Project Details
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OPTIMice-close: Optimal combination of Polarimetric and Triple frequency radar techniques for Improving Microphysical process understanding of cold clouds and associated rainfall

Applicant Dr. Stefan Kneifel
Subject Area Atmospheric Science
Term from 2016 to 2022
Project identifier Deutsche Forschungsgemeinschaft (DFG) - Project number 290611444
 
Final Report Year 2023

Final Report Abstract

The main objective of the OPTIMIce project was to improve our understanding and ability to realistically model ice microphysical processes, such as aggregation, riming, secondary ice processes, and melting. In order to achieve this ambitious goal, we needed to make progress and optimally combine the following three main work areas: 1) Obtain a synergistic dataset of triplefrequency radar, Doppler spectra, and polarimetric radar observations of mid-latitude winter clouds; 2) Further develop a radar forward operator in combination with realistic scattering assumptions for ice and snow particles; 3) Combine long-term numerical weather prediction model simulations and innovative 1D Lagrangian super-particle modelling in order to understand deficiencies identified by the radar observations in the bulk model and for developing improved parametrizations.

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