Stats Maps N Pix Arctic Sea Ice 1978 2015 The media archive contains videos of events, conferences and other interesting subjects related to the arctic. media archive arctic portal arctic sea ice age and extent from 1978 to 2015 intranet. The arctic report card: update for 2020 reports that, in march 1985, "old" sea ice (more than four years old) comprised 33 percent of the sea ice cover in the arctic ocean. in march 2020, similarly old ice comprised just 4.4 percent of the arctic ocean sea ice cover. in march 1985, old ice covered 2.70 million square kilometers.
Arctic Sea Ice Age And Extent From 1978 To 2015 Youtube Sea ice index daily and monthly image viewer. The sea ice index provides a quick look at arctic and antarctic wide changes in sea ice. it is a source for consistent, up to date sea ice extent and concentration images, in png format, and data values, in geotiff and ascii text files, from november 1978 to the present. sea ice index images also depict trends and anomalies in ice cover. Arctic sea ice extents set 93 monthly 11 yearly record lows post 1986, 0 record highs. highs dominated antarctic sea ice extent records until 2016, followed by lows. since 2015, global sea ice extents have set new monthly record lows for all 12 months. during 1979–2020, arctic september sea ice extents varied 53%, march extents only 12%. The sea ice area for the arctic shows near record minimums since 2002. the maps below show the areas for september (shaded) relative to the median extent (purple line). the median extent is based on the period 1981 2010. the recent years represent a unique event because they show a year to year persistence of minimum ice extents (graph below).
Arctic Sea Ice Age And Extent From 1978 To Septembre 2015 Arctic sea ice extents set 93 monthly 11 yearly record lows post 1986, 0 record highs. highs dominated antarctic sea ice extent records until 2016, followed by lows. since 2015, global sea ice extents have set new monthly record lows for all 12 months. during 1979–2020, arctic september sea ice extents varied 53%, march extents only 12%. The sea ice area for the arctic shows near record minimums since 2002. the maps below show the areas for september (shaded) relative to the median extent (purple line). the median extent is based on the period 1981 2010. the recent years represent a unique event because they show a year to year persistence of minimum ice extents (graph below). Sea ice extent, defined as the total area covered by ice of at least 15% concentration, is a common metric to assess seasonal and long term changes in arctic sea ice. starting in 1979, there is now a 44 year record of ice extent derived from a consistent series of satellite borne passive microwave sensors. arctic sea ice undergoes a typical. A: colors show the age of sea ice floating in the arctic ocean. the darkest blue areas on the map show seasonal or first year ice, which formed during the most recent winter. white areas show where ice is more than four years old. ice thickness is strongly correlated with ice age. first year ice ranges from 4 to 12 inches (10 to 30 centimeters.
Arctic Sea Ice Age And Min Max Median 1979 2015 Youtube Sea ice extent, defined as the total area covered by ice of at least 15% concentration, is a common metric to assess seasonal and long term changes in arctic sea ice. starting in 1979, there is now a 44 year record of ice extent derived from a consistent series of satellite borne passive microwave sensors. arctic sea ice undergoes a typical. A: colors show the age of sea ice floating in the arctic ocean. the darkest blue areas on the map show seasonal or first year ice, which formed during the most recent winter. white areas show where ice is more than four years old. ice thickness is strongly correlated with ice age. first year ice ranges from 4 to 12 inches (10 to 30 centimeters.
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