MODIS/Aqua Sea Ice Extent 5-Min L2 Swath 1km, Version 5
MODIS/Aqua Sea Ice Extent 5-Min L2 Swath 1km (MYD29) data set contains fields for sea ice by reflectance, sea ice by reflectance pixel Quality Assessment (QA), Ice Surface Temperature (IST), IST pixel QA, latitudes, and longitudes in compressed Hierarchical Data Format-Earth Observing System (HDF-EOS) format, along with corresponding metadata. Latitude and longitude geolocation fields are at 5 km resolution, while all other fields are at 1 km resolution. The sea ice algorithm uses a Normalized Difference Snow Index (NDSI) modified for sea ice to distinguish sea ice from open ocean based on reflective characteristics. MODIS/Aqua Version 5 (V005) data extend from 4 July 2002 to present; however, until reprocessing is complete in mid-2008 not all V005 data will be available. Data are available by FTP, CD-ROM, DVD, or DLT. Data can be obtained in GeoTIFF format by ordering the data through the Data Pool. Until the reprocessing campaign is finished, the complete set of Version 4 (V004) data will remain available. Thus, if you need V004 documentation, please contact the National Snow and Ice Data Center (NSIDC) User Services at http://nsidc.org/forms/contact.html.
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