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| Titel |
Spatial and temporal rainfall variation observed by vertically pointing radar clusters and disdrometers |
| VerfasserIn |
W. Yen, S. Crewell |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250030983
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| Zusammenfassung |
| One of the major uncertainties in quantitative precipitation estimation
using scanning radar and in-situ instruments is the temporal and spatial
ambiguity between these sensors, such as sample volume mismatch,
drop-sorting and horizontal drift by fallout. Information of raindrop size
distribution (RDSD) is indispensible for identification and quantification
of rainfall variations. The vertically pointing micro rain radar (MRR) can
measure RDSD profile and rainfall integral parameters including
reflectivity Z with high temporal resolution. It thus fits in as a
linkage between in-situ measurements and the radar pixel aloft.
Here a comparative analysis using clustered MRRs and disdrometers on
variation of rainfall integral and physical RDSD parameters in space and
time is presented. Concurrent observations from nine MRRs, two disdrometers
(optical and impact type) and one high resolution rain gauge were collected
during the AQUARadar (Advances in Quantitative Areal Precipitation
Estimation by Radar) field campaign for over three months in summer 2006.
The instruments were distributed to two field sites with a separation of 5.5
km in a east-weast alignment. Clustered MRRs at each site were separated by
an average distance of 300 m. |
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