An updated version of daily maps of classified Arctic sea ice with first-year (FY) or multi-year (MY) classifications derived from QuikSCAT data for years 1999-2009. Improvements on the previous QuikSCAT ice classifications include the addition of classification data from 1999 to 2002 and corrections to reduce misclassified MY ice in the marginal ice zone.

This version is accompanied by a dataset of OSCAT ice age classifications for years 2009-2014 which can be found here.

The product is generated on standard SCP polar stereographic grid for the Arc region coresponding to QuikSCAT egg (quev or queh) images. A detailed description of the data product can be found in the paper below. Note that the resolution of browse .gif images has been reduced by a factor of two. Data can be accessed from the ftp site and the web page.

This product is primarily designed to map MY ice. The ocean/sea ice edge is low resolution since it is determined from NASA Team ice concentration data (see reference). The flag values stored in the SIR array are:
-2 : no data
-1 : land
0 : ocean
1 : first year (FY) ice
2 : multi year (MY) ice

Reference:

D.B. Lindell and D.G. Long, "Multi-Year Arctic Sea Ice Classification Using OSCAT and QuikSCAT", IEEE Transactions on Geoscience and Remote Sensing, 2015.