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  1. 26 de jul. de 2022 · Earths polar oceans are covered by stretches of ice that freezes and melts with the seasons and moves with the wind and ocean currents.During the autumn and winter, the sea ice grows until it reaches an annual maximum extent, and then melts back to an annual minimum at the end of summer.

  2. www.earthdata.nasa.gov › topics › cryosphereSea Ice | Earthdata

    Sea Ice. Find Data. Pertaining to the study of frozen seawater over the ocean surface. Definition source: National Aeronautics and Space Administration. Sub-Topics. Ice Depth/Thickness |. Ice Extent |. Ice Growth/Melt |. Ice Temperature |. Icebergs |. Pack Ice |. Polynyas |. Reflectance |. Salinity |. Sea Ice Age |. Sea Ice Elevation |.

  3. Hace 5 días · Color-coded map of the daily sea ice concentration in the Northern Hemisphere for the indicated recent date along with the contours of the 15% edge during the years with the least extent of ice (in red) and the greatest extent of ice (in orange) during the period from November 1978 to the present.

  4. 18 de feb. de 2020 · Layers of frozen seawater cap the Arctic Ocean. This sea ice grows dramatically each winter, usually reaching its maximum in March. It melts just as dramatically each summer, reaching its minimum in September. It is a natural fluctuation that has been going on for thousands of years, but winter and summer trends have become negative ...

  5. Access the maps and data. The maps and graphs presented in the monthly summaries of sea-ice are based on pre-release data from ECMWF's ERA-Interim reanalysis of observations from 1979 to the present. They are subject to change should a significant production problem be found to have occurred.

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  7. 19 de oct. de 2022 · Waters cooled below freezing point adjacent to Cape Darnley, Antarctica generate subsurface ice and produce dense waters that flood the global ocean abyss. Underwater ice boosts production of the world oceans densest waters | Science Advances