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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 24 — Aug. 20, 1998
  • pp: 5550–5559

Lidar In-space Technology Experiment measurements of sea surface directional reflectance and the link to surface wind speed

Robert T. Menzies, David M. Tratt, and William H. Hunt  »View Author Affiliations


Applied Optics, Vol. 37, Issue 24, pp. 5550-5559 (1998)
http://dx.doi.org/10.1364/AO.37.005550


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Abstract

The dependence of sea surface directional reflectance on surface wind stress suggests a method for deriving surface wind speed from space-based lidar measurements of sea surface backscatter. In particular, lidar measurements in the nadir angle range from 10° to 30° appear to be most sensitive to surface wind-speed variability in the regime below 10 m/s. The Lidar In-space Technology Experiment (LITE) shuttle lidar mission of September 1994 provided a unique opportunity to measure directional backscatter at selected locations by use of the landmark track maneuver and to measure fixed-angle backscatter from the ocean surfaces on a global scale. During the landmark track maneuver the shuttle orbiter orientation and roll axis are adjusted continuously to maintain the lidar footprint at a fixed location for a duration of ∼1 min. Several data sets were converted to calibrated reflectance units and compared with a surface reflectance model to deduce surface wind speeds. Comparisons were made with ERS-1 scatterometer data and surface measurements.

© 1998 Optical Society of America

OCIS Codes
(010.3640) Atmospheric and oceanic optics : Lidar
(010.4450) Atmospheric and oceanic optics : Oceanic optics
(280.3640) Remote sensing and sensors : Lidar
(290.1350) Scattering : Backscattering

History
Original Manuscript: November 25, 1997
Revised Manuscript: April 10, 1998
Published: August 20, 1998

Citation
Robert T. Menzies, David M. Tratt, and William H. Hunt, "Lidar In-space Technology Experiment measurements of sea surface directional reflectance and the link to surface wind speed," Appl. Opt. 37, 5550-5559 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-24-5550

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