Members Can Post Anonymously On This Site
Methane emissions detected over offshore platform in the Gulf of Mexico
-
Similar Topics
-
By European Space Agency
According to recent research, Europe’s net greenhouse gas emissions have decreased by around 25% since the 1990s. While this is good news, the study also revealed a weakening in the capacity of land and vegetation to absorb and store atmospheric carbon.
View the full article
-
By NASA
5 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
Data from one of the two CubeSats that comprise NASA’s PREFIRE mission was used to make this data visualization showing brightness temperature — the intensity of infrared emissions — over Greenland. Red represents more intense emissions; blue indicates lower intensities. The data was captured in July.
NASA’s Scientific Visualization Studio The PREFIRE mission will help develop a more detailed understanding of how much heat the Arctic and Antarctica radiate into space and how this influences global climate.
NASA’s newest climate mission has started collecting data on the amount of heat in the form of far-infrared radiation that the Arctic and Antarctic environments emit to space. These measurements by the Polar Radiant Energy in the Far-Infrared Experiment (PREFIRE) are key to better predicting how climate change will affect Earth’s ice, seas, and weather — information that will help humanity better prepare for a changing world.
One of PREFIRE’s two shoebox-size cube satellites, or CubeSats, launched on May 25 from New Zealand, followed by its twin on June 5. The first CubeSat started sending back science data on July 1. The second CubeSat began collecting science data on July 25, and the mission will release the data after an issue with the GPS system on this CubeSat is resolved.
The PREFIRE mission will help researchers gain a clearer understanding of when and where the Arctic and Antarctica emit far-infrared radiation (wavelengths greater than 15 micrometers) to space. This includes how atmospheric water vapor and clouds influence the amount of heat that escapes Earth. Since clouds and water vapor can trap far-infrared radiation near Earth’s surface, they can increase global temperatures as part of a process known as the greenhouse effect. This is where gases in Earth’s atmosphere — such as carbon dioxide, methane, and water vapor — act as insulators, preventing heat emitted by the planet from escaping to space.
“We are constantly looking for new ways to observe the planet and fill in critical gaps in our knowledge. With CubeSats like PREFIRE, we are doing both,” said Karen St. Germain, director of the Earth Science Division at NASA Headquarters in Washington. “The mission, part of our competitively-selected Earth Venture program, is a great example of the innovative science we can achieve through collaboration with university and industry partners.”
Earth absorbs much of the Sun’s energy in the tropics; weather and ocean currents transport that heat toward the Arctic and Antarctica, which receive much less sunlight. The polar environment — including ice, snow, and clouds — emits a lot of that heat into space, much of which is in the form of far-infrared radiation. But those emissions have never been systematically measured, which is where PREFIRE comes in.
“It’s so exciting to see the data coming in,” said Tristan L’Ecuyer, PREFIRE’s principal investigator and a climate scientist at the University of Wisconsin, Madison. “With the addition of the far-infrared measurements from PREFIRE, we’re seeing for the first time the full energy spectrum that Earth radiates into space, which is critical to understanding climate change.”
This visualization of PREFIRE data (above) shows brightness temperatures — or the intensity of radiation emitted from Earth at several wavelengths, including the far-infrared. Yellow and red indicate more intense emissions originating from Earth’s surface, while blue and green represent lower emission intensities coinciding with colder areas on the surface or in the atmosphere.
The visualization starts by showing data on mid-infrared emissions (wavelengths between 4 to 15 micrometers) taken in early July during several polar orbits by the first CubeSat to launch. It then zooms in on two passes over Greenland. The orbital tracks expand vertically to show how far-infrared emissions vary through the atmosphere. The visualization ends by focusing on an area where the two passes intersect, showing how the intensity of far-infrared emissions changed over the nine hours between these two orbits.
The two PREFIRE CubeSats are in asynchronous, near-polar orbits, which means they pass over the same spots in the Arctic and Antarctic within hours of each other, collecting the same kind of data. This gives researchers a time series of measurements that they can use to study relatively short-lived phenomena like ice sheet melting or cloud formation and how they affect far-infrared emissions over time.
More About PREFIRE
The PREFIRE mission was jointly developed by NASA and the University of Wisconsin-Madison. A division of Caltech in Pasadena, California, NASA’s Jet Propulsion Laboratory manages the mission for NASA’s Science Mission Directorate and provided the spectrometers. Blue Canyon Technologies built and now operates the CubeSats, and the University of Wisconsin-Madison is processing and analyzing the data collected by the instruments.
To learn more about PREFIRE, visit:
https://science.nasa.gov/mission/prefire/
5 Things to Know About NASA’s Tiny Twin Polar Satellites Twin NASA Satellites Ready to Help Gauge Earth’s Energy Balance News Media Contacts
Jane J. Lee / Andrew Wang
Jet Propulsion Laboratory, Pasadena, Calif.
818-354-0307 / 626-379-6874
jane.j.lee@jpl.nasa.gov / andrew.wang@jpl.nasa.gov
2024-116
Share
Details
Last Updated Sep 03, 2024 Related Terms
PREFIRE (Polar Radiant Energy in the Far-InfraRed Experiment) Climate Change Earth Earth Science Polar Explore More
2 min read NASA Earth Science Education Collaborative Member Co-Authors Award-Winning Paper in Insects
On August 13, 2024, the publishers of the journal Insects notified authors of three papers…
Article 4 hours ago 5 min read NASA JPL Developing Underwater Robots to Venture Deep Below Polar Ice
Article 5 days ago 7 min read NASA Project in Puerto Rico Trains Students in Marine Biology
Article 6 days ago Keep Exploring Discover Related Topics
Missions
Humans in Space
Climate Change
Solar System
View the full article
-
By NASA
4 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
An astronaut aboard the International Space Station photographed wildfire smoke from Nova Scotia billowing over the Atlantic Ocean in May 2023. Warm weather and lack of rain fueled blazes across Canada last year, burning 5% of the country’s forests.NASA Extreme wildfires like these will continue to have a large impact on global climate.
Stoked by Canada’s warmest and driest conditions in decades, extreme forest fires in 2023 released about 640 million metric tons of carbon, NASA scientists have found. That’s comparable in magnitude to the annual fossil fuel emissions of a large industrialized nation. NASA funded the study as part of its ongoing mission to understand our changing planet.
The research team used satellite observations and advanced computing to quantify the carbon emissions of the fires, which burned an area roughly the size of North Dakota from May to September 2023. The new study, published on Aug. 28 in the journal Nature, was led by scientists at NASA’s Jet Propulsion Laboratory in Southern California.
To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video
Carbon monoxide from Canada wildfires curls thousands of miles across North America in this animation showing data from summer 2023. Lower concentrations are shown in purple; higher concentrations are in yellow. Red triangles indicate fire hotspots.NASA’s Goddard Space Flight Center They found that the Canadian fires released more carbon in five months than Russia or Japan emitted from fossil fuels in all of 2022 (about 480 million and 291 million metric tons, respectively). While the carbon dioxide (CO2) emitted from both wildfires and fossil fuel combustion cause extra warming immediately, there’s an important distinction, the scientists noted. As the forest regrows, the amount of carbon emitted from fires will be reabsorbed by Earth’s ecosystems. The CO2 emitted from the burning of fossil fuels is not readily offset by any natural processes.
An ESA (European Space Agency) instrument designed to measure air pollution observed the fire plumes over Canada. The TROPOspheric Monitoring Instrument, or TROPOMI, flies aboard the Sentinel 5P satellite, which has been orbiting Earth since 2017. TROPOMI has four spectrometers that measure and map trace gases and fine particles (aerosols) in the atmosphere.
The scientists started with the end result of the fires: the amount of carbon monoxide (CO) in the atmosphere during the fire season. Then they “back-calculated” how large the emissions must have been to produce that amount of CO. They were able to estimate how much CO2 was released based on ratios between the two gases in the fire plumes.
“What we found was that the fire emissions were bigger than anything in the record for Canada,” said Brendan Byrne, a JPL scientist and lead author of the new study. “We wanted to understand why.”
Warmest Conditions Since at Least 1980
Wildfire is essential to the health of forests, clearing undergrowth and brush and making way for new plant life. In recent decades, however, the number, severity, and overall size of wildfires have increased, according to the U.S. Department of Agriculture. Contributing factors include extended drought, past fire management strategies, invasive species, and the spread of residential communities into formerly less developed areas.
To explain why Canada’s fire season was so intense in 2023, the authors of the new study cited tinderbox conditions across its forests. Climate data revealed the warmest and driest fire season since at least 1980. Temperatures in the northwest part of the country — where 61% of fire emissions occurred — were more than 4.5 degrees Fahrenheit (2.6 degrees Celsius) above average from May through September. Precipitation was also more than 3 inches (8 centimeters) below average for much of the year.
Driven in large part by these conditions, many of the fires grew to enormous sizes. The fires were also unusually widespread, charring some 18 million hectares of forest from British Columbia in the west to Quebec and the Atlantic provinces in the east. The area of land that burned was more than eight times the 40-year average and accounted for 5% of Canadian forests.
“Some climate models project that the temperatures we experienced last year will become the norm by the 2050s,” Byrne said. “The warming, coupled with lack of moisture, is likely to trigger fire activity in the future.”
If events like the 2023 Canadian forest fires become more typical, they could impact global climate. That’s because Canada’s vast forests compose one of the planet’s important carbon sinks, meaning that they absorb more CO2 from the atmosphere than they release. The scientists said that it remains to be seen whether Canadian forests will continue to absorb carbon at a rapid rate or whether increasing fire activity could offset some of the uptake, diminishing the forests’ capacity to forestall climate warming.
News Media Contacts
Jane J. Lee / Andrew Wang
Jet Propulsion Laboratory, Pasadena, Calif.
818-354-0307 / 626-379-6874
jane.j.lee@jpl.nasa.gov / andrew.wang@jpl.nasa.gov
Written by Sally Younger
2024-113
Share
Details
Last Updated Aug 28, 2024 Related Terms
Earth Climate Change Earth Science Water on Earth Explore More
3 min read Eclipse Soundscapes AudioMoth Donations Will Study Nature at Night
During the April 8, 2024 total solar eclipse, approximately 770 AudioMoth recording devices were used…
Article 45 mins ago 9 min read Looking Back on Looking Up: The 2024 Total Solar Eclipse
Introduction First as a bite, then a half Moon, until crescent-shaped shadows dance through the…
Article 6 days ago 3 min read Entrepreneurs Challenge Prize Winner Uses Artificial Intelligence to Identify Methane Emissions
The NASA Science Mission Directorate (SMD) instituted the Entrepreneurs Challenge to identify innovative ideas and…
Article 1 week ago Keep Exploring Discover Related Topics
Missions
Humans in Space
Climate Change
Solar System
View the full article
-
By European Space Agency
On 8 September 2024, the first of four satellites that make up ESA’s Cluster mission will reenter Earth’s atmosphere over the South Pacific Ocean Uninhabited Area.
This marks the end of the historic mission, over 24 years after it was sent into space to measure Earth’s magnetic environment. Though the remaining three satellites will also stop making scientific observations, discoveries using existing mission data are expected for years to come.
This ‘targeted reentry’ is the first of its kind. ESA’s efforts to ensure a clean end to the Cluster mission go beyond international standards, making the agency a world-leader in sustainable space exploration.
View the full article
-
By NASA
The NASA Science Mission Directorate (SMD) instituted the Entrepreneurs Challenge to identify innovative ideas and technologies from small business start-ups with the potential to advance the agency’s science goals. Geolabe—a prize winner in the latest Entrepreneurs Challenge—has developed a way to use artificial intelligence to identify global methane emissions. Methane is a greenhouse gas that significantly contributes to global warming, and this promising new technology could provide data to help decision makers develop strategies to mitigate climate change.
SMD sponsored Entrepreneurs Challenge events in 2020, 2021, and 2023. Challenge winners were awarded prize money—in 2023 the total Entrepreneurs Challenge prize value was $1M. To help leverage external funding sources for the development of innovative technologies of interest to NASA, SMD involved the venture capital community in Entrepreneurs Challenge events. Numerous challenge winners have subsequently received funding from both NASA and external sources (e.g., other government agencies or the venture capital community) to further develop their technologies.
Each Entrepreneurs Challenge solicited submissions in specific focus areas such as mass spectrometry technology, quantum sensors, metamaterials-based sensor technologies, and more. The focus areas of the latest 2023 challenge included lunar surface payloads and climate science.
A recent Entrepreneurs Challenge success story involves 2023 challenge winner Geolabe—a startup founded by Dr. Claudia Hulbert and Dr. Bertrand Rouet-Leduc in 2020 in Los Alamos, New Mexico. The Geolabe team developed a method that uses artificial intelligence (AI) to automatically detect methane emissions on a global scale.
This image taken from a NASA visualization shows the complex patterns of methane emissions around the globe in 2018, based on data from satellites, inventories of human activities, and NASA global computer models. Credit: NASA’s Scientific Visualization Studio As global temperatures rise to record highs, the pressure to curb greenhouse gas emissions has intensified. Limiting methane emissions is particularly important since methane is the second largest contributor to global warming, and is estimated to account for approximately a third of global warming to date. Moreover, because methane stays in the atmosphere for a shorter amount of time compared to CO2, curbing methane emissions is widely considered to be one of the fastest ways to slow down the rate of global warming.
However, monitoring methane emissions and determining their quantities has been challenging due to the limitations of existing detection methods. Methane plumes are invisible and odorless, so they are typically detected with specialized equipment such as infrared cameras. The difficulty in finding these leaks from space is akin to finding a needle in a haystack. Leaks are distributed around the globe, and most of the methane plumes are relatively small, making them easy to miss in satellite data.
Multispectral satellite imagery has emerged as a viable methane detection tool in recent years, enabling routine measurements of methane plumes at a global scale every few days. However, with respect to methane, these measurements suffer from very poor signal to noise ratio, which has thus far allowed detection of only very large emissions (2-3 tons/hour) using manual methods.
This landscape of “mountains” and “valleys” speckled with glittering stars is actually the edge of a nearby, young, star-forming region called NGC 3324 in the Carina Nebula. Captured in infrared light by NASA’s new James Webb Space Telescope, this image reveals for the first time previously invisible areas of star birth. Credit: NASA, ESA, CSA, and STScI The Geolabe team has developed a deep learning architecture that automatically identifies methane signatures in existing open-source spectral satellite data and deconvolves the signal from the noise. This AI method enables automatic detection of methane leaks at 200kg/hour and above, which account for over 85% of the methane emissions in well-studied, large oil and gas basins. Information gained using this new technique could help inform efforts to mitigate methane emissions on Earth and automatically validate their effects. This Geolabe project was featured in Nature Communications on May 14, 2024.
SPONSORING ORGANIZATION
NASA Science Mission Directorate
Share
Details
Last Updated Aug 20, 2024 Related Terms
Earth Science Science-enabling Technology Technology Highlights Uncategorized Explore More
3 min read Perseverance Pays Off for Student Challenge Winners
As radioisotopes power the Perseverance rover to explore Mars, perseverance “powered” three winners to write…
Article
6 days ago
3 min read New TEMPO Cosmic Data Story Makes Air Quality Data Publicly Available
Article
7 days ago
3 min read Earth Educators Rendezvous with Infiniscope and Tour It
Article
1 week ago
View the full article
-
-
Check out these Videos
Recommended Posts
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.