Data Set ID:

AVHRR Polar Pathfinder Twice-Daily 5 km EASE-Grid Composites, Version 3

NOTE: This data set is retired and no longer available for download, due to errors in the data. It has been superseded by the AVHRR Polar Pathfinder (APP) data set available at:

The following information is provided for provenance:
The Advanced Very High Resolution Radiometer (AVHRR) Polar Pathfinder Twice-Daily 5 km EASE-Grid Composites are a collection of products for both poles, consisting of twice-daily calibrated and gridded satellite channel data and derived parameters. Data include five AVHRR channels, clear sky surface broadband albedo and skin temperature, solar zenith angle, satellite elevation angle, sun-satellite relative azimuth angle, surface type mask, cloud mask, and Universal Coordinated Time (UTC) of acquisition. AVHRR Polar Pathfinder data extend pole ward from 48.4 degrees north and 53.2 degrees south latitudes, from 24 July 1981 through 30 June 2005. Data are in 1-byte and 2-byte integer grid format and are available by FTP.

  • Atmospheric Radiation > Albedo > ALBEDO
  • Snow/Ice > Albedo > ALBEDO
  • Surface Radiative Properties > Albedo > ALBEDO
  • Infrared Wavelengths > Brightness Temperature > BRIGHTNESS TEMPERATURE
  • Clouds > Cloud Amount/Frequency
  • Infrared Wavelengths > Infrared Radiance > INFRARED RADIANCE
  • Land Temperature > Land Surface Temperature > LAND SURFACE TEMPERATURE
  • Land Temperature > Skin Temperature > SKIN TEMPERATURE
  • Infrared Wavelengths > Thermal Infrared > THERMAL INFRARED
  • Surface Radiative Properties > Thermal Properties > THERMAL PROPERTIES
  • Platform Characteristics > Viewing Geometry > VIEWING GEOMETRY
Data Format(s):
  • Binary
Spatial Coverage:
N: -53.2, 
N: 90, 
S: -90, 
S: 48.4, 
E: 180, 
E: 180, 
W: -180
W: -180
Platform(s):NOAA-11, NOAA-14, NOAA-16, NOAA-7, NOAA-9
Spatial Resolution:
  • 5 km x 5 km
Temporal Coverage:
  • 24 July 1981 to 30 June 2005
Temporal Resolution12 hourMetadata XML:View Metadata Record
Data Contributor(s):Jeffrey Key, Jim Maslanik, Ted Scambos, William Emery, Chuck Fowler, Terry Haran

Geographic Coverage

No access options.

As a condition of using these data, you must cite the use of this data set using the following citation. For more information, see our Use and Copyright Web page.

W. Emery, C. Fowler, T. Haran, J. Key, J. Maslanik, T. Scambos 2000. AVHRR Polar Pathfinder Twice-Daily 5 km EASE-Grid Composites, Version 3. [Indicate subset used]. Boulder, Colorado USA. NSIDC: National Snow and Ice Data Center. doi: [Date Accessed].

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No technical references available for this data set.

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