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Project D5


A high-resolution space-time model for precipitation combining remote sensing and in-situ measurements

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Research Area:
Meteorology, Hydrology


project d5

We detect and monitor structures of rain fields covering spatial scales from tens of metres to hundreds of kilometres and temporal scales from minutes to months.

Specific efforts are put on the full exploitation of the polarization information for quantitative rain estimation in both rain and snow cases. Polarisation information based on differential phase and specific differential phase are used to correct reflectivities for both attenuation (especially large for X-Band) and beam blocking (a particularly serious problem for the Bonn radar). The local vertical profiles are used to estimate surface rainfall. For validation we exploit the strong overlap of the Bonn radar with an equivalent radar setup on the Sophienhöhe in the framework of the HGF monitoring effort TERENO.

We further develop a space-time precipitation model that optimally combines precipitation observations from different sources, which have in part vastly different spatial and temporal supports and error structures. The precipitation model describes transformed radar rain rates as thresholded Gaussian random fields and merges them with gauge mesurements. The final goal is the derivation of high-resolution area mean surface precipitation fields on a horizontal grid with a grid spacing of a few hundreds of meters and a temporal resolution of 5 minutes which are, on a larger scale, calibrated to aggregated gauge measurements, and which, on a small scale, reproduce the spatial characteristics as suggested by the radar images.


Cooperation partner:

11 Member(s):

Petra Friederichs

PD Dr.
Petra Friederichs
Principal Investigator
in D5

University of Bonn
Meteorological Institute

Auf dem Hügel 20
53121 Bonn
Germany

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+49 (0)228 73 5187
+49 (0)228 73 5188
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pfried@uni-bonn.de

 

 

Michael Griebel

Prof. Dr.
Michael Griebel
Principal Investigator
in D5

University of Bonn
Institute for
Numerical Simulation

Wegelerstr. 6
53115 Bonn
Germany

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+49 (0)228 73 3437
+49 (0)228 73 7527
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griebel@ins.uni-bonn.de

 

 

Martin Schlather

Prof. Dr.
Martin Schlather
Principal Investigator
in D5

University of Mannheim
Institute of Mathematics

68131 Mannheim
Germany

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+49 (0)621 181-2553
+49 (0)621 181-2539
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schlather@math.uni-mannheim.de

 

 

Clemens Simmer

Prof. Dr.
Clemens Simmer
Principal Investigator
in C4, D5, Z2, Z4

University of Bonn
Meteorological Institute

Auf dem Hügel 20
53121 Bonn
Germany

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+49 (0)228 73 5181
+49 (0)228 73 5188
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csimmer@uni-bonn.de

 

 

Silke Trömel

Dr.
Silke Trömel
Principal Investigator
in D7, D5

University of Bonn
Hans-Ertel-Centre
for Weather Research

Auf dem Hügel 20
53121 Bonn
Germany

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+49 (0)228 73 5779
+49 (0)228-73-5188
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silke.troemel@uni-bonn.de

 

 

Gordon Diefenthal

Diplom Physik
Gordon Diefenthal
Ph.D. Student
in D5

University of Bonn
Meteorological Institute

Auf dem Hügel 20
53121 Bonn
Germany

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+49 (0)228 73 9084

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g.diefenthal@uni-bonn.de

 

 

Brandon Hickman

Master of Science
Brandon Hickman
Ph.D. Student
in D5

University of Bonn
Meteorological Institute


Germany

Katharina Krebsbach

Katharina Krebsbach
Ph.D. Student
in D5

University of Bonn
Meteorological Institute

Auf dem Hügel 20
53121 Bonn
Germany

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+49 (0)228 73 9086

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kkrebsbach@uni-bonn.de

 

 

Alexander Rüttgers

Diplom-Mathematiker
Alexander Rüttgers
Ph.D. Student
in D5

University of Bonn
Institute for
Numerical Simulation

Wegelerstr. 6
53115 Bonn
Germany

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+49 (0)228 73 3170

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ruettgers@ins.uni-bonn.de

 

 

Katharina Schinagl

Diploma in Mathematics
Katharina Schinagl
Ph.D. Student
in D5

University of Bonn
Meteorological Institute

Auf dem Hügel 20
53121 Bonn
Germany

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+49 (0)228 73 9085

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schinagl@uni-bonn.de

 

 

Matthias Schmidt

Matthias Schmidt
Ph.D. Student
in external partner, D5

University of Bonn
Meteorological Institute

Auf dem Hügel 20
53121 Bonn
Germany


Precipitation radar Uni Bonn

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