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Proceedings Paper

Airborne water vapor DIAL estimation of humidity fluxes and atmospheric boundary-layer parameters
Author(s): Christoph Kiemle; Gerhard Ehret; K. J. Davis; Donald H. Lenschow
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Paper Abstract

We present measurements of water vapor using a differential absorption lidar (DIAL) system mounted downward looking on board a meteorological research aircraft. Flight tracks flown in 1.5 - 3 km above ground show the height and entrainment structure of the atmospheric boundary layer top. Cross sections of water vapor can be used to study for example land- sea interactions or the structure of thermals in a convective boundary layer. Applying spectral and autocorrelation analyses across horizontal DIAL water vapor series gives insight into the turbulent structure of the atmosphere. Vertical fluxes of humidity at the top of the boundary layer can be estimated from the DIAL variance water vapor profiles using a set of empirically derived equations. Such measurements are of high climatological interest, since they enable us to evaluate and monitor evaporation and biosphere-atmosphere exchange processes.

Paper Details

Date Published: 26 May 1997
PDF: 8 pages
Proc. SPIE 3104, Lidar Atmospheric Monitoring, (26 May 1997); doi: 10.1117/12.275140
Show Author Affiliations
Christoph Kiemle, DLR (Germany)
Gerhard Ehret, DLR (Germany)
K. J. Davis, Univ. of Minnesota/Twin Cities (United States)
Donald H. Lenschow, National Ctr. for Atmospheric Research (United States)

Published in SPIE Proceedings Vol. 3104:
Lidar Atmospheric Monitoring
Jean-Pierre Wolf, Editor(s)

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