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Proceedings Paper

Turbulence and mountain wave conditions observed with an airborne 2-micron lidar
Author(s): Edward H. Teets Jr.; Chris Ashburn; Jack Ehernberger; Rodney Bogue
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Paper Abstract

Joint efforts by the National Aeronautics and Space Administration (NASA), the Department of Defense, and industry partners are enhancing the capability of airborne wind and turbulence detection. The Airborne Coherent Lidar for Advanced In-Flight Measurements (ACLAIM) was flown on three series of flights to assess its capability over a range of altitudes, air mass conditions, and gust phenomena. This paper describes the observation of mountain waves and turbulence induced by mountain waves over the Tehachapi and Sierra Nevada mountain ranges (California, USA) by lidar onboard the NASA Airborne Science DC-8 airplane. The examples in this paper compare lidar-predicted mountain waves and wave-induced turbulence to subsequent aircraft-measured true airspeed. Airplane acceleration data is presented describing the effects of the wave-induced turbulence on the DC-8 airplane. Highlights of the lidar-predicted airspeed from the two flights show increases of 12 meters per second (m/s) at the mountain wave interface and peak-to-peak airspeed changes of 10 m/s and 15 m/s in a span of 12 seconds in moderate turbulence.

Paper Details

Date Published: 3 October 2006
PDF: 9 pages
Proc. SPIE 6367, Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing II, 63670O (3 October 2006); doi: 10.1117/12.690090
Show Author Affiliations
Edward H. Teets Jr., NASA Dryden Flight Research Ctr. (United States)
Chris Ashburn, AS&M, Inc. (United States)
Jack Ehernberger, NASA Dryden Flight Research Ctr. (United States)
Rodney Bogue, NASA Dryden Flight Research Ctr. (United States)

Published in SPIE Proceedings Vol. 6367:
Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing II
Upendra N. Singh, Editor(s)

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