Grids that determine the longitude of a given pixel for the 6.25 km grids for either hemisphere (psn for the Northern Hemisphere and pss for the Southern Hemispere). Pss06lats_v3.dat: 1264 columns x 1328 rows, range = Psn06lats_v3.dat: 1216 columns x 1792 rows, range = Each array location (i, j) contains the latitude value at the center of the corresponding data grid cells. These latitude grids are in binary format and are stored as 4-byte integers (little endian) scaled by 100,000 (divide the stored value by 100,000 to get decimal degrees). Grids that determine the latitude of a given pixel for the 6.25 km grids for either hemisphere (psn for the Northern Hemisphere and pss for the Southern Hemisphere). They are called by locate.for thus, the user should compile these programs with locate.for, and then use locate to do the conversions. These programs need to be compiled but are not run explicitly. Subroutines that are associated with the Fortran executable, locate.for. This executable must be run with the subroutines mapll.for and mapxy.for.ĪMSR-E/Aqua Daily 元 6.25 km 89 GHz Brightness Temperature Polar GridsĪMSR-E/AMSR2 Daily 元 6.25 km 89 GHz Brightness Temperature Polar GridsĪMSR-E/AMSR2 Unified 元 Daily 25 km Brightness Temperatures & Sea Ice Concentration Polar Grids

Snow Melt Onset Over Arctic Sea Ice from SMMR and SSM/I-SSMIS Brightness TemperaturesĪMSR-E/Aqua Daily 元 12.5 km Brightness Temperature, Sea Ice Concentration, & Snow Depth Polar GridsĪMSR-E/Aqua Daily 元 25 km Brightness Temperature & Sea Ice Concentration Polar Gridsįortran executable that allows the user to enter an (i, j) coordinate, obtain the corresponding latitude/longitude coordinate, and vice versa. Near Real-Time DMSP SSM/I-SSMIS Daily Polar Gridded Brightness Temperatures Nimbus-5 ESMR Polar Gridded Brightness Temperaturesīootstrap Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Nimbus-5 ESMR Polar Gridded Sea Ice Concentrations The geocoordinate tools that are available are the following click on the links for more information about that tool:ĭMSP SSM/I-SSMIS Daily Polar Gridded Brightness Temperatures

The geocoordinate tools allow the user to obtain latitude/longitude coordinates from (i,j) coordinates and vice versa. They include Fortran routines for determining latitude and longitude from i,j coordinates and a pixel-area grid. The geocoordinate and pixel-area tools described here provide the same functionality for all polar stereographic passive microwave data sets at NSIDC.

Polar tools