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    "title": "Chameleon Earth",
    "description": "Satellites have the unique ability to observe Earth's many dynamic features in motion. Precise, calibrated instruments capture the movement of clouds swirling across continents and the regenerative sprouting of vegetation on land. Peering beneath the ocean surface, these same satellites are able to discern the invisible boundary between areas of warm and cold water and locations teeming with microscopic life. The visualization below explores these features and many others through multiple layers of satellite data collected in the Northern Hemisphere over various time periods and played at different speeds. First, clouds move across North America over 12 days. Then, with the clouds removed and the visualization moving faster, snow and ice cover creep from the Arctic and parts of Canada into the United States over approximately three months. Panning south, a golden mass of warm ocean water trails across the Atlantic. As the visualization speeds up, nearly four years of phytoplankton blooms represented by vibrant shades of green, yellow and red along the west coast of Africa are shown as well as the seasonal greening and browning of vegetation across Europe. || ",
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        {
            "id": 3383,
            "url": "https://svs.gsfc.nasa.gov/3383/",
            "page_type": "Visualization",
            "title": "Sequence of Clouds, Snow Cover, Sea Ice, Sea Surface Temperature and Biosphere",
            "description": "This animation is part of an NSF-funded, international project, Exploring Time. The two-hour television special, broadcast on the Discovery Channel in the spring of 2007, explores how the world changes over different timescales ... from billionths of seconds to billions of years. This animation portrays a variety of remotely sensed data elements at different temporal resolutions.Initially, the animation shows cloud cover in motion over North America in half-hour increments from Nov. 26 to Dec. 7, 2005. The temporal pace quickens to show a 5-day moving average of daily MODIS snow cover along with daily AMSR-E sea ice from Dec. 7, 2005 to Mar. 15, 2006. As the view swings south over the Gulf of Mexico, the AMSR-E Sea Surface Temperature reveals warming ocean temperatures from March through August, 2006. As it passes over the Atlantic Ocean, the biosphere fades into view, showing both chlorophyll concentration in the ocean along with Normalized Difference Vegetation Index over the land areas. The biosphere animates over time while the view pans over northern Africa and Europe, showing data collected from September 2002 through February 2006.This program was also broadcast in Japan through a partnership with the NHK international broadcasting service and in France through a partnership with the ARTE television network. || ",
            "release_date": "2007-03-17T12:00:00-04:00",
            "update_date": "2023-05-03T13:55:43.847293-04:00",
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                "media_type": "Image",
                "alt_text": "This animation shows snow cover, sea ice, clouds, sea surface temperature and biosphere while the view moves from North America across the Atlantic Ocean to Northern Africa and Europe.",
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