Arctic
Antarctic
Surface Temperature
NCEP/NCAR Surface Temperature reanalysis. Mean temperature of last 5 available days
under construction
Freezing Degree Days
The graphs show the Freezing Degree days over the whole freezing season.
The sea ice thickness can be estimated based on the following formula (Lebedev 1938)
Thickness (cm) = 1.33 * FDD (°C)^0.58
Data used
Kalnay et al.,The NCEP/NCAR 40-year reanalysis project, Bull. Amer. Meteor. Soc., 77, 437-470, 1996.; https://psl.noaa.gov/data/gridded/data.ncep.reanalysis.html