{
    "id": 2473,
    "url": "https://svs.gsfc.nasa.gov/2473/",
    "page_type": "Visualization",
    "title": "Perennial Ice Cover: The Data (1978-2001)",
    "description": "A view of the arctic perennial ice cover from 1978 to 2001.  The rate of decline averages 9 percent per decade. || Movie of observed changes in perennial ice coverage. || a002473.00100_print.png (720x480) [565.8 KB] || per_ice_observed_pre.jpg (320x240) [13.7 KB] || a002473.webmhd.webm (960x540) [4.2 MB] || per_ice_observed.mpg (640x480) [6.1 MB] || a002473.dv (720x480) [60.4 MB] || ",
    "release_date": "2002-12-31T12:00:00-05:00",
    "update_date": "2023-05-03T13:57:14.976267-04:00",
    "main_image": {
        "id": 524851,
        "url": "https://svs.gsfc.nasa.gov/vis/a000000/a002400/a002473/ice0220_web.jpg",
        "filename": "ice0220_web.jpg",
        "media_type": "Image",
        "alt_text": "Measured perennial ice in 1993.",
        "width": 320,
        "height": 240,
        "pixels": 76800
    },
    "main_video": {
        "id": 524849,
        "url": "https://svs.gsfc.nasa.gov/vis/a000000/a002400/a002473/a002473.webmhd.webm",
        "filename": "a002473.webmhd.webm",
        "media_type": "Movie",
        "alt_text": "Movie of observed changes in perennial ice coverage.",
        "width": 960,
        "height": 540,
        "pixels": 518400
    },
    "main_credits": {
        "Visualizations by": [
            {
                "name": "Tom Bridgman",
                "employer": "Global Science and Technology, Inc."
            }
        ]
    },
    "progress": "Complete",
    "media_groups": [
        {
            "id": 361900,
            "url": "https://svs.gsfc.nasa.gov/2473/#media_group_361900",
            "widget": "Basic text with HTML",
            "title": "",
            "caption": "",
            "description": "A view of the arctic perennial ice cover from 1978 to 2001.  The rate of decline averages 9 percent per decade.",
            "items": [],
            "extra_data": {}
        },
        {
            "id": 361901,
            "url": "https://svs.gsfc.nasa.gov/2473/#media_group_361901",
            "widget": "Video player",
            "title": "",
            "caption": "",
            "description": "Movie of observed changes in perennial ice coverage.",
            "items": [
                {
                    "id": 370046,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 524848,
                        "url": "https://svs.gsfc.nasa.gov/vis/a000000/a002400/a002473/a002473.00100_print.png",
                        "filename": "a002473.00100_print.png",
                        "media_type": "Image",
                        "alt_text": "Movie of observed changes in perennial ice coverage.",
                        "width": 720,
                        "height": 480,
                        "pixels": 345600
                    }
                },
                {
                    "id": 370043,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 524846,
                        "url": "https://svs.gsfc.nasa.gov/vis/a000000/a002400/a002473/per_ice_observed_pre.jpg",
                        "filename": "per_ice_observed_pre.jpg",
                        "media_type": "Image",
                        "alt_text": "Movie of observed changes in perennial ice coverage.",
                        "width": 320,
                        "height": 240,
                        "pixels": 76800
                    }
                },
                {
                    "id": 370045,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 524849,
                        "url": "https://svs.gsfc.nasa.gov/vis/a000000/a002400/a002473/a002473.webmhd.webm",
                        "filename": "a002473.webmhd.webm",
                        "media_type": "Movie",
                        "alt_text": "Movie of observed changes in perennial ice coverage.",
                        "width": 960,
                        "height": 540,
                        "pixels": 518400
                    }
                },
                {
                    "id": 370042,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 524845,
                        "url": "https://svs.gsfc.nasa.gov/vis/a000000/a002400/a002473/per_ice_observed.mpg",
                        "filename": "per_ice_observed.mpg",
                        "media_type": "Movie",
                        "alt_text": "Movie of observed changes in perennial ice coverage.",
                        "width": 640,
                        "height": 480,
                        "pixels": 307200
                    }
                },
                {
                    "id": 370044,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 524847,
                        "url": "https://svs.gsfc.nasa.gov/vis/a000000/a002400/a002473/a002473.dv",
                        "filename": "a002473.dv",
                        "media_type": "Movie",
                        "alt_text": "Movie of observed changes in perennial ice coverage.",
                        "width": 720,
                        "height": 480,
                        "pixels": 345600
                    }
                }
            ],
            "extra_data": {}
        },
        {
            "id": 361902,
            "url": "https://svs.gsfc.nasa.gov/2473/#media_group_361902",
            "widget": "Single image",
            "title": "",
            "caption": "",
            "description": "Measured perennial ice in 1993.",
            "items": [
                {
                    "id": 370051,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 524854,
                        "url": "https://svs.gsfc.nasa.gov/vis/a000000/a002400/a002473/ice0220.jpg",
                        "filename": "ice0220.jpg",
                        "media_type": "Image",
                        "alt_text": "Measured perennial ice in 1993.",
                        "width": 2560,
                        "height": 1920,
                        "pixels": 4915200
                    }
                },
                {
                    "id": 370048,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 524851,
                        "url": "https://svs.gsfc.nasa.gov/vis/a000000/a002400/a002473/ice0220_web.jpg",
                        "filename": "ice0220_web.jpg",
                        "media_type": "Image",
                        "alt_text": "Measured perennial ice in 1993.",
                        "width": 320,
                        "height": 240,
                        "pixels": 76800
                    }
                },
                {
                    "id": 370049,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 524852,
                        "url": "https://svs.gsfc.nasa.gov/vis/a000000/a002400/a002473/ice0220_thm.png",
                        "filename": "ice0220_thm.png",
                        "media_type": "Image",
                        "alt_text": "Measured perennial ice in 1993.",
                        "width": 80,
                        "height": 40,
                        "pixels": 3200
                    }
                },
                {
                    "id": 370050,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 524853,
                        "url": "https://svs.gsfc.nasa.gov/vis/a000000/a002400/a002473/ice0220_web_searchweb.jpg",
                        "filename": "ice0220_web_searchweb.jpg",
                        "media_type": "Image",
                        "alt_text": "Measured perennial ice in 1993.",
                        "width": 320,
                        "height": 180,
                        "pixels": 57600
                    }
                },
                {
                    "id": 370047,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 524850,
                        "url": "https://svs.gsfc.nasa.gov/vis/a000000/a002400/a002473/ice0220.tif",
                        "filename": "ice0220.tif",
                        "media_type": "Image",
                        "alt_text": "Measured perennial ice in 1993.",
                        "width": 2560,
                        "height": 1920,
                        "pixels": 4915200
                    }
                }
            ],
            "extra_data": {}
        },
        {
            "id": 361903,
            "url": "https://svs.gsfc.nasa.gov/2473/#media_group_361903",
            "widget": "Single image",
            "title": "",
            "caption": "",
            "description": "Measured perennial ice in 2001.",
            "items": [
                {
                    "id": 370054,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 524857,
                        "url": "https://svs.gsfc.nasa.gov/vis/a000000/a002400/a002473/ice0331.jpg",
                        "filename": "ice0331.jpg",
                        "media_type": "Image",
                        "alt_text": "Measured perennial ice in 2001.",
                        "width": 2560,
                        "height": 1920,
                        "pixels": 4915200
                    }
                },
                {
                    "id": 370053,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 524856,
                        "url": "https://svs.gsfc.nasa.gov/vis/a000000/a002400/a002473/ice0331_web.jpg",
                        "filename": "ice0331_web.jpg",
                        "media_type": "Image",
                        "alt_text": "Measured perennial ice in 2001.",
                        "width": 320,
                        "height": 240,
                        "pixels": 76800
                    }
                },
                {
                    "id": 370052,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 524855,
                        "url": "https://svs.gsfc.nasa.gov/vis/a000000/a002400/a002473/ice0331.tif",
                        "filename": "ice0331.tif",
                        "media_type": "Image",
                        "alt_text": "Measured perennial ice in 2001.",
                        "width": 2560,
                        "height": 1920,
                        "pixels": 4915200
                    }
                }
            ],
            "extra_data": {}
        },
        {
            "id": 361904,
            "url": "https://svs.gsfc.nasa.gov/2473/#media_group_361904",
            "widget": "Single image",
            "title": "",
            "caption": "",
            "description": "Video slate image reads \"Perennial Ice Cover: The Data (1978-2001) <p><p>A view of the arctic perennial ice cover from 1978 to 2001. The rate of decline averages 9 percent per decade.\"",
            "items": [
                {
                    "id": 370055,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 524858,
                        "url": "https://svs.gsfc.nasa.gov/vis/a000000/a002400/a002473/a002473_slate.jpg",
                        "filename": "a002473_slate.jpg",
                        "media_type": "Image",
                        "alt_text": "Video slate image reads \"Perennial Ice Cover: The Data (1978-2001) A view of the arctic perennial ice cover from 1978 to 2001. The rate of decline averages 9 percent per decade.\"",
                        "width": 720,
                        "height": 528,
                        "pixels": 380160
                    }
                },
                {
                    "id": 370056,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 524859,
                        "url": "https://svs.gsfc.nasa.gov/vis/a000000/a002400/a002473/a002473_slate_web.png",
                        "filename": "a002473_slate_web.png",
                        "media_type": "Image",
                        "alt_text": "Video slate image reads \"Perennial Ice Cover: The Data (1978-2001) A view of the arctic perennial ice cover from 1978 to 2001. The rate of decline averages 9 percent per decade.\"",
                        "width": 320,
                        "height": 234,
                        "pixels": 74880
                    }
                }
            ],
            "extra_data": {}
        }
    ],
    "studio": "svs",
    "funding_sources": [
        "SVS"
    ],
    "credits": [
        {
            "role": "Animator",
            "people": [
                {
                    "name": "Tom Bridgman",
                    "employer": "Global Science and Technology, Inc."
                }
            ]
        },
        {
            "role": "Scientist",
            "people": [
                {
                    "name": "Josefino Comiso",
                    "employer": "NASA/GSFC"
                }
            ]
        }
    ],
    "missions": [],
    "series": [
        "Perennial Ice Cover"
    ],
    "tapes": [],
    "papers": [
        "Comiso, J.C., Correlation and trend studies of the sea ice cover and surface temperatures in the Arctic, Annals of Glaciology, Volume 34, (In press, July 2002)",
        "Comiso, J.C., Correlation and trend studies of the sea ice cover and surface temperatures in the Arctic, Annals of Glaciology, Volume 34, (In press, July 2002)"
    ],
    "datasets": [
        {
            "name": "",
            "common_name": "",
            "platform": "DMSP",
            "sensor": "SSM/I",
            "type": "Other",
            "organizations": [],
            "description": "Defense Meteorological Satellite Program Special Sensor Microwave Imager",
            "credit": "",
            "url": "",
            "date_range": "1987-2001"
        },
        {
            "name": "",
            "common_name": "",
            "platform": "Nimbus-7",
            "sensor": "SMMR",
            "type": "Other",
            "organizations": [],
            "description": "",
            "credit": "",
            "url": "",
            "date_range": "1978-1987"
        }
    ],
    "nasa_science_categories": [
        "Earth"
    ],
    "keywords": [
        "Arctic",
        "Climatology",
        "Cryology",
        "Ice",
        "Location",
        "Perennial Ice"
    ],
    "recommended_pages": [],
    "related": [],
    "sources": [],
    "products": [],
    "newer_versions": [],
    "older_versions": [],
    "alternate_versions": []
}