Space-time variability of the microstructure of precipitation at the radar-subgrid scale

Description: Das Projekt "Space-time variability of the microstructure of precipitation at the radar-subgrid scale" wird vom Umweltbundesamt gefördert und von Ecole Polytechnique Federale de Lausanne (EPF), Institut d'Amenagement des Terres et des Eaux (IATE) durchgeführt. Ground-based and spaceborne weather radars provide a wealth of remotely sensed precipitation measurements. A key issue for the quantitative use of these data in various applications is the space-time variability of the microstructure of precipitation, described by the drop size distribution (DSD hereafter). Although the variability of rainfall intensity at scales smaller than the radar resolution (radar-subgrid scales hereafter) has been studied extensively, there is no large-enough data set on the spatial variability of the DSD at radar-subgrid scales to perform robust spatial analyses. The aim of this proposal is to set up an experiment addressing this lack by deploying a network of 14 disdrometers covering the typical radar pixel (i.e. about 1x1ca.km2 for ground-based radars, and about 5x5 km2 for spaceborne radars). From the data collected, the space-time variability of the DSD will be quantified and characterized. Its influence on the accuracy of the estimation of precipitation using radar will be investigated. In particular, a stochastic simulator of space-time fields of DSD will be developed to provide a useful tool for the evaluation of the different precipitation remote sensing techniques and the associated retrieval algorithms.

Types:

SupportProgram

Origin: /Bund/UBA/UFORDAT

Tags: Niederschlagshöhe ? Niederschlagsintensität ? Messgerät ? Lack ? Lausanne ? Radar ? Fernerkundungsdaten ? Regenwasser ? Wetterdaten ? Duales System ? Geoinformation ? Regen ? Berechnungsverfahren ? Daten ? Größenverteilung ? Messdaten ? Quantitative Analyse ? Stochastik ? Messung ? Fernerkundung ? Niederschlag ? Wetter ? Auflösungsvermögen ? Distrometer ? Zeitverlauf ? drop size distribution ? radar-subgrid scale ?

License: cc-by-nc-nd/4.0

Language: Deutsch

Organisations

• Ecole Polytechnique Federale de Lausanne (EPF), Institut d'Amenagement des Terres et des Eaux (IATE) (Betreiber*in)
• Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (Bereitsteller*in)
• Umweltbundesamt (Bereitsteller*in)

Time ranges: 2008-02-01 - 2011-01-31

Alternatives

• Language: Englisch/English https://ufordat.uba.de/

Status

Aktiv

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