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Data Set ID:
NSIDC-0066

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

This data set is no longer available due to errors in the data. See the Error Sources section of the data set documentation for details.

NSIDC recommends using the AVHRR Polar Pathfinder (APP) data set instead.

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.

Geographic Coverage

Spatial Coverage:
  • N: -53.2, S: -90, E: 180, W: -180

  • N: 90, S: 48.4, E: 180, W: -180

Spatial Resolution:
  • 5 km x 5 km
Temporal Coverage:
  • 24 July 1981 to 30 June 2005
Temporal Resolution: 12 hour
Parameter(s):
  • Atmospheric Radiation > Albedo
  • Snow/Ice > Albedo
  • Surface Radiative Properties > Albedo
  • Infrared Wavelengths > Brightness Temperature
  • Clouds > Cloud Amount/Frequency
  • Infrared Wavelengths > Infrared Radiance
  • Land Temperature > Land Surface Temperature
  • Land Temperature > Skin Temperature
  • Infrared Wavelengths > Thermal Infrared
  • Surface Radiative Properties > Thermal Properties
  • Platform Characteristics > Viewing Geometry
Platform(s) NOAA-11, NOAA-14, NOAA-16, NOAA-7, NOAA-9
Sensor(s): AVHRR, RADIOMETERS
Data Format(s):
  • Binary
Version: V3
Data Contributor(s): Jeffrey Key, Jim Maslanik, Ted Scambos, William Emery, Chuck Fowler, Terry Haran
Please contact the data provider for the correct Data Citation for this data set.