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Effects of spatial resolution on radar-based precipitation estimation using sub-kilometer X-band radar measurements

Zheng, Yaoyao

Abstract (englisch):

Known for the ability to observe precipitation at spatial resolution higher than rain gauge networks and
satellite products, weather radars allow us to measure precipitation at spatial resolutions of 1 kilometer
(typical resolution for operational radars) and a few hundred meters (often used in research activities).
In principle, we can operate a weather radar at resolution higher than 100m and the expectation is that
radar data at higher spatial resolution can provide more information. However, there is no systematic
research about whether the additional information is noise or useful data contributing to the quantitative
precipitation estimation. In order to quantitatively investigate the changes, as either benefits or drawbacks,
caused by increasing the spatial resolution of radar measurements, we set up an X-band radar
field experiment from May to October in 2017 in the Stuttgart metropolitan region. The scan strategy
consists of two quasi-simultaneous scans with a 75-m and a 250-m radial resolution respectively. They
are named as the fine scan and the coarse scan, respectively. Both scans are compared to each other in
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Volltext §
DOI: 10.5445/IR/1000139551
Veröffentlicht am 03.11.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung – Forschungsbereich Troposphäre (IMK-TRO)
Publikationstyp Hochschulschrift
Publikationsdatum 03.11.2021
Sprache Englisch
Identifikator KITopen-ID: 1000139551
Verlag Karlsruher Institut für Technologie (KIT)
Umfang 361 S.
Art der Arbeit Dissertation
Fakultät Fakultät für Physik (PHYSIK)
Institut Institut für Meteorologie und Klimaforschung (IMK)
Prüfungsdatum 02.07.2021
Schlagwörter weather radar, precipitation, spatial resolution
Referent/Betreuer Kottmeier, C.
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