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You are here: Home / Data and maps / Maps and graphs / Average extent of arctic sea ice in March and September 1979-2007

Average extent of arctic sea ice in March and September 1979-2007

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Created : Nov 12, 2009 Published : Oct 23, 2008 Last modified : Nov 29, 2012 11:38 AM

Topics: Climate change ,

Arctic sea ice grows to its greatest yearly size in March and melts to its lowest size in September

This is the latest published version. .

http://www.eea.europa.eu/data-and-maps/figures/average-extent-of-arctic-sea-ice-in-march-and-september-1979-2007/figure-5-14-climate-change-2008-ice-extent.eps/image_original

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Metadata

Last upload:

30 Sep 2008

Dynamic

Temporal coverage:

1979-2007

Tags:

CLIM2008 | climate change | Arctic | ice | CLIM010 | sea

Geographical coverage:

[+] Show Map

Arctic

Rights:

Access is managed by the owner mentioned below. Please contact the owner for more information about their data policy.

Owners:

National Snow and Ice Data Center (NSIDC)

Permalink to this version: 52ABF0B7-064F-49C8-BC78-C09AEAB2492D
Permalink to latest version: 43E7B0A2-B8A9-4DDF-BB14-AB918FC7C50F

Figure type:

Graph

Additional information

The figure shows the average ice extents for these two months after 1979. The linear trend for March indicates that the Arctic is losing an average of 44 000 km2 of ice per year in winter. The corresponding value for September and summer is 72 000 km2.

Geographical coverage: Arctic and the North pole

Related content

Used in indicators

Data references

Sea ice index The Sea Ice Index provides a quick look at sea ice changes in spatial and historical context and gives a consistent, up-to-date source of sea ice extent and sea ice concentration values and images. The NSIDC Near-Real-Time DMSP SSM/I Daily Polar Gridded Sea Ice Concentrations and the Sea Ice Concentrations from Nimbus-7 SSMR and DMSP SSM/I Passive Microwave Data data sets are used to generate the monthly records of sea ice extent and sea ice concentration for the Arctic and Antarctica from satellite passive microwave data. Data files tabulate monthly mean extent and area, in millions of square kilometers, by year for a given month. Plots of monthly sea ice extent anomalies with trend lines and significance intervals are available. Monthly images show sea ice extent (with an outline of the median extent for that month for comparison), sea ice concentration, trends in sea ice concentration, and anomalies in sea ice concentration. Anomalies and median extent are calculated using a reference period of 1979 through 2000.

Used in publications

Impacts of Europe's changing climate - 2008 indicator-based assessment

Impacts of Europe's changing climate - 2008 indicator-based assessment

Document Actions

Filed under: CLIM2008, climate change, Arctic, ice, CLIM010, sea

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