Intermittent service disruptions from Feb 23 until March 13

Because of infrastructure works on which we have no influence, there will be several service disruptions between Monday, 23 February and Friday, 13 March. The exact timing is not fixed yet,

The disruptions can last from a few hours up to several days. During these times, this webpage will still be online, but without access to the data archive, and without daily updates. We will try to process missed data between service disruptions, whenever services are back.

We regret the inconvenience.

• Time Series     • Regions     • Minima     • Animations

Arctic sea ice concentration

Arctic sea ice concentration
Click to enlarge the image (~1.2 MB).

Sea ice map calculated from AMSR2 data using the ARTIST sea ice algorithm (ASI 5).
Arctic sea ice concentration (different color code)
Click to enlarge the image (~500 KB).

False color sea ice map.

Antarctic sea ice concentration

Antarctic sea ice concentration
Click to enlarge the image (~500 KB).

Sea ice map calculated from AMSR2 data using the ARTIST sea ice algorithm (ASI 5).
Arctic sea ice concentration (different color code)
Click to enlarge the image (~300 KB).

False color sea ice map.

More maps and information about sea ice minima can be found under Arctic Sea Ice Minima.

Data archive, citation and contact

Data archive

All data can be found in the Data Archive. To quickly browse the dataset, please have a look at the Data Browser.

How to cite

Please help maintaining this service by properly citing and acknowledging if you use the data for publications:
Spreen, G., L. Kaleschke, and G.Heygster (2008), Sea ice remote sensing using AMSR-E 89 GHz channels J. Geophys. Res.,vol. 113, C02S03, doi:10.1029/2005JC003384.

The data from years 2002-2018 are also available at the data publisher PANGAEA, one data set each for Arctic and Antarctic, AMSR-E-based and AMSR2-based:

Melsheimer, Christian, Spreen, Gunnar (2020): AMSR-E ASI sea ice concentration data, Arctic, version 5.4 (NetCDF) (June 2002 - September 2011). PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.919777 

Melsheimer, Christian; Spreen, Gunnar (2020): AMSR-E ASI sea ice concentration data, Antarctic, version 5.4 (NetCDF) (June 2002 - September 2011). PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.919778

Melsheimer, Christian; Spreen, Gunnar (2019): AMSR2 ASI sea ice concentration data, Arctic, version 5.4 (NetCDF) (July 2012 - December 2018). PANGAEA, https://doi.org/10.1594/PANGAEA.898399

Melsheimer, Christian; Spreen, Gunnar (2019): AMSR2 ASI sea ice concentration data, Antarctic, version 5.4 (NetCDF) (July 2012 - December 2018). PANGAEA, https://doi.org/10.1594/PANGAEA.898400 

Contact

For questions regarding the data please contact Gunnar Spreen or Christian Melsheimer

Institute of Environmental Physics, University of Bremen, Germany.