Because of maintenance work at the JAXA data portal, the AMSR2 data from 18 to 20 August will be delayed until 21 August. Therefore, the sea ice concentration  maps shown here are from 17 August. We expect to reprocess the missing data on 21 August.
However, similar data (sea ice concentration of the Arctic and Antarctic, 3.125 km and 6.25 km gridding) based on the new sensor AMSR3, can be found here

• Time Series     • Regions     • Minima     • Animations

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).

Click to enlarge the image (~500 KB). False color sea ice map.

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).

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.