113, C07004. Area, extent, volume, thickness, ocean, atmosphere. Sea Ice motion over the Arctic Basin. Total sea ice extent on the northern hemisphere during the past years, including climate mean; plus/minus 2 standard deviations. For news, data and comments go to the Arctic Sea Ice Blog; For discussions go to the Arctic Sea Ice Forum; Compare NSIDC extent graphs with the Browser Image Spreadsheet Tool (BIST); Searchable database for research documents: High North Research Documents ACSYS Historical Ice … Click image to animate. 2019 is shown in blue, 2018 in green, 2017 in orange, 2016 in brown, 2015 in purple, and 2012 in dotted brown. Global Sea Ice Reference Page: Arctic and Antarctic current graphs and imagery Shortlink for this page: (suitable for blog or Twitter comments) All images are displayed from either their sou…
The graph above shows Arctic sea ice extent as of October 31, 2019, along with daily ice extent data for four previous years and the record low year. During the 10 year period from 2008 to 2018 sea ice in the arctic appears to have stabilized but has not increased significantly. Arctic sea ice.
2019 was the third year since 2007 to record a volume increase under 2000 km3. While sea ice thickness observations are sparse, here we utilize the ocean and sea ice model, PIOMAS (Zhang and Rothrock, 2003), to visualize April sea ice thickness from 1979 to 2020. Monthly ice volume was 39% below the maximum in 1979 …
Evidence of the age of Arctic sea ice suggests that fewer patches of ice are persisting for multiple years (i.e., generally thick ice that has survived one or more melt seasons) (see Figure 2). The volume of sea ice is declining for the 15 year period according to the data cited here. Sea ice shows up as various shades of grey and open ocean as blue. These graphs show the total average volume of sea ice by year, not simply the volume of ice on 1/2 of each year. Each image is a snapshot of sea ice cover each day with the date shown in the lower part of each image. Climate models do predict that Antarctic sea ice will respond more slowly than Arctic sea ice to warming, but as temperatures continue to rise, a long-term decline is expected. Another month has passed and so here is the updated Arctic sea ice volume graph as calculated by the Pan-Arctic Ice Ocean Modeling and Assimilation System (PIOMAS) at the Polar Science Center: During October there was a slowdown in ice growth, which is also reflected in the PIOMAS numbers. The ice extent values are calculated from the ice type data from the Ocean and Sea Ice, Satellite Application Facility (), where areas with ice concentration higher than 15% are classified as ice. Normal Topic Hot Topic (More than 15 replies) Very Hot Topic (More than 25 replies) Locked Topic Sticky Topic Poll Trends in sea ice thickness/volume are another important indicator of Arctic climate change. Average Arctic sea ice volume in May 2020 was 21,500 km 3.This value is 1700 km 3 above the record minimum value of 19,800 km 3 set in 2017, making it the sixth lowest on record. References Cavalieri, D. J., and C. L. Parkinson (2008) Antarctic sea ice variability and trends, 1979–2006, Journal of Geophysical Research Oceans. May 2020 Monthly Update.
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