Members Can Post Anonymously On This Site
-
Similar Topics
-
By NASA
5 Min Read NASA Returns to Arctic Studying Summer Sea Ice Melt
NASA's Gulfstream III aircraft taxis on the runway at Pituffik Space Base as it begins one of its daily science flights for the ARCSIX mission. Credits: NASA/Gary Banziger What happens in the Arctic doesn’t stay in the Arctic, and a new NASA mission is helping improve data modeling and increasing our understanding of Earth’s rapidly changing climate. Changing ice, ocean, and atmospheric conditions in the northernmost part of Earth have a large impact on the entire planet. That’s because the Arctic region acts like Earth’s air conditioner.
Much of the Sun’s energy is transported from tropical regions of our planet by winds and weather systems into the Arctic where it is then lost to space. This process helps cool the planet.
The NASA-sponsored Arctic Radiation Cloud Aerosol Surface Interaction Experiment (ARCSIX) mission is flying three aircraft over the Arctic Ocean north of Greenland to study these processes. The aircraft are equipped with instruments to gather observations of surface sea ice, clouds, and aerosol particles, which affect the Arctic energy budget and cloud properties. The energy budget is the balance between the energy that Earth receives from the Sun and the energy the Earth loses to outer space.
To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video
This highlight video gives viewers a front row seat to a typical day on the ARCSIX mission from Pituffik Space Base as NASA's research scientists, instrument operators, and flight crews fly daily routes observing sea ice and clouds 750 miles north of the Arctic Circle in Greenland.NASA/Gary Banziger “More sea ice makes that air conditioning effect more efficient. Less sea ice lessens the Arctic’s cooling effect,” says Patrick Taylor, a climate scientist at NASA’s Langley Research Center in Hampton, Virginia. “Over the last 40 years, The Arctic has lost a significant amount of sea ice making the Arctic warm faster. As the Arctic warms and sea ice melts, it can cause ripple effects that impact weather conditions thousands of miles away, how fast our seas are rising, and how much flooding we get in our neighborhoods.”
As the Arctic warms and sea ice melts, it can cause ripple effects…thousands of miles away.
Patrick Taylor
NASA Climate Research Scientist
The first series of flights took place in May and June as the seasonal melting of ice started. Flights began again on July 24 during the summer season, when sea ice melting is at its most intense.
“We can’t do this kind of Arctic science without having two campaigns,” said Taylor, the deputy science lead for ARCSIX. “The sea ice surface in the spring was very bright white and snow covered. We saw some breaks in the ice. What we will see in the second campaign is less sea ice and sea ice that is bare, with no snow. It will be covered with all kinds of melt ponds – pooling water on top of the ice – that changes the way the ice interacts with sunlight and potentially changes how the ice interacts with the atmosphere and clouds above.”
Sea ice and the snow on top of the ice insulate the ocean from the atmosphere, reflecting the Sun’s radiation back towards space, and helping to cool the planet. Less sea ice and darker surfaces result in more of the Sun’s radiation being absorbed at the surface or trapped between the surface and the clouds.
To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video
A pilot's view of Arctic sea ice from NASA's P-3 Orion aircraft during NASA's ARCSIX airborne science mission flights in June.NASA/Gary Banziger Understanding this relationship, and the role clouds play in the system, will help scientists improve satellite data and better predict future changes in the Arctic climate.
“This unique team of pilots, engineers, scientists, and aircraft can only be done by leveraging expertise from multiple NASA centers and our partners,” said Linette Boisvert, cryosphere lead for the mission from NASA’s Space Flight Center in Greenbelt, Maryland. “We gathered great data of the snow and ice pre-melt and at the onset of melt. I can’t wait to see the changes at the height of melt as we measure the same areas covered with melt ponds.”
NASA partnered with the University of Colorado Boulder for the ARCSIX mission, and the research team found some surprises in their early data analysis from the spring campaign. One potential discovery is something Taylor is calling a “sea ice sandwich”, when a younger layer of sea ice is caught in between two layers of older sea ice. Scientists also found more drizzle within the clouds than expected. Both observations will need further investigating once the data is fully processed.
A research scientist monitors data measurements in-flight during the spring campaign of the ARCSIX mission.NASA/Gary Banziger “A volcano erupted in Iceland, and we believe the volcanic aerosol plume was indicated by our models four days later,” Taylor said. “Common scientific knowledge tells us volcanic particles, like ash and sulfate, would have already been removed from the atmosphere. More work needs to be done, but our initial results suggest these particles might live in the atmosphere much longer than previously thought.”
Previous studies suggest that aerosol particles in clouds can influence sea ice melt. Data collected during ARCSIX’s spring flights showed the Arctic atmosphere had several aerosol particle layers, including wildfire smoke, pollution, and dust transported from Asia and North America.
“We got everything we hoped for and more in the first campaign,” Taylor added. “The data from this summer will help us better understand how clouds and sea ice behave. We’ll be able to use these results to improve predictive models. In the coming years, scientists will be able to better predict how to mitigate and adapt to the rapid changes in climate we’re seeing in the Arctic.”
Read More ESPO.NASA.gov
AIR.LARC.NASA.gov
NASA.gov/Earth
Share
Details
Last Updated Jul 26, 2024 EditorCharles G. HatfieldContactCharles G. Hatfieldcharles.g.hatfield@nasa.govLocationLangley Research Center Related Terms
Earth Airborne Science Goddard Space Flight Center Ice & Glaciers Langley Research Center Sea Ice Wallops Flight Facility Explore More
4 min read NASA Mission Flies Over Arctic to Study Sea Ice Melt Causes
Article 2 months ago 5 min read Antarctic Sea Ice Near Historic Lows; Arctic Ice Continues Decline
Article 4 months ago 4 min read NASA Ice Scientists Take Flight from Greenland to Study Melting Arctic Ice
Article 2 years ago View the full article
-
By NASA
NASA/Matthew Dominick NASA astronaut Matthew Dominick captured this image of Hurricane Beryl in the Caribbean on July 1, 2024, while aboard the International Space Station, and posted it to X. The Category 4 hurricane had winds of about 130 mph (215 kph).
Hurricanes – tropical cyclones that form over the Atlantic Ocean or the eastern Pacific ocean – use warm, moist air as fuel. The warm, moist air over the ocean rises upward from near the surface, causing an area of lower air pressure below. Air from surrounding areas with higher air pressure pushes into the low pressure area. Then that “new” air becomes warm and moist and rises, too. As the warm air continues to rise, the surrounding air swirls in to take its place. As the warmed, moist air rises and cools off, the water in the air forms clouds. The whole system of clouds and wind spins and grows, fed by the ocean’s heat and water evaporating from the surface.
NASA studies hurricanes from space through photos like this one, as well as observations from satellites. This vantage point helps scientists understand how climate change impacts hurricanes and learn how communities can better prepare for tropical cyclones in a warmer world. Learn more about how hurricane first responders use NASA resources and data.
Image Credit: NASA/Matthew Dominick
View the full article
-
By NASA
5 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
Science in Space: June 2024
The Sun wields a huge influence on Earth. Its gravity holds our planet in its orbit, and solar energy drives the seasons, ocean currents, weather, climate, radiation belts, and auroras on Earth.
The solar wind, a flow of charged particles from the Sun, constantly bombards Earth’s magnetosphere, a vast magnetic shield around the planet. The Sun occasionally releases massive amounts of energy, creating solar geomagnetic storms that can interfere with communications and navigation and disrupt the electric power grid.
The colorful aurora borealis or Northern Lights and aurora australis or Southern Lights are created by the transfer of energy from solar electrons to molecules in Earth’s upper atmosphere. Those molecules then release that energy in the form of light. Different molecules create specific colors, such as green from oxygen.
Because Earth’s magnetic field directs solar electrons toward the poles, auroras typically are visible only at high latitudes, such as in Canada in the north and Australia in the south. But solar storms can send the lights into much lower latitudes. During a series of large solar eruptions in May 2024, for example, the display could be seen as far south as Texas and California.
Satellites captured auroras visible across the globe on May 11, 2024.NOAA NASA has multiple missions studying how the Sun and solar storms affect Earth and space travel. The International Space Station contributes to this research in several ways.
Improved Solar Energy Measurements
The station’s Total and Spectral Solar Irradiance Sensor (TSIS) measures solar irradiance, the solar energy Earth receives, and solar spectral irradiance, a measure of the Sun’s energy in individual wavelengths. Knowing the magnitude and variability of solar irradiance improves understanding of Earth’s climate, atmosphere, and oceans and enables more accurate predictions of space weather. Better predictions could in turn help protect humans and satellites in space and electric power transmission and radio communications on the ground.
The first five years of TSIS observations demonstrated improved long-term spectral readings and lower uncertainties than measurements from a previous NASA mission, the Solar Radiation and Climate satellite. The accuracy of TSIS observations could improve models of solar irradiance variability and contribute to a long-term record of solar irradiance data.
Earlier Sun Monitoring
Installation of the Solar instruments on the space station during a spacewalk.NASA The ESA (European Space Agency) Sun Monitoring on the External Payload Facility of Columbus, or Solar, collected data on solar energy output for more than a decade with three instruments covering most wavelengths of the electromagnetic spectrum. Different wavelengths emitted by the Sun are absorbed by and influence Earth’s atmosphere and contribute to our climate and weather. This monitoring helps scientists see how solar irradiance affects Earth and provides data to create models for predicting its influence.
One instrument, the Solar Variable and Irradiance Monitor, covered the near-ultraviolet, visible, and thermal parts of the spectrum and helped improve the accuracy of these measurements.
The SOLar SPECtral Irradiance Measurement instrument covered higher ranges of the solar spectrum. Its observations highlighted significant differences from previous solar reference spectra and models. Researchers also reported that repeated observations made it possible to determine a reference spectrum for the first year of the SOLAR mission, which corresponded to a solar minimum prior to Solar Cycle 24.
Solar activity rises and falls over roughly 11-year cycles. The current Solar Cycle 25 began in December 2019, and scientists predicted a peak in solar activity between January and October of 2024, which included the May storms.
The third instrument, SOLar Auto-Calibrating EUV/UV Spectrometers, measured the part of the solar spectrum between extreme ultraviolet and ultraviolet. Most of this highly energetic radiation is absorbed by the upper atmosphere, making it impossible to measure from the ground. Results suggested that these instruments could overcome the problem of degrading sensitivity seen with other solar measuring devices and provide more efficient data collection.
Auroras from Space
An aurora borealis display photographed from the International Space Station.NASA Astronauts occasionally photograph the aurora borealis from the space station and post these images.
For the CSA (Canadian Space Agency) AuroraMAX project, crew members photographed the aurora borealis over Yellowknife, Canada, between fall 2011 and late spring 2012. The space images, coordinated with a network of ground-based observatories across Canada, contributed to an interactive display at an art and science festival to inspire public interest in how solar activity affects Earth. The project also provides a live feed of the aurora borealis online every September through April.
Student Satellites
Deployment of the Miniature X-ray Solar Spectrometer and other CubeSats from the space station.NASA The Miniature X-ray Solar Spectrometer CubeSat measured variation in solar X-ray activity to help scientists understand how it affects Earth’s upper atmosphere. Solar X-ray activity is enhanced during solar flares. Students at the University of Colorado Laboratory for Atmospheric Space Physics built the satellite, which deployed from the space station in early 2016.
Better data help scientists understand how solar events affect satellites, crewed missions, and infrastructure in space and on the ground. Ongoing efforts to measure how Earth’s atmosphere responds to solar storms are an important part of NASA’s plans for Artemis missions to the Moon and for later missions to Mars.
Melissa Gaskill
International Space Station Research Communications Team
NASA’s Johnson Space Center
Search this database of scientific experiments to learn more about those mentioned above.
Keep Exploring Discover Related Topics
Latest News from Space Station Research
Sun
Overview The Sun’s gravity holds the solar system together, keeping everything – from the biggest planets to the smallest particles…
NASA Heliophysics
Overview The Science Mission Directorate Heliophysics Division studies the nature of the Sun, and how it influences the very nature…
Station Science 101: Earth and Space Science
View the full article
-
By NASA
Credits: NASA NASA has selected KBR Wyle Services LLC, of Fulton, Maryland, to provide safety and mission assurance services to the agency.
The Safety and Mission Assurance, Audits, Assessments, and Analysis (SA3) Services contract is a cost-plus-fixed-fee contract with an indefinite-delivery/indefinite-quantity provision and a maximum potential value of approximately $75.3 million. The three-year base performance period of this contract begins August 1, 2024, and is followed by a two-year option, which would end July 31, 2029.
The SA3 contract will provide safety and mission assurance services to NASA Headquarters in Washington and other NASA centers, programs, projects, and activities through the NASA Safety Center in Cleveland. These services include, but aren’t limited to, audit/assessment/analysis support, safety assessments and hazard analysis, reliability and maintainability analysis, risk analysis and management, supply chain data management and analytics, software safety and assurance, training and outreach, quality engineering and assurance, and information systems support.
For information about NASA and other agency programs, visit:
https://www.nasa.gov
-end-
Tiernan Doyle
Headquarters, Washington
202-774-8357
tiernan.doyle@nasa.gov
Jan Wittry
Glenn Research Center, Cleveland
216-433-5466
jan.m.wittry-1@nasa.gov
Share
Details
Last Updated Jun 10, 2024 LocationNASA Headquarters Related Terms
NASA Centers & Facilities NASA Headquarters NASA Safety Center View the full article
-
By NASA
2 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
Food for the Apollo astronauts was not always especially appealing, but thanks to the protocol NASA and Pillsbury came up with, known as the Hazard Analysis and Critical Control Point (HAACP) system, it was always safe.Credit: NASA Countless NASA technologies turn up in our everyday lives, but one of the space agency’s most important contributions to modern society isn’t a technology at all – it’s the methodology that ensures the safety of the food we eat. Today the safety procedures and regulations for most of the food produced around the world are based on a system NASA created to guarantee safe food for Apollo astronauts journeying to the Moon.
For the Gemini missions, NASA and partner Pillsbury tested the food they were producing at the Manned Spacecraft Center, now Johnson Space Center in Houston, and destroyed entire batches when irregularities were found, a process similar to industry practices of the day. In response to agencywide guidelines from the Apollo Program Office aimed at ensuring the reliability of all critical systems, they altered that method for the Apollo missions.
They focused on identifying any points in the production process where hazards could be introduced, establishing procedures to eliminate or control each of those hazards, and then monitoring each of those points regularly. And they required extensive documentation of all this work. This became the foundation for the Hazard Analysis and Critical Control Point (HACCP) system.
The Apollo missions were humans’ longest and farthest voyages in space, so food for the astronauts had to be guaranteed safe for consumption hundreds of thousands of miles from any medical facility. Credit: NASA
Howard Bauman, the microbiologist leading Pillsbury’s Apollo work, convinced his company to adopt the approach, and he became the leading advocate for its adoption across the food industry. That gradual process took decades, starting with the regulation of certain canned foods in the 1970s and culminating in the 2011 Food Safety Modernization Act, which mandated HACCP-like requirements across all food producers regulated by the U.S. Food and Drug Administration. By then, the U.S. Department of Agriculture was managing HACCP requirements for meat and poultry, while Canada and much of Europe had also put similar rules in place.
The standards also apply to any outside producers who want to export food into a country that requires HACCP, effectively spreading them across the globe.
Read More Share
Details
Last Updated Jun 10, 2024 Related Terms
Spinoffs Technology Transfer Technology Transfer & Spinoffs Explore More
2 min read New Energy Source Powers Subsea Robots Indefinitely
Power modules driven by ocean temperatures save money, reduce pollution
Article 6 days ago 2 min read Tech Today: Measuring the Buzz, Hum, and Rattle
NASA-supported wireless microphone array quickly, cheaply, and accurately maps noise from aircraft, animals, and more.
Article 2 weeks ago 2 min read Tech Today: From Spacesuits to Racing Suits
Article 3 weeks ago Keep Exploring Discover Related Topics
Technology Transfer & Spinoffs
Humans in Space
The Apollo Program
Astronauts
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.