Instagram: NASA Hosts TV Program On Sea Level Rise
At 1 p.m. EDT (10 a.m. PDT) on Friday, Aug. 28, NASA's Goddard Space Flight Center in Greenbelt, Maryland, will host a live TV program about agency research into how and why the massive Greenland ice sheet is changing. The event features scientists actively conducting field work in Greenland, along with extensive video footage of their work performed over this summer.
Panelists include: Tom Wagner (cryosphere program scientist with NASA's Earth Science Division), Laurence Smith (chair of the University of California, Los Angeles Department of Geography), Mike Bevis (professor of geodynamics at Ohio State University in Columbus), Sophie Nowicki (physical scientist at Goddard), and Josh Willis (JPL).
The Friday program will air live on NASA TV and stream online at: https://www.nasa.gov/nasatv. To ask questions via social media during the televised event, use the hashtag #askNASA.
For complete transcript, click here.
Credits
Please give credit for this item to:
NASA's Goddard Space Flight Center
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Writer
- Patrick Lynch (NASA/GSFC)
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Producers
- Jefferson Beck (KBR Wyle Services, LLC)
- Joy Ng (KBRwyle)
Series
This visualization can be found in the following series:Related pages
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ID: 4853 Visualization
27-year Sea Level Rise - TOPEX/JASON
Read moreSea surface height change from 1992 to 2019, with colorbar || This visualization shows total sea level change between 1992 and 2019, based on data collected from the TOPEX/Poseidon, Jason-1, Jason-2, and Jason-3 satellites. Blue regions are where sea level has gone down, and orange/red regions are where sea level has gone up. Since 1992, seas around the world have risen an average of nearly 6 inches. The color range for this visualization is -15 cm to +15 cm (-5.9 inches to +5.9 inches), though measured data extends above and below 15 cm (5.9 inches). This particular range was chosen to highlight variations in sea level change. ||
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ID: 11987 Produced Video
Greenland Icebergs
Read moreIceberg footage in Disko Bay near Ilulissat, Greenland filmed in July, 2015. ||
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ID: 4325 Visualization
NASA GSFC MASCON Solution over Greenland from Jan 2004 - Jun 2014
Read moreVisualization of the mass change over Greenland from January 2004 through June 2014. The surface of Greenland shows the change in equivalent water height while the graph overlay shows the total accumulated change in gigatons. || GRACE, NASA's Gravity Recovery and Climate Experiment, consists of twin co-orbiting satellites that fly in a near polar orbit separated by a distance of 220 km. GRACE precisely measures the distance between the two spacecraft in order to make detailed measurements of the Earth's gravitational field. Since its launch in 2002, GRACE has provided a continuous record of changes in the mass of the Earth's ice sheets.This animations shows the change in the the Greenland Ice Sheet between January 2004 and June 2014. The 1-arc-deg NASA GSFC mascon solution data was resampled to a 998 x 1800 data array using Kriging interpolation. A color scale was applied in the range of +250 to -250 centimeters of equivalent water height, where blue values indicate an increase in the ice sheet mass while red shades indicate a decrease. In addition, the running sum total of the accumulated mass change over the Greenland Ice Sheet is shown on a graph overlay in gigatons.Technical Note: The glacial isostatic adjustment signal (Earth mass redistribution in response to historical ice loading) has been removed using the ICE-6G model (Peltier et al. 2015). ||
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ID: 4347 Visualization
NASA GSFC MASCON Solution over Antarctica from Jan 2004 - Jun 2014
Read moreVisualization of the mass change over the Antarctic Ice Sheet from January 2004 through June 2014. The color on the surface of the ice sheet shows the change in equivalent water height while the graph overlay shows the total accumulated change in gigatons. || GRACE, NASA's Gravity Recovery and Climate Experiment, consists of twin co-orbiting satellites that fly in a near polar orbit separated by a distance of 220 km. GRACE precisely measures the distance between the two spacecraft in order to make detailed measurements of the Earth's gravitational field. Since its launch in 2002, GRACE has provided a continuous record of changes in the mass of the Earth's ice sheets.This animations shows the change in the mass of the Antarctic Ice Sheet between January 2004 and June 2014 as measured by the pair of GRACE satellites. The 1-arc-deg NASA GSFC mascon solution data was resampled to a 5130 x 5130 data array using Kriging interpolation. A color scale was applied in the range of +250 to -250 centimeters of equivalent water height, where blue values indicate an increase in the ice sheet mass while red shades indicate a decrease. In addition, a graph overlay shows the running total of the accumulated mass change in gigatons.The data is first shown over the entire Antarctic Ice Sheet with the graph showing the total change in gigatons for the full ice sheet. The camera then zooms to focus on the West Antarctic Ice Sheet, the region to the West of the Trans-Antarctic mountains, where much of the loss has taken place. The animation is shown again over this region while the graph of ice loss presents the change over West Antarctica alone. Regions composed of the floating ice shelves, and thus not a part of the Antarctic Ice Sheet, are shown in a pale shade of green.Technical Note: The glacial isostatic adjustment signal (Earth mass redistribution in response to historical ice loading) has been removed using the ICE-6G model (Peltier et al. 2015). ||
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ID: 11982 Produced Video
Aerials over Greenland
Read moreA reel of helicopter footage taken in July of 2015 over Greenland including a transit from Kangerlussuaq, Greenland to a field camp on the ice sheet, operated by UCLA's Larry Smith footage over the Ilulissat IceFjord and nearby glaciers. ||
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ID: 11983 Produced Video
Greenland Beauty Shots
Read moreViews of Greenlandic scenery from Kangerlussuaq, the terminous of the Russell Glacier, and the Ilulissat region. ||
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ID: 11984 Produced Video
Greenland Melt Water
Read moreVarious scenes of water melting from the Greenland Ice Sheet on its way to the sea. ||
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ID: 11985 Produced Video
Researchers in the Field
Read moreNASA, the National Science Foundation, and universities support a variety of field research in Greenland. || UCLA's Larry Smith, Vena Chu from UC Berkeley and other reserachers conduct work in the ablation, or melt zone of the Greenland Ice Sheet. The work included the deployment of floating sensors, conducting 72 continuous hours of melt water profiles, and ice mapping using fixed-wing drones. || Grace Andrews and her colleague sample melt water originating from the Russell Glacier as part of a study on C02 evasion led by Andrew Jacobson from Northwestern University. ||
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ID: 4345 Visualization
22-year Sea Level Rise - TOPEX/JASON
Read moreSpinning globe showing TOPEX/JASON 22-year sea level data. Earth spins once before camera zooms into West Atlantic, East Pacific, and West Pacific regions. With colorbarThis video is also available on our YouTube channel. || This visualization shows total sea level change between 1992 and 2014, based on data collected from the TOPEX/Poseidon, Jason-1, and Jason-2 satellites. Blue regions are where sea level has gone down, and orange/red regions are where sea level has gone up. Since 1992, seas around the world have risen an average of nearly 3 inches. The color range for this visualization is -7 cm to +7 cm (-2.76 inches to +2.76 inches), though measured data extends above and below 7cm(2.76 inches). This particular range was chosen to highlight variations in sea level change. ||
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ID: 4328 Visualization
Greenland's Glaciers as seen by RadarSat
Read moreAn animation up the Greenland's Sermilik Fjord to the calving front of the Helheim Glacier, showing the glacier front's change between 2000 to 2013This video is also available on our YouTube channel. || This animation is based on 30-meter topography data for Greenland along with an ocean and an ice sheet mask provided by the Greenland Ice Mapping Project (GIMP) at Ohio State. Each of these datasets consists of a 6 x 6 array of 124 megapixel tiles. The surface texture is derived from seven sets of 20-meter Radarsat reflectance data from the Canadian Space Agency, mosaicked at the University of Washington's Applied Physics Lab and accurately registered to the topography data. Each of six tile sets represents data for one year between 2000 and 2013, while the final one is a composite of the six years that has most areas of missing data resolved. Each of these tile sets consist of a 5 x 5 array of 421 megapixel tiles. The false color of the surface is derived as follows. Three different color scales are applied to the floating point Radarsat reflectance data based on their relationship within the GIMP masks. Areas within the ice sheet mask are mapped to a color ramp from white (high) to grey (low). Areas within the land region of the ocean mask but not in the ice sheet mask are similarly mapped to a color ramp of light to dark tan. The area indicating ocean is mapped to blue. ||
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ID: 11862 Produced Video
Operation IceBridge Arctic 2015 video series
Read moreFor more IceBridge videos NASA’s Operation IceBridge has wrapped up its 2015 Arctic field campaign after covering a vast expanse of science targets during 33 different flights over land ice, sea ice, and glaciers. The airborne campaign flies over the Arctic and Antarctic every year measuring changes in the ice with instruments like radar and lasers. For more on IceBridge, visit NASA's IceBridge webpage. || The Helheim ExperienceTake a few minutes to sit back, put on your headphones, go full screen, and enjoy a birds-eye view of a vast expanse of Greenland's mountainous region near Helheim Glacier in eastern Greenland aboard a NASA C-130. Music courtesy Moby. ||
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ID: 4022 Visualization
Measuring Elevation Changes on the Greenland Ice Sheet
Read moreSince the late 1970's, NASA has been monitoring changes in the Greenland Ice Sheet. Recent analysis of seven years of surface elevation readings from NASA's ICESat satellite and four years of laser and and ice-penetrating radar data from NASA's airborne mission Operation IceBridge shows us how the surface elevation of the ice sheet has changed.The colors shown on the surface of the ice sheet represent the accumulated change in elevation since 2003. The light yellow over the central region of the ice sheet indicates a slight thickening due to snow. This accumulation, along with the weight of the ice sheet, pushes ice toward the coast. Thinning near coastal regions, shown in green, blue and purple, has increased over time and now extends into the interior of the ice sheet where the bedrock topography permits. As a result, there has been an average loss of 300 cubic kilometers of ice per year between 2003 and 2012.This animation portrays the changes occurring in the surface elevation of the ice sheet since 2003 in three drainage regions: the southeast, the northeast and the Jakobshavn regions. In each region, the time advances to show the accumulated change in elevation from 2003 through 2012.—><!——><!—Above: Move bar to compare the change in surface elevation (left) to the bedrock topography (right) in the northeast region. Download HTML to embed this in your web page.The ice sheet is cut away to reveal how the bedrock topography beneath the ice sheet affects the movement of glacial ice in each region. The bedrock topography is colored by elevation with areas below sea level shown in brown and areas above sea level shown in green. Yellow indicates regions at sea level. —><!——><!—Above: Move bar to compare the change in the surface elevation (left) to the bedrock topography (right) in the Jakobshavn region. Download HTML to embed this in your web page.The bedrock topography affects the movement of the ice sheet. Blue/white velocity flows indicate the direction and speed of the ice over time. Slower moving ice is shown as shorter blue flow lines while faster moving ice is shown as longer white flow lines. ||
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