Jump to content
Join the Alien Search, login or register FREE on Aliens and Space Forum
Members Can Post Anonymously On This Site

NASA’s BlueFlux Campaign Supports Blue Carbon Management in South Florida

NASA

By NASA
in NASA

 Share

Recommended Posts

  • Publishers
NASA Mentor

NASA

Posted
  • Publishers
Posted
Feature Article header

22 min read

NASA’s BlueFlux Campaign Supports Blue Carbon Management in South Florida

Blueflux Photo 1
Photo 1. A Mangrove stand lines the bank of Shark River, an Everglades distributary that carries water into the Gulf of Mexico’s Ponce De Leon Bay.
Photo credit: Nathan Marder/NASA’s Goddard Space Flight Center (GSFC)

Introduction

Along the southernmost rim of the Florida Peninsula, the arching prop roots or “knees” of red mangroves (Rhizophora mangle) line the coast – see Photo 1. Where they dip below the water’s surface, fish lay their eggs, enjoying the protection from predators that the trees provide. Among their branches, wading birds, such as the great blue heron and the roseate spoonbill establish rookeries to rear their young. The tangled matrix of roots collects organic matter and ocean-bound sediments, adding little-by-little to the coastline and shielding inland biology from the erosive force of the sea. In these ways, mangroves are equal parts products and engineers of their environment, but their ecological value extends far beyond this local sphere of influence.

Mangroves are an important carbon dioxide (CO2) sink – responsible for removing CO2 from the atmosphere with impressive efficiency. Current estimates suggest mangroves sequester CO2 10 times faster and store up to 5 times more carbon than rainforests and old-growth forests. But as part of the ever-changing line between land and sea, they’re exceptionally vulnerable to climate disturbances such as sea level rise, hurricanes, and changes in ocean salinity. As these threats intensify, Florida’s sub-tropical wetlands – and their role as a critical sink of CO2 – face an uncertain future.  

NASA’s BlueFlux Campaign, a three-year (2021–2024), $1.5-million project operating under the agency’s Carbon Monitoring System, used field, aircraft, and satellite data to study the impact of both natural and anthropogenic pressures on South Florida’s coastal ecology. BlueFlux consists of a series of ground-based and airborne fieldwork campaigns, providing a framework for the development of a satellite-based data product that will estimate daily rates of surface-atmosphere gas transfer or gaseous flux across coastal ecosystems in Florida and the Caribbean. “The goal is to enhance our understanding of how blue-carbon ecosystems fit into the global carbon market,” said Ben Poulter [NASA’s Goddard Space Flight Center (GSFC)—Project Lead]. “BlueFlux will ultimately answer scientific questions and provide policy-related solutions on the role that coastal wetlands play in reducing atmospheric greenhouse gas (GHG) concentrations.”

This article provides an overview of BlueFlux fieldwork operations – see Figure 1 – and outlines how the project might help refine global GHG budgets and support the restoration of Florida’s wetland ecology.

Blueflux Figure 1
Figure 1. A map of South Florida overlaying a true-color image captured by the Moderate Resolution Imaging Spectroradiometer (MODIS) instrument on board NASA’s Terra satellite. Red triangles mark locations of primary ground-based fieldwork operations described in this article.
Figure Credit: NASA’s Goddard Space Flight Center (GSFC)

BlueFlux Ground-based Fieldwork

Across the street from the Flamingo Visitors center, at the base of the Everglades National Park, there was once a thriving mangrove population. Now, the skeletal remains of the trees form one of the Everglades’ largest ghost forests – see Photo 2. When Hurricane Irma made landfall in September 2017, violent winds battered the shore and a storm surge swept across the coast, decimating large swaths of the mangrove forest. Most of Florida’s mangroves recovered swiftly. But seven years later, this site and others like it have seen little to no growth.

“At this point, I doubt they’ll ever recover,” said David Lagomasino [East Carolina University].

Blueflux Photo 2
Photo 2. A mangrove ghost forest is all that remains of a once-thriving mangrove stand, preserving an image of Hurricane Irma’s lasting impact on South Florida’s wetland ecology. Most of the ghost forests in the region are a product of natural depressions in the landscape that collect saltwater following severe storms.
Photo credit: Nathan Marder/NASA’s Goddard Space Flight Center (GSFC)

Lagomasino was in the Everglades this summer conducting research as part of the fifth leg of BlueFlux fieldwork – see Photo 3. His team focused on measuring how changes in wetland ecology affect the sequestration and emission rates of both CO2 and methane (CH4). In areas where vegetative health is severely degraded, like in ghost forests, a general decline in CO2 uptake is accompanied by an increase in CH4 production, the net effect of which could dramatically amplify the atmosphere’s ability to trap heat. Ghost forests offer an example at one end of an extreme, but defining the way more subtle gradients among wetland variables – such as changes in water level, tree height, canopy coverage, ocean salinity, or mangrove species distribution – might influence flux is harder to tease out of the limited data available. 

Blueflux Photo 3
Photo 3. Assistant professor David Lagomasino and Ph.D. candidate Daystar Babanawo [both from East Carolina University] explore the lower Everglades by boat. Due to the relative inaccessibility of the region, measurements of flux in wetland ecosystems are limited. The plant life here consists almost entirely of Florida’s three Mangrove species (red, black, and white), which are among the only vegetation that can withstand the brackish waters characteristic of coastal wetlands.
Photo credit: Nathan Marder/NASA’s Goddard Space Flight Center (GSFC)

In the Everglades, flux measurements are confined to a handful of eddy covariance towers – or flux towers – constructed as part of the National Science Foundation’s (NSF) Long-Term Ecological Research (LTER) Network. 

The first flux tower in this network, erected in June 2003, stands near the edge of Shark River at a research site called SRS-6, short for Shark River Slough site 6. A short walk from the riverbank, across a snaking path of rain-weathered, wooden planks, sits a small platform where the flux tower is anchored to the forest floor – see Photo 4. About 20 m (65 feet) above the platform, the tower breaches the canopy, where a suite of instruments continuously measures wind velocity, temperature, humidity, and the vertical movement of trace atmospheric gases, such as water vapor (H2Ov), CO2, and CH4. It’s these measurements collectively that are used to calculate flux. 

Blueflux Photo 4
Photo 4. At SRS-6, an eddy covariance tower measures C02 and CH4 flux among a dense grove of red, black, and white mangroves. The term eddy covariance refers to the statistical technique used to calculate gaseous flux based on the meteorological and scalar atmospheric data collected by the flux towers.
Photo credit: Nathan Marder/NASA’s Goddard Space Flight Center (GSFC)

“Hundreds of research papers have come from this site,” said Lagomasino. The abundance of research generated from the data captured at SRS-6 speaks in part to the value of the measurements that the tower makes. It also points to the gaps that exist just beyond each tower’s reach. A significant goal of the BlueFlux campaign is to explain flux on a scale that isn’t covered by existing data – to fill in the gaps between the towers.

One way to do that is by gathering data by hand.

On Lagomasino’s boat is a broad, black case carrying a tool called a Russian peat auger. The instrument is designed to extract core samples from soft soils – see Photo 5.

Everglades peat, which is made almost entirely of the partially decomposed roots, stems, and leaves of the surrounding mangroves, offers a perfect study subject. Each thin, half-cylinder sample gets sealed and shipped back to the lab, where it will be sliced into flat discs. The discs will be analyzed for their age and carbon content by Lagomasino’s team and partners at Yale University. These cores are like biomass time capsules. In Florida’s mangrove forests, a 1-m (3-ft) core might represent more than 300 years of carbon accumulation. On average, a 1 to 3 mm (0.04 to 0.12 in) layer of matter is added to the forest floor each year, building up over time like sand filling an hourglass.

Blueflux Photo 5
Photo 5. David Lagomasino holds a Russian peat auger containing a sample of Everglades peat. The primary source of the soil’s elevated carbon content – evident from its coarse, fibrous texture – is the partially decayed plant tissue of the surrounding mangroves.
Photo credit: Nathan Marder/NASA’s Goddard Space Flight Center (GSFC)

Although coastal wetlands account for less than 2% of the planet’s land-surface area, they house a disproportionate amount of blue carbon – carbon stored in marine and coastal environments. In the Everglades, the source of this immense accumulation of organic material is the quick-growing vegetation – see Photo 6.

When a CO2 molecule finds its way through one of the many small, porous openings on a mangrove leaf ­– called stomata – its next step is one of creation, where it plays a part in the miraculous transformation of inorganic matter into living tissue. Inside the leaf’s chloroplasts, energy from stored sunlight kickstarts a long chain of chemical reactions that will ultimately divide CO2 into its constituent parts. Oxygen atoms are returned to the atmosphere as the byproduct of photosynthesis, but the carbon stays behind to help build the sugar molecules that will fuel new plant growth. In short, the same carbon that once flowed through the atmosphere defines the molecular structure of all wetland vegetation. When a plant dies or a gust of wind pulls a leaf to the forest floor, this carbon-based matter finds its way into the soil, where it can stay locked in place for thousands of years thanks to a critical wetland ingredient: water.

The inundated, anoxic – an environment deficient or absent of oxygen – peat soils characteristic of wetlands host microbial populations that are uniquely adapted to their environment. In these low- to no-oxygen conditions, the prevailing microbiota consumes organic material slowly, leading to an accumulation of carbon in the soil. As wetland conditions change, the soil’s microbial balance shifts. For example, a decline in water level, which can increase the oxygen-content of the soil, produces conditions favorable to aerobic bacteria. These oxygen-breathing lifeforms consume organic matter far more rapidly than their anaerobic counterparts – and release more CO2 into the atmosphere as a result.

Water level isn’t the only environmental condition that influences rates of carbon sequestration. The soil cores collected during the campaign will be analyzed alongside records of interrelated variables such as water salinity, sea surface height, and temperature to understand not just the timescales associated with blue carbon development in mangrove forests but how and why rates of soil deposition change in response to specific environmental pressures. In many parts of the Everglades, accumulated peat can reach depths of up to 3 m (9.8 feet) – holding thousands of years’ worth of insights that would otherwise be lost to time.

Blueflux Photo 6
Photo 6. Mangroves are viviparous plants. Their propagules – or seedlings – germinate while still attached to their parent tree. Propagules that fall to the forest floor are primed to begin life as soon as they hit the ground. But even those that fall into bodies of water and are carried out to sea can float for months before finding a suitable place to lay their roots. The high growth rate of mangroves contributes to the efficiency with which mangrove forests remove CO2 from the atmosphere.
Photo credit: Nathan Marder/NASA’s Goddard Space Flight Center (GSFC)

Lola Fatoyinbo [NASA’s Goddard Space Flight Center (GSFC), Biospheric Sciences Lab] and Peter Raymond [Yale University’s School of the Environment] led additional fieldwork teams tasked with collecting forest inventory data in locations where vegetation was dead, regenerating, or recently disturbed by severe weather events. A terrestrial laser system was used to obtain three-dimensional (3D) images of mangrove forest structure, which provided maps of stem density, vertical distributions of biomass, and stand volume surface area. Spectroradiometers were also used to acquire visible, near infrared, and shortwave infrared spectra, delivering detailed information about species composition, vegetative health, water levels, and soil properties.

To tie these variables to flux, the researchers made measurements using chambers – see Figure 2 – designed to adhere neatly to points where significant rates of gas exchange occur, (i.e., mangrove lenticels—cell-sized breathing pores found on tree bark and root systems— and the forest floor). As an example, black mangroves (Avicennia germinans) possess unique aerial roots called pneumatophores that, similar to the prop roots of red mangroves, provide them with access to atmospheric oxygen. Pneumatophores sprout vertically from the forest floor and line up like matchsticks around the base of each tree. The team used cylindrical chambers to measure the transfer of gas between a single pneumatophore and the atmosphere – see Figure 2a.

These observations are archived in NASA’s Oak Ridge National Laboratory (ORNL) Distributed Active Archive Center (DAAC) and publicly available to researchers who wish to monitor and identify trends in the data. After nearly three years of field work, these data have already given scientists a more detailed picture of how Florida’s wetlands are responding to environmental pressures.

Research based on data from early BlueFlux fieldwork deployments confirms that aerobic, methanogenic microbes living in flooded, wetland soils naturally release a significant amount of CH4 as a byproduct of the process by which they create their own energy.

“We’re especially interested in this methane part,” said Fatoyinbo. “It’s the least understood, and there’s a lot more of it than we previously thought.” Fatoyinbo also noted a “significant difference in CO2 and CH4 fluxes between healthy mangroves and degraded ones.” In areas where mangrove health is in decline, due to reduced freshwater levels or as the result of damage sustained during severe weather events, “you can end up with more ‘bad’ gases in the atmosphere,” she said. Since CH4 is roughly 80 times more potent than CO2 over 100-year period, these emissions can undermine some of the net benefits that blue carbon ecosystems provide as a sink of atmospheric carbon.

Blueflux Figure 2
Figure 2. To directly measure the emission and sequestration rates of CO2 and CH4 in mangrove forests, chambers were designed to adhere to specific targets where gas exchange occurs (i.e. mangrove lenticles, root systems, and the forest floor).
Credit: GSFC

Airborne Research Teams Measure GHG Flux from Above 

Florida’s mangrove forests blanket roughly 966 km2 (600 mi2) of coastal terrain. Even with over 20 years of tower data and the extensive measurements from ground-based fieldwork operations, making comprehensive inferences about the entire ecosystem is tenuous work. To provide flux data at scale – and help quantify the atmospheric influence that Florida’s coastal wetlands carry as a whole – NASA’s BlueFlux campaign relies on a relatively new, airborne technique for measuring flux – see Photo 7.

BlueFlux Photo 7
Photo 7. At the Miami Executive Airfield, members of NASA’s BlueFlux airborne science team stand in front of the Beechcraft 200 King Air before the final flight of the fieldwork campaign.
Photo credit: Nathan Marder/NASA’s Goddard Space Flight Center (GSFC)

Between 2022 and 2024, over 5 deployments, the team conducted more than 34 carefully planned flights – see Figure 3 – collecting flux data over Florida’s wetlands by plane. Each flight is equipped with a payload known colloquially as “CARAFE,” short for the CARbon Airborne Flux Experiment, which is the airborne campaign’s primary means of data collection. “This is one of the first times an instrument like this has flown over a mangrove forest anywhere in the world,” said Fatoyinbo. “So, it’s really just kind of groundbreaking.”

Blueflux Figure 3
Figure 3. An example of flight paths from eight BlueFlux airborne deployments flown in April 2023. The flight paths are highlighted in blue. The legs of each flight where flux measurements were taken are highlighted in green. Accurate flux calculations rely on stable measurements of the aircraft’s speed and orientation, which is why the flux legs of each flight are flown in straight lines.
Credit: GSFC

In the air, GHG concentrations are measured using a well-established technique called cavity ringdown spectroscopy, which involves firing a laser into a small cavity where it will ping back and forth between two highly reflective mirrors. Most gas-phase molecules absorb light at specific wavelengths, depending on their atomic makeup. Since the target molecules in this case are CO2 and CH4, the laser is configured to emit light at a wavelength that only these molecules will absorb. As the laser bounces between the mirrors, a fraction of the light is absorbed by any molecules present in the chamber. The rate of the light’s decay is used to estimate CO2 and CH4 concentrations, generating a time series with continuous readings of gas concentrations, measured in parts per million – see Photo 8. This information is combined with measurements of vertical wind velocity to calculate a corresponding time series of fluxes along the flight track. While these measurements are important on their own, a priority for the airborne team is understanding GHG fluxes in relation to what’s happening on the ground. 

Blueflux Photo 8
Photo 8. The CARAFE payload is responsible for taking readings of atmospheric CO2, CH4, and H2Ov levels using a wind probe and two optical spectroscopy instruments manufactured by Picarro: the G2401m Gas Concentration Analyzer and the G2311f Gas Concentration Analyzer. The readings pictured above were made by the G2311f, which measures gas concentrations at a faster rate than the G2401m. The G2401m makes slower but more stable measurements, which are necessary for verifying the accuracy of measurements made by the G2311f.
Photo credit: Nathan Marder/NASA’s Goddard Space Flight Center (GSFC)

Unlike flux towers, which only collect data within a 100 m2 (328 ft2) “footprint,” airborne readings have a footprint that can stretch up to 1 km (0.6 mi) in upwind directions. The plane’s speed, position, and orientation are used to help link flux data to fixed points along the flight’s path – so the team can make comparisons between aerial measurements and those made by the ground-based towers – see Photo 9.

“One challenge with that is the flux towers are much lower to the ground, and their footprint is much smaller,” said Glenn Wolfe [GSFC—BlueFlux Flight Lead]. “So, we have to be really careful with our airborne observations, to make sure they closely resemble our ground-based measurements.”

Part of decoding the airborne data involves overlaying each footprint with detailed maps of different surface properties, such as vegetation cover, soil water depth, or leaf-area index, so the team can constrain the measurements and assign fluxes to specific sources – whether its mangroves, sawgrass, or even water. 

Blueflux Photo 9
Photo 9. The BlueFlux airborne science team collects flux measurements from 90m (300ft) above Florida’s mangrove forests.
Photo credit: Nathan Marder/NASA’s Goddard Space Flight Center (GSFC)

Data Upscaling – Making Daily Flux Predictions from Space

The coupling of BlueFlux’s ground-based and airborne data provides the framework for the production of a broader, regional image of GHG flux.

“The eddy flux towers give us information about the temporal variability,” said Cheryl Doughty [GSFC]. “And the airborne campaign gives us this great intermediate dataset that allows us to go from individual trees to a much larger area.”

Doughty is now using BlueFlux data to train a remote-sensing data product, the prototype of which is called Daily Flux Predictions for South Florida. The product’s underlying model relies on machine learning algorithms and an ensemble modeling technique called random forest regression. It will make flux predictions based on surface reflectance data captured by the Moderate Resolution Imaging Spectroradiometer (MODIS), an instrument that flies on NASA’s polar-orbiting Aqua and Terra satellites – see Figure 4.

“We’re really at the mercy of the data that’s out there,” said Doughty. “One of the things we’re trying to produce as part of this project is a daily archive of fluxes, so MODIS is an amazing resource, because it has over 20 years of data at a daily temporal resolution.”

This archival flux data will help researchers explain how fluxes change in relation to processes that are directly described by MODIS surface reflectance data, including sea-level rise, land use, water management, and disturbances from hurricanes and fires.

Blueflux Figure 4
Figure 4. Sample of methane flux upscaling, in which MODIS surface reflectance retrievals are used to predict CH4 flux for South Florida at a regional scale [bottom row, left]. The model inputs rely on a composite of MODIS Nadir Bidirectional Reflectance Distribution Function (BRDF)-Adjusted Radiance (NBAR) measurements from all available MODIS land bands: [top row, left to right]: red (620–670 nm), green (545–565 nm), blue (459–479 nm); [middle row, left to right] near infrared 1, or NIR1 (841–876 nm), NIR2 (1230–1250 nm), shortwave IR 1, or SWIR1 (1628–1652 nm), and SWIR 2 (2105–2155 nm). The Everglades National Park boundary is indicated on each image with a white line. Output of the model is shown [bottom row, left] as well as a comparison between modeled fluxes of MODIS NBAR with Terra and Aqua [bottom row, right].
Credit: GSFC

To help validate the model, researchers must reformat flux measurements from the airborne campaign to match the daily temporal resolution and 500m2 (0.3mi2) spatial resolution of MODIS reflectance retrievals.

“It’s best practice to meet the data at the coarsest resolution,” said Doughty. “So, we have to take an average of the hourly estimates to match MODIS’ daily scale.”

The matching process is slightly more complicated for spatial datasets. BlueFlux’s airborne flux measurements produce roughly 20 data points for each 500 m2 (0.3 mi2) area, the same resolution as a single MODIS pixel.

“We’re essentially taking an average of all those CARAFE points to get an estimate that corresponds to one pixel,” said Doughty.

This symmetry is critical, allowing the team to test, train, and tune the model using measurements that capture what’s really happening on the ground – ensuring the accuracy of flux measurements generated from satellite data alone.

Researchers don’t expect the model to serve as a perfect reconstruction of reality. The heterogenous nature of Florida’s wetland terrain – which consists of a patchwork of sawgrass marshland, mangrove forests, hardwood hammocks, and freshwater swamps – contributes to high degree of variability in CO2 removal rates within and across its distinct regions. The daily flux product accounts for some of this complexity by making hundreds of calculations at a time, each with slightly different parameters based on in-situ measurements.

“The goal isn’t to just give people one flux measurement but an estimate of the uncertainty that is so inherent to these wetlands,” explained Doughty.

The prototype of the product will be operational by early 2025 and accessible to the public through NASA’s ORNL­ DAAC. Doughty hopes it will help stakeholders and decision makers evaluate policies related to water management, land use, and conservation that might impact critical stocks of blue carbon. 

From Drainage to Restoration in the Florida Everglades

In the late 19th century, land developers were drawn to South Florida, where they hoped the fertile soil and tropical climate could support year-round cultivation of commodities such as exotic fruits, vegetables, and sugar cane. There was just one thing standing in the way – the water. If they could find a way to tame Florida’s wilderness, to drain the wetland of its excess water, Florida would offer Americans a new agricultural frontier.

Progress was made incrementally, but the Everglades drainage project idled for more than 50 years as its organizers wrestled with the literal and political morass surrounding South Florida’s wetland topography. It was mother nature’s hand that ultimately accelerated the drainage project. In 1926 and 1928, two large hurricanes tore through the barrier along Lake Okeechobee’s southern shore built to prevent water from spilling onto the newly settled, small-scale farmland just south of the lake. The second of the two storms – 1928’s Okeechobee Hurricane – made landfall in early September and resulted in nearly 3,000 recorded fatalities. In some areas, the torrent of flood water was deep enough that even those who sought refuge from the flood on the roofs of their homes were swept away by the current. The federal government was forced to step in.

By 1938, the U.S. Army Corps of Engineers had completed construction of the Hoover Dike, adding to a collection of four canals responsible for siphoning water away from Lake Okeechobee’s floodplain and into the Atlantic Ocean. Seasonal flooding was brought under control, but the complete reclamation of South Florida’s wetlands proved more challenging than anticipated. As water levels fell and freshly cleared lands dried out, the high organic content of the soil fueled tremendous peat and muck fires that could burn for days, spreading through underground seams where water once flowed. In some areas, fires consumed the entire topsoil layer – exposing the limestone substrata to the atmosphere for the first time in thousands of years. The engineers in charge of Florida’s early wetland reclamation projects underestimated the value of the state’s hydrological system and overestimated its capacity to withstand human interference. 

“Those initial four canals were enough to drain the everglades three times over,” said Fred Sklar [South Florida Water Management District—Everglades System Sciences Director]. “And they still exist, but now there are more than seven million people who rely on them for drinking water and flood control.”

Today, much of the Water Management District’s work involves unwinding the damage wrought by earlier drainage efforts.

“One thing we’re trying to do is make sure these peat fires never happen again,” said Sklar.

But restoring natural water flow to the Everglades ­– which is critical to the region’s ecological health – isn’t an option. Even if drainage could be reversed, it would subject Florida’s residents to the same flood risks that made drainage a priority. Some residents, including members of the Miccosukee and Seminole tribes, live directly alongside or within Everglades wilderness areas, where the risk of flooding is even greater than it is in the state’s highly populated coastal communities. These areas are also out of reach of the Water Management District’s existing infrastructure. It’s not as simple as turning the tap on and off.

Blueflux Photo 10
Photo 10. The Tamiami Trail Canal runs across the Florida Peninsula from west to east, towards a saltwater treatment facility near the Miami River. Construction was completed in 1928, shortly after the first four drainage canals opened. It quickly became apparent that the canal and its adjacent roadway dramatically impede water flow to the Everglades wilderness areas to their south, cutting off the region’s vegetation and wildlife from a critical source of freshwater. New modifications to the canal are currently underway, which aim to introduce a hydrological regime that more closely resembles the pre-drainage system.
Photo credit: U.S. National Park Service

Florida’s Water Management District works with federal agencies, including the U.S. Army Corps of Engineers, to monitor and govern the flow of Florida’s freshwater. The District has overseen the construction and management of dozens of canals, dikes, levees, dredges, and pumps over the last half-century that offer a higher degree of control over Florida’s complex hydrological network – see Photo 10.

“The goal is to restore as much acreage as we can, but we also need to restore it functionally, without degrading the whole system or putting residents at risk,” summarized Sklar. “To do this effectively, we need a detailed understanding of how the hydrology functions and how it influences all of these other systems, such as carbon sequestration.”

Since the 1920s, more than half of Florida’s original wetland coverage has been lost. The present system also carries 65% less peat coverage and 77% less stored carbon than it did prior to drainage. As atmospheric CO2 concentrations climb at unprecedented rates, an accompanying rise in sea levels, severe weather, and ocean salinity all present serious threats to Florida’s wetland ecology – see Figure 5.

“We’re worried about losing that stored carbon,” said Poulter. “But blue carbon also offers tremendous opportunities for climate mitigation if conservation and restoration are properly supported by science.”

Blueflux Figure 5
Figure 5. A map of the BlueFlux study region, showing mangrove extent (green) and the paths of tropical storms and hurricanes from 2011 to 2021 (red). These storms drive losses in mangrove forest coverage – the result of erosion and wind damage. The inset regions at the top of the image highlight proposed targets for the airborne component of NASA’s BlueFlux Campaign.
Figure credit: GSFC

Conclusion – The Future of Flux

Every few years, the Intergovernmental Panel on Climate Change (IPCC) releases emissions data and budget reports that have important policy implications related to the Paris Agreement’s goal of limiting global warming to between 1.5°C (2.7°F) and 2°C (3.6°F) compared to pre-industrial levels. Refining the accuracy of global carbon budgets is paramount to reaching that goal, and wetland ecosystems – which have been historically under-represented in climate research – are an important part of the equation.

Early estimates based on BlueFlux fieldwork deployments and upscaled using MODIS surface reflectance data suggest that wetland CH4 emissions in South Florida offset CO2 removal in the region by about 5% based on a 100-year CH4 warming potential, resulting in a net annual CO2 removal of 31.8 Tg (3.18 million metric tons) per year. This is a small fraction of total CO2 emissions in the U.S. and an even smaller fraction of global emissions. In 2023, an estimated 34,800 Tg (34.8 billion metric tons) of CO2 were released into the atmosphere. But relative to their size, the CO2 removal services provided by tropical wetlands are hardly dismissible.

“We’re finding that massive amounts of CO2 are removed and substantial amounts of CH4 are produced, but overall, these ecosystems provide a net climate benefit by removing more greenhouse gases than they produce,” Poulter said.

Access to a daily satellite data product also provides researchers with the means to make more regular adjustments to budgets based on how Florida’s mutable landscape is responding to climate disturbances and restoration efforts in real time.

With the right resources in hand, the scientists who dedicate their careers to understanding and restoring South Florida’s ecology share a hopeful outlook.

“Nature and people can absolutely coexist,” said Meenakshi Chabba [The Everglades Foundation—Ecologist and Resilience Scientist]. “But what we need is good science and good management to reach that goal.”

The Everglades Foundation provides scientific evaluation and guidance to the elected officials and governmental institutions responsible for the implementation of the Comprehensive Everglades Restoration Plan (CERP), a federal program approved by Congress in 2000 that outlines a 30-year plan to restore Florida’s wetland ecology. The Foundation sees NASA’s BlueFlux campaign as an important accompaniment to that goal.

“The [Daily Flux Predictions for South Florida] data product is incredibly valuable, because it provides us with an indicator of the health of the whole system,” said Steve Davis [The Everglades Foundation—Chief Science Officer]. “We know how valuable the wetlands are, but we need this reliable science from NASA and the BlueFlux Campaign to help translate those benefits into something we can use to reach people as well as policymakers.”

Researchers hope the product can inform decisions about the management of Florida’s wetlands, the preservation of which is not only a necessity but – to many – a responsibility.

“These impacts are of our own doing,” added Chabba. “So, now it’s incumbent upon us to make these changes and correct the mistakes of the past.”

Next, the BlueFlux team is shifting their focus to what they call BlueFlux 2. This stage of the project centers around further analysis of the data collected during fieldwork campaigns and outlines the deployment of the beta version of Daily BlueFlux Predictions for South Florida, which will help generate a more accurate evaluation of flux for the many wetland ecosystems that exist beyond Florida’s borders.

“We’re trying to contribute to a better understanding of global carbon markets and inspire further and more ambitious investments in these critical stocks of blue carbon,” said Poulter. “First, we want to scale this work to the Caribbean, where we have these great maps of mangrove distribution but limited data on flux.”

An additional BlueFlux fieldwork deployment is slated for 2026, with plans to make flux measurements above sites targeted by the state for upcoming restoration initiatives, such as the Everglades Agricultural Area Environmental Protection District. In the Agricultural Area, construction is underway on a series of reservoirs that will store excess water during wet seasons and provide a reserve source of water for wildlife and residents during dry seasons. As the landscape evolves, BlueFlux will help local officials evaluate how Florida’s wetlands are responding to efforts designed to protect the state’s most precious natural resource – and all those who depend on it. 

Nathan Marder
NASA’s Goddard Space Flight Center/Global Science and Technology Inc.
nathan.marder@nasa.gov

Share

Details

Last Updated
Nov 12, 2024

Related Terms

View the full article

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
 Share
Go to topic listing

  • Similar Topics

    • NASA
      NASA Cameras to Capture Interaction Between Blue Ghost, Moon’s Surface
      By NASA
      4 min read
      Preparations for Next Moonwalk Simulations Underway (and Underwater)
      The six SCALPSS cameras mounted around the base of Blue Ghost will collect imagery during and after descent and touchdown. Using a technique called stereo photogrammetry, researchers at Langley will use the overlapping images to produce a 3D view of the surface. Image courtesy of Firefly. Say cheese again, Moon. We’re coming in for another close-up.
      For the second time in less than a year, a NASA technology designed to collect data on the interaction between a Moon lander’s rocket plume and the lunar surface is set to make the long journey to Earth’s nearest celestial neighbor for the benefit of humanity.
      Developed at NASA’s Langley Research Center in Hampton, Virginia, Stereo Cameras for Lunar Plume-Surface Studies (SCALPSS) is an array of cameras placed around the base of a lunar lander to collect imagery during and after descent and touchdown. Using a technique called stereo photogrammetry, researchers at Langley will use the overlapping images from the version of SCALPSS on Firefly’s Blue Ghost — SCALPSS 1.1 — to produce a 3D view of the surface. An earlier version, SCALPSS 1.0, was on Intuitive Machines’ Odysseus spacecraft that landed on the Moon last February. Due to mission contingencies that arose during the landing, SCALPSS 1.0 was unable to collect imagery of the plume-surface interaction. The team was, however, able to operate the payload in transit and on the lunar surface following landing, which gives them confidence in the hardware for 1.1.
      The SCALPSS 1.1 payload has two additional cameras — six total, compared to the four on SCALPSS 1.0 — and will begin taking images at a higher altitude, prior to the expected onset of plume-surface interaction, to provide a more accurate before-and-after comparison.
      These images of the Moon’s surface won’t just be a technological novelty. As trips to the Moon increase and the number of payloads touching down in proximity to one another grows, scientists and engineers need to be able to accurately predict the effects of landings.
      How much will the surface change? As a lander comes down, what happens to the lunar soil, or regolith, it ejects? With limited data collected during descent and landing to date, SCALPSS will be the first dedicated instrument to measure the effects of plume-surface interaction on the Moon in real time and help to answer these questions.
      “If we’re placing things – landers, habitats, etc. – near each other, we could be sand blasting what’s next to us, so that’s going to drive requirements on protecting those other assets on the surface, which could add mass, and that mass ripples through the architecture,” said Michelle Munk, principal investigator for SCALPSS and acting chief architect for NASA’s Space Technology Mission Directorate at NASA Headquarters in Washington. “It’s all part of an integrated engineering problem.”
      Under the Artemis campaign, the agency’s current lunar exploration approach, NASA is collaborating with commercial and international partners to establish the first long-term presence on the Moon. On this CLPS (Commercial Lunar Payload Services) initiative delivery carrying over 200 pounds of NASA science experiments and technology demonstrations, SCALPSS 1.1 will begin capturing imagery from before the time the lander’s plume begins interacting with the surface until after the landing is complete.
      The final images will be gathered on a small onboard data storage unit before being sent to the lander for downlink back to Earth. The team will likely need at least a couple of months to
      process the images, verify the data, and generate the 3D digital elevation maps of the surface. The expected lander-induced erosion they reveal probably won’t be very deep — not this time, anyway.
      One of the SCALPSS cameras is visible here mounted to the Blue Ghost lander.Image courtesy of Firefly. “Even if you look at the old Apollo images — and the Apollo crewed landers were larger than these new robotic landers — you have to look really closely to see where the erosion took place,” said Rob Maddock, SCALPSS project manager at Langley. “We’re anticipating something on the order of centimeters deep — maybe an inch. It really depends on the landing site and how deep the regolith is and where the bedrock is.”
      But this is a chance for researchers to see how well SCALPSS will work as the U.S. advances human landing systems as part of NASA’s plans to explore more of the lunar surface.
      “Those are going to be much larger than even Apollo. Those are large engines, and they could conceivably dig some good-sized holes,” said Maddock. “So that’s what we’re doing. We’re collecting data we can use to validate the models that are predicting what will happen.”
      The SCALPSS 1.1 project is funded by the Space Technology Mission Directorate’s Game Changing Development Program.
      NASA is working with several American companies to deliver science and technology to the lunar surface under the CLPS initiative. Through this opportunity, various companies from a select group of vendors bid on delivering payloads for NASA including everything from payload integration and operations, to launching from Earth and landing on the surface of the Moon.

      Share
      Details
      Last Updated Dec 19, 2024 EditorAngelique HerringLocationNASA Langley Research Center Related Terms
      General Explore More
      4 min read Statistical Analysis Using Random Forest Algorithm Provides Key Insights into Parachute Energy Modulator System
      Article 6 hours ago 1 min read Program Manager at NASA Glenn Earns AIAA Sustained Service Award 
      Article 8 hours ago 2 min read An Evening With the Stars: 10 Years and Counting 
      Article 8 hours ago Keep Exploring Discover Related Topics
      Missions
      Humans in Space
      Climate Change
      Solar System
      View the full article
    • NASA
      Uncrewed Aircraft Systems Traffic Management Beyond Visual Line of Sight (UTM BVLOS) 
      By NASA
      NASA, along with members of the FAA and commercial drone engineers, gathered in the Dallas area May 25, 2024, to view multiple delivery drones operating in a shared airspace beyond visual line of sight using an industry-developed, NASA-originated uncrewed aircraft system traffic management system.NASA NASA’s Uncrewed Aircraft Systems Traffic Management Beyond Visual Line of Sight (UTM BVLOS) subproject aims to support the growing demand for drone flights across the globe.  
      Uncrewed aircraft systems (UAS), or drones, offer an increasing number of services, from package delivery to critical public safety operations, like search and rescue missions. However, without special waivers, these flights are currently limited to visual line of sight – or only as far as the pilot can see – which is roughly no farther than one mile from the operator. As the FAA works to authorize flights beyond this point, NASA is working with industry and the Federal Aviation Administration (FAA) to operationalize an uncrewed traffic management system for these operations.  
      NASA’s UTM Legacy  
      NASA’s Uncrewed Aircraft Systems Traffic Management, or UTM, was first developed at NASA’s Ames Research Center in California’s Silicon Valley in 2013, and enables drones to safely and efficiently integrate into air traffic that is already flying in low-altitude airspace. UTM is based on digital sharing of each user’s planned flight details, ensuring each user has the same situational awareness of the airspace. 
      NASA performed a series of drone flight demonstrations using UTM concepts in rural areas and densely populated cities under the agency’s previous UTM project . And commercial drone companies have since utilized NASA’s UTM concepts and delivery operations in limited areas.  
      Several projects supporting NASA’s Advanced Air Mobility or AAM mission are working on different elements to help make AAM a reality and one of these research areas is automation.NASA / Graphics UTM Today 
      NASA research is a driving force in making routine drone deliveries a reality. The agency is supporting a series of commercial drone package deliveries beyond visual line of sight, some of which kicked off in August 2024 in Dallas, Texas. Commercial operators are using NASA’s UTM-based capabilities during these flights to share data and planned flight routes with other operators in the airspace, detect and avoid hazards, and maintain situational awareness. All of these capabilities allow operators to safely execute their operations in a shared airspace below 400 feet and away from crewed aircraft. These drone operations in Dallas are a collaboration between NASA, the FAA, industry drone operators, public safety operators, and others. 
      These initial flights will help validate UTM capabilities through successful flight operation evaluations and inform the FAA’s rulemaking for safely expanding drone operations beyond visual line of sight. 
      The agency will continue to work with industry and government partners on more complex drone operations in communities across the country. NASA is also working with partners to leverage UTM for other emerging operations, including remotely piloted air cargo delivery and air taxi flights. UTM infrastructure could also support high-altitude operations for expanded scientific research, improved disaster response, and more. 
      NASA UTM BVLOS 
      NASA’s UTM Beyond Visual Line of Site (UTM BVLOS) subproject is leading this effort, under the Air Traffic Management eXploration portfolio within the agency’s Aeronautics Research Mission Directorate. This work is in support of NASA’s Advanced Air Mobility Mission, which seeks to transform our communities by bringing the movement of people and goods off the ground, on demand, and into the sky.
      Keep Exploring Discover More Topics From NASA
      Missions
      Humans in Space
      Climate Change
      Solar System
      View the full article
    • NASA
      2024 Be An Astronaut Campaign
      By NASA
      7 Min Read 2024 Be An Astronaut Campaign
      NASA astronaut Andrew Morgan tethered to the International Space Station during a spacewalk. Credits: NASA NASA astronauts have been traveling to space for more than six decades and living there continuously since 2000. Now, NASA’s Artemis program is preparing to land the first woman and the next man on the Moon. As NASA continues to expand human exploration in our solar system, we will need more than the currently active astronauts to crew spacecraft bound for deep-space destinations.

      Every four years, NASA opens its doors and welcomes thousands of applicants to join a new class of astronauts that will push human spaceflight to new depths. Astronaut applications opened March 5, 2024, and closed April 16, 2024. In those 42 days, NASA’s 2024 Be An Astronaut Campaign used various platforms to promote the beauty of human spaceflight, explore opportunities to reach untapped and underserved audiences, encourage the younger generations to follow their dreams and pursue a career as an astronaut, and inspire the world about the capabilities we have as humans to explore farther than we ever have before.

      Official “Be a NASA Astronaut” Video

      To kick off the astronaut recruitment campaign, NASA, NASA Johnson, NASA Artemis, and NASA Astronauts accounts collaborated on a video narrated by Morgan Freeman on Instagram reaching over 9.7 million views. This video, seen below, was shared across agency social media platforms, YouTube, and digital sites to introduce the start of the astronaut application period.

      The Universe is Calling: Apply to Be a NASA Astronaut, official NASA astronaut recruitment video featuring a voice over by Morgan Freeman. "Spaceflight is just one part of it. You are a team member before you are any thing in this role."
      April Jordan
      Manager of NASA Astronaut Selection

      Throughout the campaign, #BeAnAstronaut was utilized to increase campaign awareness and engagement. This hashtag was used by 36 agency accounts and totaled 167 posts across the agency. With over 15,000 social media mentions, 256,655 total page views throughout the campaign, and news presence on the Today Show, TIME Magazine, Yahoo News, The New York Times, and more, the Be An Astronaut campaign was a successful and exciting project that inspired aspiring astronauts to follow their dreams.

      2024 Astronaut Graduation

      On March 5, 2024, not only did astronaut applications open, but the 2021 class of NASA astronaut candidates graduated, officially making them astronauts and eligible for spaceflight. These newly graduated astronauts created a superlative to demonstrate just how NASA’s astronaut corps works as a team and family as they passed the torch down to NASA’s next class of astronauts.

      The 2024 astronaut graduating class gives you an insider’s look at not only the who’s who of their graduating class, but it allows you to get a glimpse of the accomplished astronauts’ personalities. To see them together as a group, connecting through laughter helps to illustrate how much they value team care. These classic superlatives give the scoop on which astronaut is the best dancer, the funniest, and more. Enjoy seeing a lighter side of “The Flies” in this fun and upbeat montage of the 2024 astronaut graduating class.
      Astronaut Candidate Countdown

      Our astronaut graduation countdown campaign celebrated the most recent graduating class of astronauts. The previous class completed two years of rigorous training at Johnson Space Center before they officially gained their wings. This campaign not only highlighted their achievements, but hopefully inspired potential candidates by showcasing the journey from trainee to astronaut. During the graduation ceremony, applications for the next astronaut class were announced, continuing the legacy of excellence and exploration.

      NASA astronaut Luke Delaney poses for the Astronaut Graduation Countdown.Credit: NASA NASA astronaut Jessica Wittner poses for the Astronaut Graduation Countdown.Credit: NASA NASA astronaut Jack Hathaway poses for the Astronaut Graduation Countdown.Credit: NASA NASA astronaut Andre Douglas poses for the Astronaut Graduation Countdown.Credit: NASA NASA astronaut Nichole Ayers poses for the Astronaut Graduation Countdown.Credit: NASA NASA astronaut Marcos Berrios poses for the Astronaut Graduation Countdown.Credit: NASA Mohammed Bin Rashid Space Center astronaut Nora AlMatrooshi poses for the Astronaut Graduation Countdown.Credit: NASA NASA astronaut Anil Menon poses for the Astronaut Graduation Countdown.Credit: NASA NASA astronaut Deniz Burnham poses for the Astronaut Graduation Countdown.Credit: NASA Mohammed Bin Rashid Space Center astronaut Mohammed AlMulla poses for the Astronaut Graduation Countdown.Credit: NASA NASA astronaut Christina Birch poses for the Astronaut Graduation Countdown.Credit: NASA NASA astronaut Christopher Williams poses for the Astronaut Graduation Countdown.Credit: NASA
      NASA Tumblr Thread

      For many people, human spaceflight has been a part of their lives for decades. After years of exploring, hundreds of astronauts have shared their unique experiences with the world and inspired many to want to follow in their footsteps. With over 100 thousand impressions on Tumblr, NASA posted a unique thread on “5 Myths About Becoming an Astronaut”.


      https://www.tumblr.com/nasa/132538793869/5-myths-about-becoming-an-astronaut NASA’s Tumblr thread on “5 Myths About Becoming an Astronaut”. Credit: NASA

      STEM Pinterest Pin

      Reaching various audiences of all ages, backgrounds, demographics, and experiences was key during the Be An Astronaut Campaign. Not only was it important for this campaign to reach qualifying applicants, but it was just as important to reach the aspiring astronauts of the younger generation.

      NASA posted on Pinterest 10 ways students can kick-start their space journeys within NASA’s Office of STEM Engagement, or OSTEM. Through this post, NASA was able to reach over 40 thousand students and share ways to get involved with NASA’s missions.

      A NASA astronaut during a spacewalk outside the International Space Station with the text, “10 Ways Students Can Prepare to #BeAnAstronaut”Credit: NASA "[NASA’s] decisions have led us to having an astronaut office that looks very much like America. You could reach in and grab any four people, and they would look like our crew.”
      Victor glover
      NASA Astronaut, Artemis II Pilot

      NASA @ SXSW

      A graphic of the International Space Station with the text, “Live from Space at SXSW: NASA Astronauts and Your Work in Orbit”.Credit: NASA NASA astronauts Jeanette Epps and Loral O’Hara joined NASA experts at the South by Southwest conference in Austin, Texas live from space on March 12, 2024. The astronauts joined a panel from aboard the International Space Station to discuss what it’s like to be an astronaut, how people can get involved with space station research and technology, and how to apply to become an astronaut.
      Read More
      Kristin Fabre, Jennifer Buchli, Leah Cheshier, Loral O’Hara & Jeanette Epps at Featured Session: Live from Space: NASA Astronauts & Your Work in Orbit as part of SXSW 2024 Conference and Festivals held at the Austin Convention Center on March 12, 2024 in Austin, Texas. Credit: Stephen Olker/SXSW Conference & Festivals via Getty Images)
      Vice President Encourages Applicants

      Vice President Kamala Harris quoted NASA on X to encourage people to apply to become an astronaut reaching more than 885 thousand users on the social media platform.

      Vice President Kamala Harris’ post on X stating, “As Chair of the National Space Council, I am honored to witness our astronauts’ skill and determination first-hand. There is no typical path for an astronaut, and the next class of NASA astronauts will continue to lead the world in space exploration.”.
      Astronaut Reddit AMA

      Our Astronaut Recruitment Reddit AMA on March 20th was the top post on Reddit with 25 million subscribers, and stayed pinned to the top of the subreddit for several days. NASA astronauts Shannon Walker, Jessica Watkins, and Luke Delaney discussed what it takes to be an astronaut as well as personal insights into their journey. 


      Merriam-Webster Word of the Day: Astronaut

      NASA astronaut and member of the recently graduated 2021 class of NASA astronauts, Deniz Burnham, participated in the “Word of the Day” series with Merriam-Webster defining the word ‘astronaut’. Just weeks after officially becoming an astronaut, Deniz’s video was featured on Merriam-Webster’s website and social media platforms.

      NASA astronaut Deniz Burnham featured in Merriam-Webster’s word of the day video defining the word “astronaut”.
      Houston, We Have a Podcast

      On NASA’s top-rated podcast, “Houston We Have a Podcast,” our astronaut recruitment episode garnered over 4,000 plays on Apple Podcasts and more than 1,000 plays on Spotify. In this episode, the manager of NASA astronaut selection discussed the selection process and how to apply for an out-of-this-world career.

      A lone spacesuit can be seen in the middle of the image, as a black shadow of the helmet reflects three question marks.Credit: NASA United States Army Astronaut Recruitment Video

      NASA astronaut and U.S. Army Col. Anne McClain discussed her experience as an astronaut and how other members of the U.S. Army can apply to become an astronaut and travel to space like her. This video was posted on the U.S. Army’s social media as well as posted to YouTube reaching thousands of supporters in and of the military.

      Col. Anne McClain, commander of the U.S. Army NASA detachment, shares information on eligibility as well as where and when to apply to become a NASA astronaut like herself. Credit: U.S. Army Read More
      Become An Astronaut Webpage

      NASA’s ‘Become An Astronaut’ webpage drove 246,655 viewers to the page throughout the duration of the recruitment campaign from internal and external collaborations across various digital platforms and events. Listing job requirements, frequently asked questions, and how to apply, the webpage consisted of 87.1% new visitors to the site and had almost 28 thousand referrals from Instagram.

      NASA’s ‘Become An Astronaut’ webpage.Credit: NASA Read More
      The 2024 Be An Astronaut Campaign ranged from March 5, 2024 to April 16, 2024 and successfully integrated various platforms, outreach opportunities, and educational resources into the recruitment of our next class of astronauts.

      With over 15 thousand social media mentions, 2 thousand news outlet mentions, $4.6 million in publicity value, a 91% positive sentiment, and 195 countries involved in the conversation, the campaign was able to inspire NASA’s future space explorers and push the agency closer to returning to the Moon and going to Mars.
      Share
      Details
      Last Updated Dec 09, 2024 Related Terms
      Becoming an Astronaut Astronauts General Humans in Space Why Go To Space Explore More
      3 min read Protected: Space Station Trajectory Data
      There is no excerpt because this is a protected post.
      Article 4 days ago 2 min read Protected: How do I Spot The Station?
      Article 4 days ago 11 min read Protected: Spot the Station Frequently Asked Questions
      Article 4 days ago Keep Exploring Discover More Topics From NASA
      Missions
      Humans in Space
      Climate Change
      Solar System
      View the full article
    • NASA
      Orange Lava, Blue Lagoon
      By NASA
      NASA/Michala Garrison, using Landsat data from the U.S. Geological Survey and VIIRS day-night band data from the Suomi National Polar-orbiting Partnership Lava encroaches on the Blue Lagoon, a popular tourist destination in Iceland, in this Nov. 24, 2024, Landsat 9 image overlaid with an infrared signal. The infrared signal helps distinguish the lava’s heat signature.
      A volcanic fissure burst open on Iceland’s Reykjanes peninsula four days prior, heralded by a series of earthquakes. A plume of gas, consisting primarily of sulfur dioxide, streamed from the lava. The Reykjanes peninsula eruption is the seventh in a series of events that began in December 2023.
      Image credit: NASA/Michala Garrison, using Landsat data from the U.S. Geological Survey and VIIRS day-night band data from the Suomi National Polar-orbiting Partnership
      View the full article
    • NASA
      FAQ: NASA’s Artemis Campaign and Recent Updates
      By NASA
      On flight day 13, Orion reached its maximum distance from Earth during the Artemis I mission when it was 268,563 miles away from our home planet. Orion has now traveled farther than any other spacecraft built for humans.NASA The Artemis II test flight will be NASA’s first mission with crew under the Artemis campaign and will pave the way to land astronauts on the Moon on Artemis III and future missions. The crew of four aboard the agency’s Orion spacecraft will travel around the Moon and back to confirm the spacecraft’s systems operate as designed with crew aboard in the actual environment of deep space. Through Artemis, NASA will send astronauts – including the first woman, first person of color, and its first international partner astronaut – to explore the Moon for scientific discovery, economic benefits, and to build the foundation for crewed missions to Mars.
      On Dec. 5, NASA updated its timelines for the missions and shared the results of an investigation into the Orion heat shield after it experienced an unexpected loss of charred material during re-entry of the Artemis I uncrewed test flight in late 2022.
      Here are some frequently asked questions about Artemis II, NASA’s recent updates, and the agency’s path to the Moon and Mars.
      What is Orion?
      NASA’s Orion spacecraft is where our crew live while traveling to and from deep space. Orion is built to take humans farther than they’ve ever gone before. On Artemis missions, Orion will carry crews of four astronauts from Earth to space, provide emergency abort capability, sustain them as they venture to the Moon, and safely return them to Earth from deep space speeds and temperatures.
      What is a heat shield and why is it important?
      When Orion travels back from deep space, its journey through Earth’s atmosphere generates intense temperatures of up to 5,000 degrees Fahrenheit on parts of the spacecraft. The 16-foot diameter protective heat shield on the bottom of the capsule is designed to dissipate that heat and keep the crew inside safe. Orion’s heat shield is primarily composed of Avcoat, a material designed to wear away as it heats up.
      What abnormal behavior did you see on the Artemis I heat shield?
      NASA flew the uncrewed Artemis I mission in late 2022 to test Orion, the agency’s SLS rocket, and the ground systems needed to launch them, testing these elements together for the first time to ensure engineers understand everything about the systems before flights with astronauts. The successful test flight sent Orion past the Moon and provided valuable data to ensure our deep space spacecraft and other systems are ready for crewed missions. When Orion returned to Earth, engineers saw variations across Orion’s heat shield they did not expect. Some of the charred material had broken off. If a crew had been aboard the flight, they would have remained safe, but understanding the phenomenon has been the subject of an extensive investigation since the test flight.
      What did NASA’s find as the cause of the issue?
      Engineers determined that as Orion was returning from its uncrewed mission around the Moon, gases generated inside the heat shield’s ablative outer material called Avcoat were not able to vent and dissipate as expected. This allowed pressure to build up and horizontal cracking to occur near the surface of the charred layer, causing some charred material to break off in several locations.
      For Artemis II, engineers will limit how long Orion spends in the temperature range in which the Artemis I heat shield phenomenon occurred by modifying how far Orion can fly between when it enters Earth atmosphere and lands. Engineers already are assembling and integrating the Orion spacecraft for Artemis III based on lessons learned from Artemis I and implementing enhancements to how heat shields for crewed returns from lunar landing missions are manufactured to achieve uniformity and consistent permeability. A more detailed description is here.
      Why did NASA decide to use the current heat shield?
      Extensive data from the investigation has given engineers confidence the heat shield for Artemis II can be used to safely fly the mission’s crew around the Moon and back. NASA will modify the trajectory by shortening how far Orion can fly between when it enters Earth’s atmosphere and splashes down in the Pacific Ocean. This will limit how long Orion spends in the temperature range in which the Artemis I heat shield phenomenon occurred. The heat shield for the test flight is already attached to Orion.
      When will Artemis II take place?
      The Artemis II test flight will be NASA’s first mission with crew aboard the SLS (Space Launch System) rocket and Orion spacecraft and will pave the way to land astronauts on the Moon on Artemis III. Artemis II builds on the success of the uncrewed Artemis I mission and will demonstrate a broad range of capabilities needed on lunar missions. The 10-day flight will help to confirm all of the spacecraft’s systems operate as designed with crew aboard in the actual environment of deep space. The mission is targeted for April 2026.
      The updated timeline for the Artemis II flight is informed by technical issues engineers are troubleshooting including with an Orion battery issue and its environmental control system. The heat shield was installed in June 2023 and the root cause investigation took place in parallel to other assembly and testing activities to preserve as much schedule as possible.
      What are the astronauts doing during the mission delay?
      NASA astronauts Reid Wiseman, Victor Glover, Christina Koch, and Canadian Space Agency (CSA) astronaut Jeremy Hansen will continue training for the mission. More intensive training will begin about six months before launch.
      About the Artemis Campaign
      What is Artemis?
      NASA is establishing a long-term presence at the Moon for scientific exploration and discovery with our commercial and international partners, learning how to live and work far from home, and preparing for future human exploration of Mars – we call this endeavor Artemis. Under Artemis, NASA will land the first woman, first person of color, and first international partner astronaut on the Moon, using innovative technologies to explore more of the lunar surface than ever before.
      Why is NASA going back to the Moon?
      NASA is going back to the Moon for scientific discovery, economic benefits, and inspiration for a new generation of explorers: the Artemis Generation. Artemis is a new approach to America’s space exploration efforts — it is the most technically challenging, collaborative, international endeavor humanity has ever set out to do. What we learn from expanding scientific knowledge and developing new technologies will be applied to improve life on Earth. Samples from the lunar South Pole could tell us more about the formation of our planet and origins of our solar system. We are meeting this challenge by investing in American ingenuity and leadership to advance our understanding of the universe for the benefit of all.
      What makes Artemis different from Apollo?
      The Apollo Program successfully landed 12 men near the equator of the Moon in the 1960s and 1970s. Under Artemis, NASA is going to the lunar South Pole region, where no humans have ever set foot, in new ways with commercial and international partners. The agency is leading the largest international coalition in space to push humanity farther than ever before for the benefit of all, developing capabilities for astronauts to live and work on the Moon before our next giant leap – human exploration of Mars.
      What happens after Artemis II?
      Artemis III will build on the crewed Artemis II flight test, adding new capabilities with the human landing system and advanced spacesuits to send the first humans to explore the lunar South Pole region. Over the course of about 30 days a crew of four will launch atop the Space Launch System rocket in Orion and travel to a special lunar orbit where they will dock with SpaceX’s Starship human landing system. Two Artemis crew members will transfer from Orion to Starship and descend to the lunar surface. There, they will collect samples, perform science experiments, and observe the Moon’s environment before returning in Starship to Orion waiting in lunar orbit. The mission is planned for mid-2027.
      NASA is also working with SpaceX to further develop the company’s Starship lander requirements for Artemis IV. These requirements include landing more mass on the Moon and docking with the agency’s Gateway lunar space station for crew transfer. NASA will use Blue Origin’s human landing system for Artemis V.
      View the full article

  • Check out these Videos

×
×
  • Create New...