From cirrus studies based on cloud radar moments to mixed-phase cloud studies based on cloud radar Doppler spectra as well as synergistic cloud radar-lidar observations
Heike Kalesse
Leibniz Institute for Tropospheric Research (TROPOS), Germany
Wednesday, Jun 15, 2016, 3:00 pm
DSRC Room 1D403
Abstract
The seminar will focus on ground-based remote-sensing observations of clouds. Firstly, some work related to ice cloud dynamical climatologies based on 35GHz Doppler cloud radar observations is presented.
Secondly, the information content of cloud Radar Doppler spectra - which has a unique signature representing cloud microphysics and dynamics - will be shown for a wintertime snowfall event in Finland where different hydrometeor phases were identified.
Thirdly, the focus is on synergistic radar-lidar observations and the objectives of the German-Science-Foundation project "Characterization of phase partitioning in mixed-phase clouds" (COMPoSE). This project aims at developing methods for a full vertical characterization of the liquid phase in mixed-phase clouds beyond the lidar measurement range. In the proposed project the full radar Doppler spectrum - which has a unique signature representing cloud microphysics and dynamics - will be analyzed in order to determine the phase partitioning in mixed-phase clouds in the entire vertical column beyond lidar extinction.
As an outlook, the use of a 1D microphysical model and of a radar Doppler spectra forward simulator will create a closed-loop that will – hopefully - allow us to evaluate our understanding of certain microphysical processes - such as riming - occurring in mixed-phase clouds.
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Seminar Contact: madeline.sturgill@noaa.gov