January 17, 2020
Mapped Arctic sea ice extent (SIE) on 15/1/2020 was 13.57 million km2 which is 560,000 km2 or 4% less than the 2008-2018 median. This is largest sea ice extent on this day since 2015.
The extent of Arctic sea ice varies from summer to winter. The sea ice extent shown here relies on data from the Multisensor Snow and Ice Mapping System (IMS) that runs at the National Ice Center. The IMS product uses several satellite data sources including passive microwave, but it is also based on visual analysis and other data sources and undergoes a form of manual data fusion. The data reported here has a 1 km resolution and was sourced from the National Snow and Ice Data Center