{
    "id": 4204,
    "url": "https://svs.gsfc.nasa.gov/4204/",
    "page_type": "Visualization",
    "title": "Small Multiples of NSIDC North Pole Sea Ice Extent",
    "description": "This is a still image generated from  National Snow and Ice Data Center (NSIDC) north pole sea ice extent images.  These images are arranged in a grid pattern with the years across the top from 1979 to 2014 and the months running down the image from January to December.By glancing at the image, the viewer can quickly see the periods during the year when north pole sea ice extent is at minimum and maximum.  It is also easy to see how the sea ice has changed over the years.  There is no data for December 1987 and January 1988; these dates are left black. || ",
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    "update_date": "2023-05-03T13:50:35.809624-04:00",
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            "description": "This is a still image generated from  National Snow and Ice Data Center (NSIDC) north pole sea ice extent images.  These <a href=\"ftp://sidads.colorado.edu/DATASETS/NOAA/G02135/\">images</a> are arranged in a grid pattern with the years across the top from 1979 to 2014 and the months running down the image from January to December.<br><br>By glancing at the image, the viewer can quickly see the periods during the year when north pole sea ice extent is at minimum and maximum.  It is also easy to see how the sea ice has changed over the years.  There is no data for December 1987 and January 1988; these dates are left black.",
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                {
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    "studio": "svs",
    "funding_sources": [
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    "credits": [
        {
            "role": "Animator",
            "people": [
                {
                    "name": "Greg Shirah",
                    "employer": "NASA/GSFC"
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        },
        {
            "role": "Project support",
            "people": [
                {
                    "name": "Laurence Schuler",
                    "employer": "ADNET Systems, Inc."
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                {
                    "name": "Ian Jones",
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    "datasets": [
        {
            "name": "Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data",
            "common_name": "",
            "platform": null,
            "sensor": null,
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            "organizations": [
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            ],
            "description": "This data set is generated from brightness temperature data derived from the following sensors: the Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR), the Defense Meteorological Satellite Program (DMSP) -F8, -F11 and -F13 Special Sensor Microwave/Imagers (SSM/Is), and the DMSP-F17 Special Sensor Microwave Imager/Sounder (SSMIS). The data are provided in the polar stereographic projection at a grid cell size of 25 x 25 km. This product is designed to provide a consistent time series of sea ice concentrations (the fraction, or percentage, of ocean area covered by sea ice) spanning the coverage of several passive microwave instruments. To aid in this goal, sea ice algorithm coefficients are changed to reduce differences in sea ice extent and area as estimated using the SMMR and SSM/I sensors. The data are generated using the NASA Team algorithm developed by the Oceans and Ice Branch, Laboratory for Hydrospheric Processes at NASA Goddard Space Flight Center (GSFC).",
            "credit": "",
            "url": "http://nsidc.org/data/nsidc-0051.html",
            "date_range": "01/1979 through 12/2014"
        }
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    "nasa_science_categories": [
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    ],
    "keywords": [
        "Cryology",
        "Cryosphere",
        "Earth Science",
        "Ice",
        "Sea Ice"
    ],
    "recommended_pages": [],
    "related": [
        {
            "id": 11671,
            "url": "https://svs.gsfc.nasa.gov/11671/",
            "page_type": "Produced Video",
            "title": "Sea Ice: Past, Present and Future",
            "description": "Sea ice has covered a portion of the Arctic Ocean for more than 10 million years. But only in the last hundred or so years have advancements in technology—from the beginnings of flight to the dawn of the space age—enabled humans to gain a complete view of the sea ice and an understanding of how it’s changing. Scientific accounts of Arctic sea ice can be traced back to the time of the Roman Empire. Early explorers traveled across land and by sea to witness firsthand the floating sheets of ice that blanket Earth's northern pole. By the mid- to late 20th century, observation of the Arctic’s frozen waters entered a new era. Remote-sensing instruments carried aboard research aircraft and satellites provided enhanced and eventually near-continuous monitoring of sea ice from space. Watch the videos for a closer look at select events in Arctic sea ice exploration. || ",
            "release_date": "2014-10-07T11:45:00-04:00",
            "update_date": "2023-05-03T13:50:28.926258-04:00",
            "main_image": {
                "id": 450620,
                "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011600/a011671/c-1024_print.jpg",
                "filename": "c-1024_print.jpg",
                "media_type": "Image",
                "alt_text": "See a timeline of events in Arctic sea ice exploration.",
                "width": 1024,
                "height": 576,
                "pixels": 589824
            }
        }
    ],
    "sources": [],
    "products": [],
    "newer_versions": [],
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    "alternate_versions": []
}