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Polar Pathfinder FCDR

Configuration Item ID: 01B-24a

The Polar Pathfinder Fundamental Climate Data Record (FCDR) is made up of the following variables and components:

  • Calibrated and navigated reflectances and brightness temperatures from Advanced Very High Resolution Radiometer (AVHRR) and Visible Infrared Imaging Radiometer Suite (VIIRS) channel data
  • Viewing and illumination geometry, which includes sensor scan angle, solar zenith angle, and sun-sensor relative azimuth angle
  • Universal Coordinated Time (UTC) data acquisition data
  • A surface type mask

The data are composites of up to 23 orbits on a 5km Equal-Area Scalable Earth (EASE)-grid generated twice daily over both poles (Arctic and Antarctic) from 1982–present. The daily composites are centered on local solar times of 14:00 (high sun, but could be nighttime for some polar areas in winter) and 04:00 for the Arctic or 02:00 for the Antarctic. The dataset covers the north polar region (Arctic) from 48.4 degrees northward, and the south polar region (Antarctic) from -53.2 degrees southward.

To help the project receive continued support, updates, and improvement, tell us how you use Polar Pathfinder FCDR data by completing our optional User Registration Form. 

 Optional User Registration

Principal Investigator

Jeffrey Key, University of Wisconsin


Cite dataset when used as a source. See dataset's landing page for citation details at doi: 10.25921/X2X1-JR34.

Data Access