Monitoring of radar data quality in the Czech Weather Radar Network

Result code in 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>

Result on the web

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

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Monitoring of radar data quality in the Czech Weather Radar Network

Original language description

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.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

10509 - Meteorology and atmospheric sciences

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

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