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Advances in Geosciences An open-access journal for refereed proceedings and special publications

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Adv. Geosci., 9, 25-29, 2006
© Author(s) 2006. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.
26 Sep 2006
Radar rainfall estimates in an alpine environment using inverse hydrological modelling
A. Marx1, H. Kunstmann1, A. Bárdossy2, and J. Seltmann3 1Karlsruhe Research Center, Institute for Meteorology and Climate Research, Garmisch-Partenkirchen, Germany
2University of Stuttgart, Institute of Hydraulic Engineering, Germany
3German Weather Service, Meteorological Observatory Hohenpeissenberg, Germany
Abstract. The quality of hydrological modelling is limited due to the restricted availability of high resolution temporal and spatial input data such as temperature, global radiation, and precipitation. Radar-based rain measurements provide good spatial information. On the other hand, using radar data is accompanied by basic difficulties such as clutter, shielding, variations of Z/R-relationships, beam-resolution and attenuation. Instead of accounting for all errors involved separately, a robust Z/R-relationship is estimated in this study for the short range (up to 40 km distance) using inverse hydrological modelling for a continuous period of three months in summer 2001. River gauge measurements from catchment sizes around 100 km2 are used to estimate areal precipitation and finally Z/R-relationships using a calibrated hydrological model. The study is performed in the alpine Ammer catchment with very short reaction times of the river gauges to rainfall events.

Citation: Marx, A., Kunstmann, H., Bárdossy, A., and Seltmann, J.: Radar rainfall estimates in an alpine environment using inverse hydrological modelling, Adv. Geosci., 9, 25-29,, 2006.