Conveners
Quantitative Precipitation Estimation (QPE): Quantitative Precipitation Estimation (QPE)
- Silke Trömel (University of Bonn)
- Christian Chwala (University of Augsburg, KIT IMK-IFU)
Significant progress has been recently made for estimation of rainfall at relatively short distances from the radar where the radar samples pure rain below the melting layer (ML). The R(A) methodology based on the use of specific attenuation A proves to be superior compared to the standard QPE algorithms utilizing radar reflectivity Z, specific differential phase KDP, and differential...
Polarimetric weather radar have provided improved depictions of the size, shape, phase and concentration of various scatterers in the atmosphere over the single-polarized weather radar and a more accurate quantitative precipitation estimation (QPE). A number of studies using disdrometer data indicated that specific attenuation, a polarimetric radar derived variable, was more linearly related...
The inherent uncertainty in radar snow estimates comes from variability in snow size distributions, diversities among snow growth habits, and changes in particle densities. As a consequence, radar snow measurements are very challenging. However, the utilization of polarimetric radar data can address some of these problems. A novel polarimetric method for quantification of snowfall rate, based...
Recent advances have been made to demonstrate the benefits of radar-derived horizontal specific attenuation (AH) for Quantitative Precipitation Estimation (QPE) at S and X band, however, to date the methodology has not been adapted and optimized for C-band radars in widespread use in Europe. Simulations based on a large dataset of Drop Size Distributions (DSDs) measured in Germany are...
Hydrometeorologists have traditionally relied on dedicated measurement equipment to do their business. Such instruments are typically owned and operated by government agencies and regional or local authorities. Installed and maintained according to (inter)national standards, they offer accurate and reliable information about environmental states and fluxes. Such standard instruments are often...
Urban catchments are characterized by diverse land cover with large ratio of impervious surfaces on which rainfall-runoff is generated extremely fast. This possess high requirements on spatio-temporal resolution of rainfall data needed for reliable runoff predictions. The contribution summarizes results from three-years experiment evaluating reliability of rainfall-runoff simulations at small...
Commercial microwave links (CMLs) can be used for quantitative precipitation estimation (QPE) by exploiting the close to linear relationship between path-integrated attenuation and path-averaged rain rate. Currently, attenuation data from 3904 CMLs in Germany is obtained in real-time, with 3 years of collected data. We have carried out a first large scale analysis of a full year of countrywide...
