[1186] - 5th PhD report: Assimilation of 3D Radar Reflectivities with an Ensemble Kalman Filter on the Convective Scale

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Bick, T., 2015. 5th PhD report: Assimilation of 3D Radar Reflectivities with an Ensemble Kalman Filter on the Convective Scale. PhD Report, Meteorologisches Institut, Universität Bonn, Bonn. Accessed from https://www.tr32db.uni-koeln.de/data.php?dataID=1186 at 2019-07-20.
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Title(s):Main Title: 5th PhD report: Assimilation of 3D Radar Reflectivities with an Ensemble Kalman Filter on the Convective Scale
Description(s):Abstract: An ensemble data assimilation system for 3D radar reflectivity data on the convective scale is introduced for the convection permitting numerical weather prediction model COSMO. KENDA, developed by Deutscher Wetterdienst (DWD) and its partners, provides a state-of-the-art ensemble data assimilation system on the convective scale for operational data assimilation and forecasting based on a variant of the ensemble Kalman filter. In this study, the radar forward operator EMVORADO is applied for the assimilation of radar reflectivity data to improve short-term model predictions of precipitation. Both deterministic and ensemble forecasts have been carried out based on KENDA. A case study shows that the assimilation of 3D radar reflectivity data clearly improves precipitation location in the analysis and has a positive impact on the forecast for several hours following the analysis. The influence of different update rates on the noise in terms of surface pressure tendencies and on the forecast quality in general are investigated. For a period of seven consecutive days the results are compared to those of DWD’s current operational radar assimilation scheme based on the latent heat nudging.
Responsible Party
Creator(s):Author: Theresa Bick
Publisher:CRC/TR32 Database (TR32DB)
TR32 Topic:Atmosphere
Related Sub-project(s):C6
Subject(s):CRC/TR32 Keywords: Data Assimilation, Radar, COSMO
File Details
File Name:tbick_report5_2015.pdf
Data Type:Text
File Size:35280 kB (34.453 MB)
Date(s):Available: 2015-09-11
Mime Type:application/pdf
Data Format:PDF
Download Permission:OnlyTR32
General Access and Use Conditions:According to the TR32DB data policy agreement.
Access Limitations:According to the TR32DB data policy agreement.
Licence:TR32DB Data policy agreement
North:-no map data
Measurement Region:None
Measurement Location:--None--
Specific Informations - Report
Report Date:11th of September, 2015
Report Type:PhD Report
Report City:Bonn
Report Institution:Meteorologisches Institut, Universität Bonn
Metadata Details
Metadata Creator:Theresa Bick
Metadata Created:2015-09-18
Metadata Last Updated:2015-09-18
Funding Phase:3
Metadata Language:English
Metadata Version:V40
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