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        {
            "id": 30768,
            "url": "https://svs.gsfc.nasa.gov/30768/",
            "result_type": "Hyperwall Visual",
            "release_date": "2016-07-31T00:00:00-04:00",
            "title": "September Arctic Sea Ice",
            "description": "Satellite-based passive microwave images of sea ice have provided a reliable tool for continuously monitoring changes in the Arctic ice since 1979. During Northern Hemisphere spring and summer months, the Arctic sea ice melts considerably, usually reaching its minimum extent in September, before colder weather begins to cause ice cover to increase during fall and winter months. This series of images shows Arctic sea ice extent for a selection of years using data from AMSR-E and AMSR2. The burgundy area represents the median sea ice extent observed by satellite sensors in September from 1979 to 2000. Over the last few decades, the average global temperature has been on the rise—and temperatures in the Arctic have risen at nearly twice the rate as temperatures elsewhere on the planet. As temperatures rise in the Arctic, the extent of sea ice declines. Sea ice is highly reflective of the sun’s energy; therefore, reductions in sea ice impact Earth’s radiation budget. Rather than reflecting most of the sun’s energy, ice-free areas absorb sunlight causing subsequent warming of the ocean. || ",
            "hits": 44
        },
        {
            "id": 4060,
            "url": "https://svs.gsfc.nasa.gov/4060/",
            "result_type": "Visualization",
            "release_date": "2013-06-04T10:00:00-04:00",
            "title": "Antarctic Bedrock",
            "description": "<!——><!—Above: Move bar to compare the bedrock topography (left) to the ice sheet surface (right).Download HTML to embed this in your web page.The topography of the bedrock under the Antarctic Ice Sheet is critical to understanding the dynamic motion of the ice sheet, its thickness and its influence on the surrounding ocean and global climate. In 2001, the British Antarctic Survey (BAS) released a map of the bed under the Antarctic Ice Sheet and the seabed extending out on to the continental shelf derived from data collected by an international consortium of scientists over the prior fifty years. The resulting dataset was called BEDMAP (or BEDMAP1).In 2013, BAS released an update of the topographic dataset called BEDMAP2 that incorporates twenty-five million measurements taken over the past two decades from the ground, air and space. This visualization compares the new BEDMAP2 dataset to the original BEDMAP1 dataset showing the improvements in resolution and coverage. <!——><!—Above: Move bar to compare the Bedmap1 topography (left) to the Bedmap2 topography (right). Download HTML to embed this in your web page.Since 2009, NASA's mission Operation IceBridge (OIB) has flown aircraft over the Antarctic Ice Sheet carrying laser and ice-penetrating radar instruments to collect data about the surface height, bedrock topography and ice thickness. This visualization highlights the contribution that OIB has made to this important dataset.The topography in this visualization is exaggerated to emphasize the topographic relief. The amount of exaggeration varies based on the viewpoint, from twenty times in distant views down to nine times when near the Pine Island Bay. || ",
            "hits": 316
        },
        {
            "id": 30005,
            "url": "https://svs.gsfc.nasa.gov/30005/",
            "result_type": "Hyperwall Visual",
            "release_date": "2012-07-17T10:00:00-04:00",
            "title": "AMSR-E Sea Ice",
            "description": "Montage of September sea ice minimum in the Arctic Ocean from 2003 to 2011. || amsre_sept_seaice_2003-2011_print.jpg (1024x575) [145.3 KB] || amsre_sept_seaice_2003-2011.png (4104x2304) [2.3 MB] || amsre_sept_seaice_2003-2011_web.jpg (319x179) [50.4 KB] || amsre_sept_seaice_2003-2011_thm.png (80x40) [6.2 KB] || amsre_sept_seaice_2003-2011_web_searchweb.jpg (320x180) [22.8 KB] || bigimage-e_seaice_arctic_amsre_sept.hwshow [222 bytes] || ",
            "hits": 30
        },
        {
            "id": 10606,
            "url": "https://svs.gsfc.nasa.gov/10606/",
            "result_type": "Produced Video",
            "release_date": "2010-07-02T00:00:00-04:00",
            "title": "Earth: Most Unusual",
            "description": "In exploring the universe, NASA has uncovered one planet more unusual than all others. This 30 second video shows you which planet that is, and explains that NASA science helps us better understand this world without equal. For complete transcript, click here. || G2010-082_EarthMostUnusualPlanet_youtube_hq.00102_print.jpg (1024x576) [90.8 KB] || G2010-082_EarthMostUnusualPlanet_youtube_hq_web.png (320x180) [212.6 KB] || G2010-082_EarthMostUnusualPlanet_youtube_hq_thm.png (80x40) [16.8 KB] || G2010-082_EarthMostUnusualPlanet_appletv.webmhd.webm (960x540) [6.8 MB] || G2010-082_EarthMostUnusualPlanet_appletv.m4v (960x540) [16.1 MB] || G2010-082_EarthMostUnusualPlanet.wmv (1280x720) [14.3 MB] || G2010-082_EarthMostUnusualPlanet_youtube_hq.mov (1280x720) [16.2 MB] || G2010-082_EarthMostUnusualPlanet_ipod_lg.m4v (640x360) [5.4 MB] || G2010-082_EarthMostUnusualPlanet_SVS.mpg (512x288) [4.3 MB] || G2010-082_EarthMostUnusualPlanet.m4v (320x240) [2.9 MB] || G2010-082_EarthMostUnusualPlanet.mov (1280x720) [456.8 MB] || bigmovie-EarthMostUnusualPlanet.hwshow [75 bytes] || ",
            "hits": 34
        },
        {
            "id": 10493,
            "url": "https://svs.gsfc.nasa.gov/10493/",
            "result_type": "Produced Video",
            "release_date": "2009-10-06T09:00:00-04:00",
            "title": "Arctic Sea Ice 101",
            "description": "A fast-paced interview with NASA climate scientist Tom Wagner, where he provides a look at the state of Arctic sea ice in 2009 and discusses NASA's role in monitoring the cryosphere.For complete transcript, click here. || Tom_Wagner-Ag_ep2_Partners_Youtube.00002_print.jpg (1024x576) [68.3 KB] || Tom_Wagner-Ag_ep2_Partners_Youtube_web.png (320x180) [197.0 KB] || Tom_Wagner-Ag_ep2_Partners_Youtube_thm.png (80x40) [16.9 KB] || Wagner_ArcticIce2009_appletv.webmhd.webm (960x540) [63.7 MB] || Tom_Wagner-Ag_ep2_Partners_Youtube.mov (1280x720) [61.4 MB] || Wagner_ArcticIce2009_appletv.m4v (960x540) [156.0 MB] || Wagner_ArcticIce2009_h264.mov (1280x720) [133.7 MB] || Wagner_ArcticIce2009_ipod.m4v (640x360) [52.3 MB] || ",
            "hits": 78
        },
        {
            "id": 3631,
            "url": "https://svs.gsfc.nasa.gov/3631/",
            "result_type": "Visualization",
            "release_date": "2009-09-07T00:00:00-04:00",
            "title": "Daily Arctic Sea Ice - Summer 2009",
            "description": "Sea ice is frozen seawater floating on the surface of the ocean. Some sea ice is semi-permanent, persisting from year to year, and some is seasonal, melting and refreezing from season to season. The sea ice cover reaches its minimum extent at the end of each summer and the remaining ice is called the perennial ice cover.Duing the summer of 2009, the arctic sea ice reached its minimum extent on September 12th. The 2009 minimum extent was the third lowest extent measured since the beginning of the satellite record in 1979. This animation shows the summer retreat of sea ice over the Arctic from 7/1/2009 through 9/12/2009. The sea ice was defined by a 3-day moving average of the AMSR-E 12.5 km sea ice concentration, showing the region where the sea ice concentration was greater than 15%. The false color of the sea ice was derived from the AMSR-E 6.25 km brightness temperature. || ",
            "hits": 17
        },
        {
            "id": 3619,
            "url": "https://svs.gsfc.nasa.gov/3619/",
            "result_type": "Visualization",
            "release_date": "2009-09-01T18:00:00-04:00",
            "title": "A Tour of the Cryosphere 2009",
            "description": "The cryosphere consists of those parts of the Earth's surface where water is found in solid form, including areas of snow, sea ice, glaciers, permafrost, ice sheets, and icebergs. In these regions, surface temperatures remain below freezing for a portion of each year. Since ice and snow exist relatively close to their melting point, they frequently change from solid to liquid and back again due to fluctuations in surface temperature. Although direct measurements of the cryosphere can be difficult to obtain due to the remote locations of many of these areas, using satellite observations scientists monitor changes in the global and regional climate by observing how regions of the Earth's cryosphere shrink and expand.This animation portrays fluctuations in the cryosphere through observations collected from a variety of satellite-based sensors. The animation begins in Antarctica, showing some unique features of the Antarctic landscape found nowhere else on earth. Ice shelves, ice streams, glaciers, and the formation of massive icebergs can be seen clearly in the flyover of the Landsat Image Mosaic of Antarctica. A time series shows the movement of iceberg B15A, an iceberg 295 kilometers in length which broke off of the Ross Ice Shelf in 2000. Moving farther along the coastline, a time series of the Larsen ice shelf shows the collapse of over 3,200 square kilometers ice since January 2002. As we depart from the Antarctic, we see the seasonal change of sea ice and how it nearly doubles the apparent area of the continent during the winter.From Antarctica, the animation travels over South America showing glacier locations on this mostly tropical continent. We then move further north to observe daily changes in snow cover over the North American continent. The clouds show winter storms moving across the United States and Canada, leaving trails of snow cover behind. In a close-up view of the western US, we compare the difference in land cover between two years: 2003 when the region received a normal amount of snow and 2002 when little snow was accumulated. The difference in the surrounding vegetation due to the lack of spring melt water from the mountain snow pack is evident.As the animation moves from the western US to the Arctic region, the areas affected by permafrost are visible. As time marches forward from March to September, the daily snow and sea ice recede and reveal the vast areas of permafrost surrounding the Arctic Ocean.The animation shows a one-year cycle of Arctic sea ice followed by the mean September minimum sea ice for each year from 1979 through 2008. The superimposed graph of the area of Arctic sea ice at this minimum clearly shows the dramatic decrease in Artic sea ice over the last few years.While moving from the Arctic to Greenland, the animation shows the constant motion of the Arctic polar ice using daily measures of sea ice activity. Sea ice flows from the Arctic into Baffin Bay as the seasonal ice expands southward. As we draw close to the Greenland coast, the animation shows the recent changes in the Jakobshavn glacier. Although Jakobshavn receded only slightly from 1964 to 2001, the animation shows significant recession from 2001 through 2009. As the animation pulls out from Jakobshavn, the effect of the increased flow rate of Greenland costal glaciers is shown by the thinning ice shelf regions near the Greenland coast.This animation shows a wealth of data collected from satellite observations of the cryosphere and the impact that recent cryospheric changes are making on our planet.For more information on the data sets used in this visualization, visit NASA's EOS DAAC website.Note: This animation is an update of the animation 'A Short Tour of the Cryosphere', which is itself an abridged version of the animation 'A Tour of the Cryosphere'. The popularity of the earlier animations and their continuing relevance prompted us to update the datasets in parts of the animation and to remake it in high definition. In certain cases, our experiences in using the earlier work have led us to tweak the presentation of some of the material to make it clearer. Our thanks to Dr. Robert Bindschadler for suggesting and supporting this remake. || ",
            "hits": 53
        },
        {
            "id": 3403,
            "url": "https://svs.gsfc.nasa.gov/3403/",
            "result_type": "Visualization",
            "release_date": "2007-02-19T00:00:00-05:00",
            "title": "Antarctic Plumbing: Lake Englehardt's Subglacial Hydraulic System",
            "description": "ICESat satellite laser altimeter elevation profiles from 2003-2006 collected over West Antarctica reveal numerous regions of temporally varying elevation. MODIS satellite imagery over roughly the same time period collaborates where these subglacial fluctuations have occurred. These observations have led scientists to conclude that subglacial water movement is happening in this lake region, revealing a widespread, dynamic subglacial water system that could provide important insights into ice flow and the mass balance of Antarctica's ice. || ",
            "hits": 80
        },
        {
            "id": 3373,
            "url": "https://svs.gsfc.nasa.gov/3373/",
            "result_type": "Visualization",
            "release_date": "2006-09-30T00:00:00-04:00",
            "title": "Zoom from Jakobshavn Glacier with AMSR-E Daily Sea Ice and MODIS Daily Snow Cover",
            "description": "Beginning from a view of Greenland's Jakobshavn glacier, this animation shows motion of sea ice and snow cover over the Arctic from 10/1/2002 through 6/23/2003 as the camera pulls out to frame the full globe. The false color of the sea ice is derived from the AMSR-E 6.25 km brightness temperature. The sea ice extent is defined by AMSR-E 12.5 km sea ice concentration, identifying all regions having a sea ice concentration of greater than 15%. Because AMSR-E is a passive microwave sensor that functions independently from atmospheric effects, this sensor is able to observe the entire polar region every day, even through clouds and snowfalls. || ",
            "hits": 18
        },
        {
            "id": 3368,
            "url": "https://svs.gsfc.nasa.gov/3368/",
            "result_type": "Visualization",
            "release_date": "2006-09-13T00:00:00-04:00",
            "title": "Annual Sea Ice Cycle over Northern Canada",
            "description": "Over the course of a year, sea ice in northern Canada pulsates down into the Hudson Bay and retreats northward in the summer months. In the winter months where the sea ice extends down into the bay, polar bears wander onto the ice in search of food. As summer approaches and the sea ice melts, the bears wander back onto the mainland until the next winter. Data for this animation was gathered from the Aqua satellite's Advanced Microwave Scanning Radiometer for the Earth Observing System (AMSR-E). Aqua is a NASA satellite and the AMSR-E instrument onboard was provided by the Japan Aerospace Exploration Agency (JAXA). For more information on this story, please visit http://www.nasa.gov/centers/goddard/news/topstory/2006/polar_bears.html || ",
            "hits": 48
        }
    ]
}