 |
| Titel |
Simulation of polarimetric radar variables in rain at S-, C- and X-band wavelengths |
| VerfasserIn |
F. Teschl, W. L. Randeu, M. Schönhuber, R. Teschl |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1680-7340
|
| Digitales Dokument |
URL |
| Erschienen |
In: Observation, Prediction and Verification of Precipitation (EGU Session 2007) ; Nr. 16 (2008-04-09), S.27-32 |
| Datensatznummer |
250013067
|
| Publikation (Nr.) |
 copernicus.org/adgeo-16-27-2008.pdf |
|
|
|
|
|
| Zusammenfassung |
| Polarimetric radar variables of rainfall events, like differential
reflectivity ZDR, or specific differential phase KDP, are better
suited for estimating rain rate R than just the reflectivity factor for
horizontally polarized waves, ZH. A variety of physical and empirical
approaches exist to estimate the rain rate from polarimetric radar
observables. The relationships vary over a wide range with the location and
the weather conditions.
In this study, the polarimetric radar variables were simulated for S-, C-
and X-band wavelengths in order to establish radar rainfall estimators for
the alpine region of the form R(KDP), R(ZH, ZDR), and
R(KDP), ZDR. For the simulation drop size distributions of hundreds
of 1-minute-rain episodes were obtained from 2D-Video-Distrometer
measurements in the mountains of Styria, Austria. The sensitivity of the
polarimetric variables to temperature is investigated, as well as the
influence of different rain drop shape models – including recently
published ones – on radar rainfall estimators. Finally it is shown how the
polarimetric radar variables change with the elevation angle of the
radar antenna. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|