2002-2003 Science Planning Summary

Oceans & Climate

Dr. Bernhard Lettau
Program Manager

OO-213-M

Station: Not based at a station
Research Site(s): Dome C with the Italian/French Program

Work at Dome C through NASA and the Italian/French program
Dr. Von Walden
University of Idaho
Department of Geography
Dr. Robert Stone
National Oceanic and Atmospheric Administration

Deploying Team Members: Bradley C Halter . Robert Stone . Von P Walden
Research Objectives: The Antarctic Plateau is an ideal ground site for calibrating and validating infrared satellite instruments. In terms of surface temperature and emissivity, the large continental ice sheet is one of the most homogeneous land surfaces on Earth. Ground-based measurements of upwelling infrared radiation between 8 and 12 micrometers are very nearly equal to those measured by satellites because of the minimal atmospheric emission and absorption found on the antarctic plateau. Therefore, accurate measurements of spectral infrared radiance made at the surface there can provide data to validate the National Aeronautics and Space Administrationís Atmospheric Infrared Sounder (AIRS).

Field Season Overview:
Research operations for this group will occurr primarily on the continental ice sheet, which is one of the most homogeneous land surfaces on earth in terms of surface temperature and emissivity. These characteristics make the Antarctic Plateau an ideal ground site for calibration and validation of infrared satellite instruments.

Researchers will conduct a field program at Dome Concordia (Dome C) that will measure upwelling (from the surface) and downwelling (from the atmosphere) spectral infrared radiances using the Polar Atmospheric Emitted Radiance Interferometer (PAERI).

The research team will use a high-precision GPS and a theodolite. The theodolite will be used to flag various horizontal angles around the research tower for orientation of the PAERI. Project team members will be working at the same remote sensing site near Dome C as Dr. Steve Warren's group (OO-201-O) and are coordinating research activities with that group.