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    "id": 3460,
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    "page_type": "Visualization",
    "title": "Change in Elevation over Greenland with Alternate Color Scale",
    "description": "Changes in the Greenland and Antarctic ice sheets are critical in quantifying forecasts for sea level rise. Since its launch in January 2003, the ICESat elevation satellite has been measuring the change in thickness of these ice sheets. This image of Greenland shows the changes in elevation over the Greenland ice sheet between 2003 and 2006, The white regions indicate a slight thickening, while the blue shades indicate a thinning of the ice sheet. Gray indicates areas where no change in elevation was measured. || ",
    "release_date": "2007-09-21T00:00:00-04:00",
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            "description": "Changes in the Greenland and Antarctic ice sheets are critical in quantifying forecasts for sea level rise. Since its launch in January 2003, the ICESat elevation satellite has been measuring the change in thickness of these ice sheets. This image of Greenland shows the changes in elevation over the Greenland ice sheet between 2003 and 2006, The white regions indicate a slight thickening, while the blue shades indicate a thinning of the ice sheet. Gray indicates areas where no change in elevation was measured.",
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    "studio": "svs",
    "funding_sources": [
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    "credits": [
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            "people": [
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                    "name": "Helen-Nicole Kostis",
                    "employer": "UMBC"
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        {
            "role": "Scientist",
            "people": [
                {
                    "name": "Jay Zwally",
                    "employer": "NASA/GSFC"
                },
                {
                    "name": "Waleed Abdalati",
                    "employer": "NASA/GSFC"
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    "missions": [
        "Ice, Cloud, and land Elevation Satellite (ICESat)",
        "Tropical Rainfall Measuring Mission (TRMM)"
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    "series": [],
    "tapes": [],
    "papers": [],
    "datasets": [
        {
            "name": "",
            "common_name": "",
            "platform": "ICESat",
            "sensor": "GLAS",
            "type": "Other",
            "organizations": [],
            "description": "",
            "credit": "",
            "url": "",
            "date_range": "2003-2006"
        },
        {
            "name": "September Sea Ice Concentration Anomaly",
            "common_name": "",
            "platform": "Nimbus-7",
            "sensor": "SSMR",
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            "organizations": [],
            "description": "",
            "credit": "",
            "url": "",
            "date_range": "September 2003"
        },
        {
            "name": "Monthly Average Precipitation",
            "common_name": "",
            "platform": "TRMM",
            "sensor": "PR and TMI",
            "type": "Other",
            "organizations": [],
            "description": "",
            "credit": "",
            "url": "http://disc.sci.gsfc.nasa.gov/data/datapool/TRMM/01_Data_Products/index.html",
            "date_range": "2003-2006"
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    ],
    "nasa_science_categories": [
        "Earth"
    ],
    "keywords": [
        "Copenhagen",
        "Cryology",
        "Cryosphere",
        "Earth Science",
        "Glacier Elevation/Ice Sheet Elevation",
        "Glacier Topography/Ice Sheet Topography",
        "Glaciers/Ice Sheets",
        "Ice Sheets",
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    "recommended_pages": [],
    "related": [
        {
            "id": 10763,
            "url": "https://svs.gsfc.nasa.gov/10763/",
            "page_type": "Produced Video",
            "title": "Racing off the Edge of Greenland",
            "description": "Once known for its size, the Jakobshavn Glacier in Greenland is now studied for its speed. In 1997 Jakobshavn ended a decades-long period of stability as it began to thin, accelerate and eject ice into the sea at a rapid rate. The glacier thinned by as much as 50 feet (15 m) per year between 1997 and 2003, according to NASA laser altimetry measurements, while other Greenland glaciers were thinning by about three feet (1 m) per year. The glacier now moves at more than nine miles (15 km) per year, doubling its speed from a decade ago. The glacier's calving front has retreated more than six miles (10 km) in the past decade alone. Scientists point to several warming-related causes for the increase in speed and retreat: meltwater can trickle through cracks in the ice and lubricate the friction point between ice and bedrock, and warmer ocean waters underneath the ice shelf also cause thinning. The thinner ice shelf and meltwater reduce resistance to glacier movement. As a glaciology case study and the greatest potential contributor to sea level rise in the Northern Hemisphere, scientists will continue to watch Jakobshavn closely. || ",
            "release_date": "2011-08-16T00:00:00-04:00",
            "update_date": "2023-05-03T13:53:41.587065-04:00",
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                "filename": "Jakobshavn_ortho_68.94N_69.39N_49.212W_51.372W_1024x576.jpg",
                "media_type": "Image",
                "alt_text": "Draining as much as 10 percent of Greenland's land ice, this speedy glacier has scientists' attention.",
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                "height": 576,
                "pixels": 589824
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        }
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    "products": [],
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