|This site is intended to better study short term events like melt ponds, storms or quick refreezing.|
NSIDC Area is calculated as the sum of all pixels with sea ice concentration between 15% and 100%. Pixel area is considered in the calculation. Lake ice is ignored to reduce noise from coastlines. The current year is calculated from Near Real-Time Data and previous years from Final Data.
More details about Sea ice Area can be found under: Documentation
lowest minimum = 2.241 (2012)
2nd lowest minimum = 2.401 (2016)
lowest maximum = 12.668 (2016)
2nd lowest maximum = 13.080 (2007)
Note: The anomaly is calculated against the 2007-2016 average.
|Full year graph|| |
|A lower compaction ratio during the melting season indicates a higher melt rate. During the freezing season a low compaction ratio indicates lots of new thin ice.|
A more detailed description with images is available under Documentation.
| |NSIDC Data
Cavalieri, D., C. Parkinson, P. Gloersen, and H. J. Zwally. 1996, updated yearly. Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data, Version 1. [indicate subset used]. Boulder, Colorado USA: NASA DAAC at the National Snow and Ice Data Center.http://dx.doi.org/10.5067/8GQ8LZQVL0VL.