Seminar

Compact Automatic Rotational Raman Lidar for Day-and Nighttime Temperature and Humidity Profiling up to the Turbulence Scale

DSRC entrance

Andreas Behrendt, University of Hohenheim

Thursday, August 22, 2019, 11:00 am Mountain Time
DSRC 2A305

Abstract

Water-vapor and temperature profiles with high accuracy and high resolution from the surface throughout the troposphere are fundamental for accurate weather forecasts, process studies, and validation of satellites. The Atmospheric Raman Temperature and Humidity Sounder (ARTHUS), a new remote sensing system fulfilling these requirements, has been developed by the Institute of Physics and Meteorology (IPM) at the University of Hohenheim (UHOH). The key components of the system are a diode-pumped Nd:YAG laser operating at 200 Hz providing more than 20 W of eye-safe radiation at 355 nm, a 40-cm receiving telescope, and very efficient interference filters. The raw data resolution of the signals, which are collected simultaneously in analog and photon-counting mode, are 7.5 m and 10 s. The concept of this new system will be presented. In the recent months the system was tested successfully. Measurement examples up to the turbulence scale will be shown.

Andreas Behrendt heads the Remote Sensing working group in the Institute of Physics and Meteorology at the University of Hohenheim in Stuttgart, Germany.

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