With the Arctic Weekly Hemispheric Analysis change for all First Year Ice to Egg Code 6, the codes are defined as follows:
World Meteorological Organization Standard Thickness References
Egg Code 6 is First Year Ice (>30 cm)
Egg Code 7 is Thin First Year Ice (30 - 70 cm)
Egg Code 1-Dot is Medium First Year Ice (70-120cm)
Egg Code 4-Dot is Thick First Year Ice (>120 cm)
Arctic Sea Ice at Minimum Extent - 2021
Newly named iceberg, Iceberg A-78, calves from Jelbart Ice Shelf.
IMS data will now be available in NetCDF format for 1km and 4km grids
Newly named iceberg, Iceberg A-77, calves from Ekstrom Ice Shelf.
Added IMS Conference Materials to IMS Information resource page. Take a look.
The 2021 maximum Arctic sea ice extent occurred on 10 March 2021.
Antarctic ice shelf is available in GIS shapefile format.
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