Compact Automatic Rotational Raman Lidar for Day-and Nighttime Temperature and Humidity Profiling up to the Turbulence Scale
Dr. Andreas Behrendt
University of Hohenheim
Thursday, Aug 22, 2019, 11:00 am
DSRC Room 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.
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