Turbulence and mountain wave conditions observed with an airborne 2-micron lidar | Zendy

Edward H. Teets | Zendy; Chris Ashburn | Zendy; Jack Ehernberger | Zendy; Rodney K. Bogue | Zendy

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Turbulence and mountain wave conditions observed with an airborne 2-micron lidar

Author(s) -

Edward H. Teets,

Chris Ashburn,

Jack Ehernberger,

Rodney K. Bogue

Publication year - 2006

Publication title -

proceedings of spie, the international society for optical engineering/proceedings of spie

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.192

H-Index - 176

eISSN - 1996-756X

pISSN - 0277-786X

DOI - 10.1117/12.690090

Subject(s) - airspeed , lidar , airplane , clear air turbulence , turbulence , meteorology , radiosonde , environmental science , remote sensing , ranging , range (aeronautics) , dial , atmospheric sciences , aerospace engineering , geology , physics , geodesy , engineering , acoustics

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.

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