Arctic Sea Ice Freeze Onsest

<p>The product contains yearly maps of early freeze onset and freeze onset for the sea ice surface based on the improved&nbsp;PMW algorithm.</p> <p>The data were derived using brightness temperature observations from the Advanced Microwave Scanning Radiometer-Earth Observing System (AMSR-E) and the Advanced Microwave Scanning Radiometer 2 (AMSR2), Sea Ice Concentration (SIC) observations using the Enhanced NASA Team (NT2) algorithm, and sea ice age dataset.</p> <p>They are gridded on the NSIDC northern hemisphere polar stereographic grid at 12.5 km, with a time range of 2003 to 2021 (2011 and 2012 missing).</p>