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The Multisensor Analyzed Sea Ice Extent – Northern Hemisphere
(MASIE-NH) products provide measurements of daily sea ice extent and
sea ice edge boundary for the Northern Hemisphere and 16 Arctic regions
in a polar stereographic projection. Products include an ASCII text
file of sea ice extent values in square km over the entire Northern
Hemisphere with 16 separate Arctic regions identified, time series
plots of the 16 regions, and image files that visually show where the
sea ice is. The MASIE-NH imagery are provided at a nominal 4 km
resolution. The input data comes from the 4 km Interactive Multisensor
Snow and Ice Mapping System (IMS) snow and ice product produced by the
National Ice Center (NIC). NIC utilizes visible imagery, passive
microwave data, and NIC weekly analysis products to create their data
product. The MASIE-NH products are distributed in a number of formats
including ASCII text, GeoTIFF, PNG, shapefiles, and Google Earth files
and are available for the previous four weeks (28 days). The most
recent days worth of imagery plus the ASCII text data file are provided
via the MASIE Web site. An archive of the previous four weeks of
imagery can be obtained via FTP.
Layers in this dataset are based on combinations of the following options.
You may choose from these options to select a specific layer on the map page.
The Conservation Biology Institute (CBI) provides scientific expertise to support the conservation and recovery of biological diversity in its natural state through applied research, education, planning, and community service.