Time series of sea ice extent in the Arctic

External Data Reference
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Based on input data from the EUMETSAT OSI SAF reanalysis project, in which a consistent time series of daily, gridded data for sea ice concentration is made from the passive microwave sensors SMMR and SSM/I data, monthly aggregated sea ice products are generated by CryoClim (carried out by the Norwegian Meteorological Institute). The graph shows the sea ice extent (sea ice concentration with a 15% threshold) time series from 1979 until 2010 for the months March (sea ice maximum) and September (sea ice minimum). Linear trends are estimated. Data produced by the EUMETSAT OSI SAF (http://osisaf.met.no) and the CryoClim (http://www.cryoclim.net) project, delivered through MyOcean (http://www.myocean.eu).
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