CALIPSO Lidar Description and Performance Assessment

Author:

Hunt William H.1,Winker David M.2,Vaughan Mark A.2,Powell Kathleen A.2,Lucker Patricia L.1,Weimer Carl3

Affiliation:

1. Science Systems and Applications, Inc., Hampton, Virginia

2. National Aeronautics and Space Administration, Hampton, Virginia

3. Ball Aerospace and Technology Corporation, Boulder, Colorado

Abstract

Abstract This paper provides background material for a collection of Cloud–Aerosol Lidar with Orthogonal Polarization (CALIOP) algorithm papers that are to be published in the Journal of Atmospheric and Oceanic Technology. It provides a brief description of the design and performance of CALIOP, a three-channel elastic backscatter lidar on the Cloud–Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) satellite. After more than 2 yr of on-orbit operation, CALIOP performance continues to be excellent in the key areas of laser energy, signal-to-noise ratio, polarization sensitivity, and overall long-term stability, and the instrument continues to produce high-quality data products. There are, however, some areas where performance has been less than ideal. These include short-term changes in the calibration coefficients at both wavelengths as the satellite passes between dark and sunlight, some radiation-induced effects on both the detectors and the laser when passing through the South Atlantic Anomaly, and slow transient recovery on the 532-nm channels. Although these issues require some special treatment in data analysis, they do not seriously detract from the overall quality of the level 2 data products.

Publisher

American Meteorological Society

Subject

Atmospheric Science,Ocean Engineering

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