Methodology improvement of microwave link derived rain rate in Sweden

26 Jun 2019, 09:15
large seminar room (KIT Campus Alpin)

large seminar room

KIT Campus Alpin

Kreuzeckbahnstraße 19 82467 Garmisch-Partenkirchen
Oral Specific HyMet CML research topics (presentations on Day2, posters on Day1) Specific research topics


Remco van de Beek (SMHI, Sweden)


Microwave link derived rain rates show good correlation with ground observations, but can often suffer from large biases when applying only a standard ITU-R equation. The ITU-R equation describes the relation between path attenuation and rain rate, but other effects like wetting of the antenna can occur. Since 2015 SMHI has a semi-operational processing method that tries to correct these effects. Recently a new version of the algorithm was developed that was based on microwave link data gathered between May and November 2015 in Gothenburg, Sweden. These data were used to derive a attenuation- rain rate equation by directly comparing these data with rain gauge data. The resulting equation was tested on an independent dataset with a similar climate, namely Stockholm, for the period of 28 Juli-31 October 2018. The results are very promising and will be presented.

Primary author

Remco van de Beek (SMHI, Sweden)


Dr. Jafet Andersson (SMHI) Mr. Jonas Hansryd (Ericsson) Mr. Mathias von Scherling (SVOA)

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