Precipitation Estimates from Microwave Links for Urban Hydrology: Improving the Accuracy Using Wet-Antenna Calibration

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F21%3A00357497" target="_blank" >RIV/68407700:21110/21:00357497 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Precipitation Estimates from Microwave Links for Urban Hydrology: Improving the Accuracy Using Wet-Antenna Calibration
Original language description
Commercial microwave links (CMLs) can be used as unintentional rainfall sensors and provide path-integrated quantitative precipitation estimates (QPEs). However, the bias common in CML QPEs, which can be often attributed to imprecise correction for wet antenna attenuation (WAA), compromises the application of CML QPEs for many hydrological tasks. To achieve optimal performance, WAA models should be calibrated using independent local rainfall data with high spatiotemporal resolution. Such data are, however, often not available. We explore the possibility to reduce the bias in CML QPEs by calibrating a WAA model using data which could be better available to urban hydrology professionals. We show that, when simulating discharges in a small (1.3 km2) urban catchment, using the WAA model calibrated to discharge observations or to 60-min data from a single rain gauge in the distance of 7 km, the rainfall-runoff model performance is considerably improved compared to uncalibrated CML QPEs.
Czech name
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Czech description
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Project
<a href="/en/project/GC20-14151J" target="_blank" >GC20-14151J: Spatial rainfall estimates using improved observations from commercial microwave links and statistical data fusion (SpraiLINK)</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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