Ahmet Öztopal, Albero Mugnai, Daniele Casella, Marco ... - H-SAF

6. SUMMARY AND CONCLUSIONIn this study, for PR-OBS-1 (Precipitation Rate at Ground by MW Conical Scanners)a Turkish databese is structured and with these data the Bayesian approached isebhanced by all means. The rainfall products through such a study is validated by TurkishCDR on 206 rainfall stations within the same network and with 2 single polarization C banddoppler radars. Additionally, NEXRAD version of PR-OBS-2 (Precipitation rate at groundby MW cross-track scanners) is aso taken into consideration during the validation process.As already defined earlier in this report four rainfall events in radar on 8 February2009, 3 October 2008, 21 March 2008 and 9 September 2009 are compared with retrievalvalues and in all the cases overestimations are observed. Especially at brathermountainous region of Balıkesir it is observed that coarser resolution (3x3 filter) indicatessome improvements compared to fşner filter cases. However, on 9 September 2009rainfall event on comparatively flat area matches far better with the retrieval values andhence the spatial rainfall occurrence extent and numerical values are very close to eachother than any other three cases in Balıkesir.As a conclusion one can conclude that the retrieval yields overestimations. At thispoint due to the single polarization of radars lower values might be obtained aso and thispoint must be taken into consideration in the future studies. Apart from all these, thecoverage area of the radar will also help to improve the results, because in themountainous areas there are blockage effects due to high hills.PR-OBS-1 ve PR-OBS-2 products are rather low POD and CSI values comparedwith the validation results during July-August-2009 period, but FAR values are high.Along with the results that emerge from this study it is adviced to try and improvethe efficiency of the algorithm in the future.31