This directory contains most recent 4km global daily snow and ice maps
produced with the Global Multisensor Automated Snow and Ice (GMASI) algorithm.
The dataset includes binary map files at full (4 km) resolution and corresponding
reduced resolution (browse) images. This dataset is supposed to be updated on a daily basis,
however only occasional quality control of the derived products is perfromed. 

The full archive of daily snow and ice cover maps since mid-1987 is available here: 

https://www.star.nesdis.noaa.gov/pub/smcd/emb/snow/gmasi_reprocessing/dailymaps/

or ftp ftp.star.nesdis.noaa.gov
cd /pub/smcd/emb/snow/gmasi_reprocessing/dailymaps/

Contact for questions, comments, inquiries: peter.romanov@noaa.gov