Pfeifer, Monika und Craig, George und Hagen, Martin und Keil, Christian (2008) A polarimetric radar forward operator for model evaluation. Journal of Applied Meteorology and Climatology, 47, Seiten 3202-3220. American Meteorological Society. doi: 10.1175/2008JAMC1793.1.
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Kurzfassung
A polarimetric radar forward operator has been developed as a tool for the systematic evaluation of microphysical parameterization schemes in high-resolution numerical weather prediction (NWP) models. The application of such a forward operator allows a direct comparison of the model simulations to polarimetric radar observations. While the comparison of observed and synthetic reflectivity gives information on the quality of quantitative precipitation forecasts, the information from the polarimetric quantities allows for a direct evaluation of the capacity of the NWP model to realistically describe the processes involved in the formation and interactions of the hydrometeors and, hence, the performance of the microphysical parameterization scheme. This information is expected to be valuable for detecting systematic model errors and hence improve model physics. This paper summarizes the technical characteristics of the synthetic polarimetric radar (SynPolRad). Different polarimetric radar quantities are computed from model forecasts using a T-matrix scattering code and ice phase hydrometeors are explicitly considered. To do so, the sensitivities of the scattering processes to the microphysical characteristics of different ice hydrometeors are investigated using sensitivity studies. Furthermore, beam propagation effects are considered, including attenuation and beam bending. The performance of SynPolRad and the consistence of the assumptions made in the derivation of the input parameters are illustrated in a case study. The resulting synthetic quantities as well as hydrometeor classification are compared with observations and are shown to be consistent with the model assumptions.
elib-URL des Eintrags: | https://elib.dlr.de/49385/ | ||||||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||
Titel: | A polarimetric radar forward operator for model evaluation | ||||||||||||||||||||
Autoren: |
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Datum: | 2008 | ||||||||||||||||||||
Erschienen in: | Journal of Applied Meteorology and Climatology | ||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||
Open Access: | Ja | ||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||
Band: | 47 | ||||||||||||||||||||
DOI: | 10.1175/2008JAMC1793.1 | ||||||||||||||||||||
Seitenbereich: | Seiten 3202-3220 | ||||||||||||||||||||
Verlag: | American Meteorological Society | ||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||
Stichwörter: | Polarimetric radar, model evaluation, Numerical weather prediction, SynPolRad | ||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||
HGF - Programm: | Luftfahrt | ||||||||||||||||||||
HGF - Programmthema: | L VU - Luftverkehr und Umwelt (alt) | ||||||||||||||||||||
DLR - Schwerpunkt: | Luftfahrt | ||||||||||||||||||||
DLR - Forschungsgebiet: | L VU - Luftverkehr und Umwelt | ||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | L - Luftverkehr und Wetter (alt) | ||||||||||||||||||||
Standort: | Oberpfaffenhofen | ||||||||||||||||||||
Institute & Einrichtungen: | Institut für Physik der Atmosphäre > Wolkenphysik und Verkehrsmeteorologie | ||||||||||||||||||||
Hinterlegt von: | Pfeifer, Monika | ||||||||||||||||||||
Hinterlegt am: | 27 Sep 2007 | ||||||||||||||||||||
Letzte Änderung: | 06 Sep 2019 15:19 |
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