Tools

NSIDC provides software tools to extract and geolocate data in a polar stereographic projection derived from passive microwave instruments, as well as masking tools that limit the influence of weather effects on sea ice concentrations. All tools are available by FTP. The tools are broken down into the following categories:

• Data Extraction Tools: The data extraction tools allow the user to extract and read the data from the data files.
   
• Data Display Tools: The data display tools allow the user to display data from the data files in various ways.
   
• Geocoordinate and Pixel-Area Tools: The Geocoordinate tools allow the user to obtain latitude/longitude coordinates from (i,j) coordinates and vice versa. The pixel-area tools allow the user to obtain the area of a given pixel.
   
• Masks & Overlays: NSIDC provides land, region, and ocean masks and overlays that can be applied to the polar stereographic data files.

The tools work with the polar stereographic gridded passive microwave data sets at NSIDC. For a complete list of these data sets, see the Polar Stereo Data Summaries Web Page.