AutoSnow - Daily Ice and Surface Cover
GMASI utilizes data from various satellite sensors in visible, infrared, and microwave bands to create daily global snow and ice maps. The system includes MetOp-B/C AVHRR, GPM GMI, GCOM-W1 AMSR2, and GOSAT-GW AMSR3. These 2-km resolution maps cover the entire globe on a 9000 x 18000 grid and are provided in NetCDF and GRIB2 formats. Daily snow and ice maps are archived at NCEI/CLASS for public access.
POES | Resolution: 2km | Frequency: Daily
Microwave Snow and Ice Products
GAASP snow and sea Ice products are derived from the AMSR2 microwave sensor (with AMSR3 planned for the future) aboard the Japan Aerospace Exploration Agency (JAXA) GCOM satellite series. The snow product suite includes Snow Cover (SC), Snow Depth (SD), and Snow Water Equivalent (SWE). The sea ice product is a 24-hour composite of Sea Ice Concentration (SIC) over the Arctic and Antarctic regions. Products are distributed in NetCDF format and have been archived at the NCEI/CLASS since 2016.
POES | Resolution: 10 km | Frequency: ~100 minutes
VIIRS Snow and Ice Products
VIIRS snow and ice products are derived from the Vis/IR channel data from VIIRS instruments on the Joint Polar Satellite System (JPSS) series, including SNPP, NOAA-20, and NOAA-21. The product suite includes Binary Snow Mask, Snow Fraction, Ice Surface Temperature, Ice Concentration, Ice Thickness, and Ice Age. Snow products are generated at VIIRS I-band resolution (375m), while ice products are generated at M-band resolution (750m). The products are provided in NetCDF format and have been archived at NECI/CLASS since 2018.
POES | Resolution: 350m/750m | Frequency: 86 seconds