Verification of QPFs in hydrological catchments applying the novelty SAL technique utilizing QPEs based on a local analysis system and radar data

摘要

@@ 1. Introduction Object-oriented or feature-based verification techniques are well suited for the verification of spatial Quantitative Precipitation Forecasts (QPF) in hydrological basins that have clearly defined lateral boundaries. SAL (acronym for Structure - Amplitude Location), developed by Wernli et al. (2008), is a relatively new object-based verification measure which has gained rather wide popularity in Europe since its introduction. This technique has been applied for hydrological catchment verification at the Finnish Meteorologicallnstitute (FMI) quite actively (Nurmi and Nasman, 2008, 2009a,b, 2010).