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By NASA
The Rocky Mountains in Colorado, as seen from the International Space Station. Snowmelt from the mountainous western United States is an essential natural resource, making up as much as 75% of some states’ annual freshwater supply. Summer heat has significant effects in the mountainous regions of the western United States. Melted snow washes from snowy peaks into the rivers, reservoirs, and streams that supply millions of Americans with freshwater—as much as 75% of the annual freshwater supply for some states.
But as climate change brings winter temperatures to new highs, these summer rushes of freshwater can sometimes slow to a trickle.
“The runoff supports cities most people wouldn’t expect,” explained Chris Derksen, a glaciologist and Research Scientist with Environment and Climate Change Canada. “Big cities like San Francisco and Los Angeles get water from snowmelt.”
To forecast snowmelt with greater accuracy, NASA’s Earth Science Technology Office (ESTO) and a team of researchers from the University of Massachusetts, Amherst, are developing SNOWWI, a dual-frequency synthetic aperture radar that could one day be the cornerstone of future missions dedicated to measuring snow mass on a global scale – something the science community lacks.
SNOWWI aims to fill this technology gap. In January and March 2024, the SNOWWI research team passed a key milestone, flying their prototype for the first time aboard a small, twin-engine aircraft in Grand Mesa, Colorado, and gathering useful data on the area’s winter snowfields.
“I’d say the big development is that we’ve gone from pieces of hardware in a lab to something that makes meaningful data,” explained Paul Siqueira, professor of engineering at the University of Massachusetts, Amherst, and principal investigator for SNOWWI.
SNOWWI stands for Snow Water-equivalent Wide Swath Interferometer and Scatterometer. The instrument probes snowpack with two Ku-band radar signals: a high-frequency signal that interacts with individual snow grains, and a low-frequency signal that passes through the snowpack to the ground.
The high-frequency signal gives researchers a clear look at the consistency of the snowpack, while the low-frequency signal helps researchers determine its total depth.
“Having two frequencies allows us to better separate the influence of the snow microstructure from the influence of the snow depth,” said Derksen, who participated in the Grand Mesa field campaign. “One frequency is good, two frequencies are better.”
The SNOWWI team in Grand Mesa, preparing to flight test their instrument. From an altitude of 4 kilometers (2.5 miles), SNOWWI can map 100 square kilometers (about 38 square miles) in just 30 minutes.
As both of those scattered signals interact with the snowpack and bounce back towards the instrument, they lose energy. SNOWWI measures that lost energy, and researchers later correlate those losses to features within the snowpack, especially its depth, density, and mass.
From an airborne platform with an altitude of 2.5 miles (4 kilometers), SNOWWI could map 40 square miles (100 square kilometers) of snowy terrain in just 30 minutes. From space, SNOWWI’s coverage would be even greater. Siqueira is working with Capella Space to develop a space-ready SNOWWI for satellite missions.
But there’s still much work to be done before SNOWWI visits space. Siqueira plans to lead another field campaign, this time in the mountains of Idaho. Grand Mesa is relatively flat, and Siqueira wants to see how well SNOWWI can measure snowpack tucked in the folds of complex, asymmetrical terrain.
For Derksen, who spends much of his time quantifying the freshwater content of snowpack in Canada, having a reliable database of global snowpack measurements would be game-changing.
“Snowmelt is money. It has intrinsic economic value,” he said. “If you want your salmon to run in mountain streams in the spring, you must have snowmelt. But unlike other natural resources, at this time, we really can’t monitor it very well.”
For information about opportunities to collaborate with NASA on novel, Earth-observing instruments, see ESTO’s catalog of open solicitations with its Instrument Incubator Program here.
Project Leads: Dr. Paul Siqueira, University of Massachusetts (Principal Investigator); Hans-Peter Marshall, University of Idaho (Co-Investigator)
Sponsoring Organizations: NASA’s Earth Science Technology Office (ESTO), Instrument Incubator Program (IIP)
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Last Updated Oct 29, 2024 Related Terms
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By NASA
Since its launch in 2014, the Physical Sciences Informatics (PSI) system has served as NASA’s online repository for physical science data. Now, the PSI system is live with new updates to further align with NASA’s open data policy.
With its first significant update in over five years, the data repository has been completely redesigned, featuring a new layout, improved structure, and enhanced search functionalities. This updated system was created with a focus on user experience, and more updates are anticipated as new features are introduced.
A key new feature of the system is, the PSI Submission Portal. This tool is designed to streamline the processes of collecting, curating, and publishing new data by enabling Principal Investigators and scientific teams to upload files directly to the system with the support of a data curator. The Portal also offers a dedicated workspace for data submitters, assigns a unique digital object identifier to each dataset, and standardizes the documentation and data structure for each investigation.
Both the updated PSI system and Submission Portal can be accessed at PSI.NASA.gov.
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By NASA
NASA’s work, including its Moon to Mars exploration approach, is advancing science and technology for the Artemis Generation, while also driving significant economic growth across the United States, the agency announced Thursday.
In its third agencywide economic impact report, NASA highlighted how its Moon to Mars activities, climate change research and technology development, and other projects generated more than $75.6 billion in economic output across all 50 states and Washington, D.C., in fiscal year 2023.
“To invest in NASA is to invest in American workers, American innovation, the American economy, and American economic competitiveness,” says NASA Administrator Bill Nelson. “Our work doesn’t just expand our understanding of the universe — it fuels economic growth, inspires future generations, and improves our quality of life. As we embark on the next great chapter of exploration, we are proud to help power economic strength, job creation, scientific progress, and American leadership on Earth, in the skies, and in the stars.”
Combined, NASA’s missions supported 304,803 jobs nationwide, and generated an estimated $9.5 billion in federal, state, and local taxes throughout the United States.
The study found NASA’s Moon to Mars activities generated more than $23.8 billion in total economic output and supported an estimated 96,479 jobs nationwide. For investments in climate research and technology, the agency’s activities generated more than $7.9 billion in total economic output and supported an estimated 32,900 jobs in the U.S.
Additional key findings of the study include:
Every state in the country benefits economically through NASA activities. Forty-five states have an economic impact of more than $10 million. Of those 45 states, eight have an economic impact of $1 billion or more. The agency’s Moon to Mars initiative, which includes the Artemis missions, generated nearly $2.9 billion in tax revenue. These activities provided about 32% of NASA’s economic impact. The agency’s investments in climate change research and technology generated more than $1 billion in tax revenue. Approximately 11% of NASA’s economic impacts are attributable to its investments in climate change research and technology. NASA had more than 644 active international agreements for various scientific research and technology development activities in the 2023 fiscal year. The International Space Station, representing 15 countries and five space agencies, has a predominant role in the agency’s international partnerships. In fiscal year 2023, NASA oversaw 2,628 active domestic and international non-procurement partnership agreements, which included 629 new domestic and 109 new international agreements, active partnerships with 587 different non-federal partners across the U.S., and partnerships in 47 of 50 states. NASA Spinoffs, which are public products and processes that are developed with NASA technology, funding, or expertise, provide a benefit to American lives beyond dollars and jobs. As of result of NASA missions, our fiscal year 2023 tech transfer activities produced 1,564 new technology reports, 40 new patent applications, 69 patents issued, and established 5,277 software usage agreements. Scientific research and development, which fuels advancements in science and technology that can help improve daily life on Earth and for humanity, is the largest single-sector benefitting from NASA’s work, accounting for 19% of NASA’s total economic impact. The study was conducted by the Nathalie P. Voorhees Center for Neighborhood and Community Improvement at the University of Illinois at Chicago.
To review the full report, visit:
https://go.nasa.gov/3NEtUIq
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Meira Bernstein / Melissa Howell
Headquarters, Washington
202-615-1747 / 202-961-6602
meira.b.bernstein@nasa.gov / melissa.e.howell@nasa.gov
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Last Updated Oct 24, 2024 LocationNASA Headquarters View the full article
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By NASA
Learn Home Europa Trek: NASA Offers a New… Europa Clipper Overview Learning Resources Science Activation Teams SME Map Opportunities More Science Activation Stories Citizen Science 3 min read
Europa Trek: NASA Offers a New Guided Tour of Jupiter’s Ocean Moon
NASA’s Europa Clipper mission is on its way to explore a moon of Jupiter that researchers believe may be one of the best places in the Solar System to search for life beyond Earth. While the spacecraft makes its more-than-five year journey to Europa, scientists, students, teachers, and the public can tour and explore the landforms of Europa with newly-released enhancements to NASA’s Europa Trek web portal.
One of the largest of Jupiter’s nearly 100 recognized moons, Europa is covered with a global ice cap. But beneath that crust of ice, researchers have found an ocean of liquid water, estimated to have about twice the volume of all of Earth’s oceans combined. This vast amount of liquid water is of particular interest to astrobiologists, scientists studying the origin, evolution, and distribution of life in the Universe. Though Europa’s ocean remains hidden beneath its global crust of ice, we can get important clues about its nature by studying the remarkable landforms of Europa’s icy surface.
To accompany the launch of Europa Clipper, NASA’s Solar System Treks Project released exciting new enhancements to its online Europa Trek portal on September 30, 2024. The new additions to Europa Trek allow users to interactively fly over and explore high-resolution imagery of Europa’s surface from the Voyager, Galileo, and Juno missions. Users can also take a new guided tour of Europa’s amazing landforms, with commentary developed by a collaboration between NASA’s Astrobiology Science Communication Guild and NASA’s Solar System Exploration Research Virtual Institute. The tour and its commentary introduce virtual explorers to the geology and possible biological significance of the diverse features of Europa’s surface.
“This is really fun. It’s cool how you can zoom into the high resolution data. I’ll spread the word about using this!” – Bob Pappalardo, Europa Clipper Project Scientist
The new tour and capabilities of Europa Trek were featured at the Europa Clipper public launch program at the Kennedy Space Center Visitor Center on October 6,2024, in advance of the October 14 launch of the mission. As part of the public program conducted by NASA’s Planetary Mission Program Office, the Europa Trek exhibit allowed hundreds of visitors to try their hands at flying over Europa and visualizing its exotic terrain.
NASA’s Solar System Treks is an infrastructure project within NASA’s Science Activation Team. Their online portals are used for mission planning, planetary science research, and Science, Technology, Engineering, & Mathematics (STEM) education. NASA’s Astrobiology Science Communication Guild is an international, community-based network of astrobiologists who engage in science communication with diverse audiences and learners. Watch for future collaborations between Solar System Treks and the Astrobiology Science Communication Guild at more locations across the Solar System!
Learn more about how Science Activation connects NASA science experts, real content, and experiences with community leaders to do science in ways that activate minds and promote deeper understanding of our world and beyond: https://science.nasa.gov/learn
A stop along the guided tour of Europa landforms Share
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Last Updated Oct 23, 2024 Editor NASA Science Editorial Team Related Terms
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By NASA
A test image of Earth taken by NASA’s Pathfinder Technology Demonstrator-4’s onboard camera. The camera will capture images of the Lightweight Integrated Solar Array and anTenna upon deployment.NASA NASA recently evaluated initial flight data and imagery from Pathfinder Technology Demonstrator-4 (PTD-4), confirming proper checkout of the spacecraft’s systems including its on-board electronics as well as the payload’s support systems such as the small onboard camera. Shown above is a test image of Earth taken by the payload camera, shortly after PTD-4 reached orbit. This camera will continue photographing the technology demonstration during the mission.
Payload operations are now underway for the primary objective of the PTD-4 mission – the demonstration of a new power and communications technology for future spacecraft. The payload, a deployable solar array with an integrated antenna called the Lightweight Integrated Solar Array and anTenna, or LISA-T, has initiated deployment of its central boom structure. The boom supports four solar power and communication arrays, also called petals. Releasing the central boom pushes the still-stowed petals nearly three feet (one meter) away from the spacecraft bus. The mission team currently is working through an initial challenge to get LISA-T’s central boom to fully extend before unfolding the petals and beginning its power generation and communication operations.
Small spacecraft on deep space missions require more electrical power than what is currently offered by existing technology. The four-petal solar array of LISA-T is a thin-film solar array that offers lower mass, lower stowed volume, and three times more power per mass and volume allocation than current solar arrays. The in-orbit technology demonstration includes deployment, operation, and environmental survivability of the thin-film solar array.
“The LISA-T experiment is an opportunity for NASA and the small spacecraft community to advance the packaging, deployment, and operation of thin-film, fully flexible solar and antenna arrays in space. The thin-film arrays will vastly improve power generation and communication capabilities throughout many different mission applications,” said Dr. John Carr, deputy center chief technologist at NASA’s Marshall Space Flight Center in Huntsville, Alabama. “These capabilities are critical for achieving higher value science alongside the exploration of deep space with small spacecraft.”
The Pathfinder Technology Demonstration series of missions leverages a commercial platform which serves to test innovative technologies to increase the capability of small spacecraft. Deploying LISA-T’s thin solar array in the harsh environment of space presents inherent challenges such as deploying large highly flexible non-metallic structures with high area to mass ratios. Performing experiments such as LISA-T on a smaller, lower-cost spacecraft allows NASA the opportunity to take manageable risk with high probability of great return. The LISA-T experiment aims to enable future deep space missions with the ability to acquire and communicate data through improved power generation and communication capabilities on the same integrated array.
The PTD-4 small spacecraft is hosting the in-orbit technology demonstration called LISA-T. The PTD-4 spacecraft deployed into low Earth orbit from SpaceX’s Transporter-11 rocket which launched from Space Launch Complex 4E at Vandenberg Space Force Base in California on Aug. 16. NASA’s Marshall Space Flight Center in Huntsville, Alabama designed and built the LISA-T technology as well as LISA-T’s supporting avionics system. NASA’s Small Spacecraft Technology program, based at NASA’s Ames Research Center in California’s Silicon Valley and led by the agency’s Space Technology Mission Directorate, funds and manages the PTD-4 mission as well as the overall Pathfinder Technology Demonstration mission series. Terran Orbital Corporation of Irvine, California, developed and built the PTD-4 spacecraft bus, named Triumph.
Learn more about NASA’s LISA-T technology:
NASA teams are testing a key technology demonstration known as LISA-T, short for the Lightweight Integrated Solar Array and anTenna. It’s a super compact, stowable, thin-film solar array that when fully deployed in space, offers both a power generation and communication capability for small spacecraft. LISA-T’s orbital flight test is part of the Pathfinder Technology Demonstrator series of missions. To travel farther into deep space, small spacecraft require more electrical power than what is currently available through existing technology. LISA-T aims to answer that demand and would offer small spacecraft access to power without compromising mass or volume. Watch this video to learn more about the spacecraft, its deployment, and the possibilities from John Carr, deputy center chief technologist at NASA’s Marshall Space Flight Center in Huntsville, Alabama. View the full article
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