Monitoring of radar data quality in the Czech Weather Radar Network

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00020699%3A_____%2F22%3AN0000113" target="_blank" >RIV/00020699:_____/22:N0000113 - isvavai.cz</a>

Výsledek na webu

<a href="https://enacshare.epfl.ch/dUQ4fCXGYPh3RbcKWFpwL#" target="_blank" >https://enacshare.epfl.ch/dUQ4fCXGYPh3RbcKWFpwL#</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Monitoring of radar data quality in the Czech Weather Radar Network

Popis výsledku v původním jazyce

Contribution at ERAD 2022 conference, Locarno, Switzerland, 29.8.-2.9.2022. Abstract: The Czech Hydrometeorological Institute (CHMI) operates weather radar network CZRAD which consists of two Doppler C-band dual-pol radars Vaisala WRM 200 which were installed during summer 2015 replacing older single-pol weather radars. Data output of CZRAD network is widely used by forecasters in meteorology and hydrology, air traffic control and other users. Radar measurements in horizontal and vertical polarization enable improvement of quality of standard horizontal radar reflectivity and radial velocity data (better filtering of non-meteorological targets and attenuation correction) and provide also fully new radar products that extend ways of their utilization (e.g. hydrometeor classification, detection of strong storm updrafts using ZDR column product). However increasing quantitative use of these radar data has also increasing demands on radar data quality. Therefore to ensure better quality of dual-pol data extended effort has to be focused on radar data calibration and monitoring. Several procedures are currently being developed in the CHMI. These procedures monitor various radar moments like ZDR , PhiDP , ZH , ZV and TH , TV including their dependency on distance, azimuth and their changes in time in order to detect possible internal changes in radar system and external factors such as RLAN interferences. The contribution gives an overview of the procedures implemented in the CHMI used for monitoring of various radar data parameters.

Název v anglickém jazyce

Monitoring of radar data quality in the Czech Weather Radar Network

Popis výsledku anglicky

Contribution at ERAD 2022 conference, Locarno, Switzerland, 29.8.-2.9.2022. Abstract: The Czech Hydrometeorological Institute (CHMI) operates weather radar network CZRAD which consists of two Doppler C-band dual-pol radars Vaisala WRM 200 which were installed during summer 2015 replacing older single-pol weather radars. Data output of CZRAD network is widely used by forecasters in meteorology and hydrology, air traffic control and other users. Radar measurements in horizontal and vertical polarization enable improvement of quality of standard horizontal radar reflectivity and radial velocity data (better filtering of non-meteorological targets and attenuation correction) and provide also fully new radar products that extend ways of their utilization (e.g. hydrometeor classification, detection of strong storm updrafts using ZDR column product). However increasing quantitative use of these radar data has also increasing demands on radar data quality. Therefore to ensure better quality of dual-pol data extended effort has to be focused on radar data calibration and monitoring. Several procedures are currently being developed in the CHMI. These procedures monitor various radar moments like ZDR , PhiDP , ZH , ZV and TH , TV including their dependency on distance, azimuth and their changes in time in order to detect possible internal changes in radar system and external factors such as RLAN interferences. The contribution gives an overview of the procedures implemented in the CHMI used for monitoring of various radar data parameters.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10509 - Meteorology and atmospheric sciences

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů