The accuracy of weather radar in heavy rain : A comparative study for Denmark, the Netherlands, Finland and Sweden

The weather radar is a valuable inventory for predicting the amount of precipitation and studying the relationship with the water literary reaction. Many tasks remain to clearly measure small abnormal precipitation that floods in cities. Among them, the fact that radar is underestimating the amount of precipitation compared to marriage. In fact, there is an ambition to reduce these inconsistencies thanks to the measurement of hig h-solution resolution and the use of double polarization radar. Each state devised a personal strategy to solve this difficult task. However, it is not easy to consider improvement measures fairly because it is not a joint sample. This study evaluates the radar abilities that integrate strong rainfall from 5 minutes to 2 hours by applying new light to the current characteristics. This study was conducted as part of the overall experience of muffins (mult i-scale city flood prediction plan), and the purpose is to grasp the relationship between precipitation and the flood in the city on a different scale. A total of six types of radars were considered in Denmark, Netherlands, Finland and Sweden. The 5 0-year best measures for 10 years based on these radar have been applied. < SPAN> Meteorological radar is a valuable inventory for predicting precipitation and studying the relationship with water literary reactions. Many tasks remain to clearly measure small abnormal precipitation that floods in cities. Among them, the fact that radar is underestimating the amount of precipitation compared to marriage. In fact, there is an ambition to reduce these inconsistencies thanks to the measurement of hig h-solution resolution and the use of double polarization radar. Each state devised a personal strategy to solve this difficult task. However, it is not easy to consider improvement measures fairly because it is not a joint sample. This study evaluates the radar abilities that integrate strong rainfall from 5 minutes to 2 hours by applying new light to the current characteristics. This study was conducted as part of the overall experience of muffins (mult i-scale city flood prediction plan), and the purpose is to grasp the relationship between precipitation and the flood in the city on a different scale. A total of six types of radars were considered in Denmark, Netherlands, Finland and Sweden. The 5 0-year best measures for 10 years based on these radar have been applied. The weather radar is a valuable inventory for predicting the amount of precipitation and studying the relationship with the water literary reaction. Many tasks remain to clearly measure small abnormal precipitation that floods in cities. Among them, the fact that radar is underestimating the amount of precipitation compared to marriage. In fact, there is an ambition to reduce these inconsistencies thanks to the measurement of hig h-solution resolution and the use of double polarization radar. Each state devised a personal strategy to solve this difficult task. However, it is not easy to consider improvement measures fairly because it is not a joint sample. This study evaluates the radar abilities that integrate strong rainfall from 5 minutes to 2 hours by applying new light to the current characteristics. This study was conducted as part of the overall experience of muffins (mult i-scale city flood prediction plan), and the purpose is to grasp the relationship between precipitation and the flood in the city on a different scale. A total of six types of radars were considered in Denmark, Netherlands, Finland and Sweden. The 5 0-year best measures for 10 years based on these radar have been applied.

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As shown in the Dutch C band product case. As created by Finnish OSAPOL products, estimating the precipitation intensity using the synthesis of reflection (Z) and differential phase shift (KDP) is a promising strategy, not the need to fix the meter. 。 Both layouts have almost uniform results, and the average error (in 10 minutes resolution) is within 30 % and the peak intensity error is within 45 %.

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Title = "Comparative research on Denmark, Dutch, Finland, Sweden"

Abstract = "Dutch C Band Product. Just as created by the Finnish OSAPOL product, it is to estimate precipitation intensity using the synthesis of reflection (Z) and differential phase shift (KDP). It is a promising strategy without the need to fix the meter, and has almost uniform results, and the average error (in 10 minutes) is within 45 %. It was. Author = "Marc Schleiss and Jonass Olsson and Teemi and Teemu Kokkkonen and Soren Thoren Thoren Thoren Thoren Thoren Thrasmus Nielsen & AMP; mp; gt;, Jesper and Denica Bozhinova and Seppo Pulkkinen, year = "2020 month = "june", Doi = "10. 5194/Hess-24-3157-2020", Language = "English Volume = "24", Pages = "31573188", JOURNAL = "Water literature and global system science", ISSN = "1027-5606",

Publisher = "Copernicus Publishing"

Survey results: Contribution to Reviewing of the academic magazine "Notes'Scientific"

T 1-Accuracy of weather radar during heavy rain: Denmark, Netherlands, Finland, Sweden comparative research

A u-Schleiss, mark

A u-Olson, Jonas

A u-Kokkonen, Tame

A u-Thornedard, Soren

A u-Ellerbeck nielsen, Rasmus

A u-Error Beck Nielsen, Jesper

Au --Bozjinova, Denitsa

Au --Pluckinen, Seppo

N 2-As the product of the C band of the Netherlands has shown. The more promising strategy that does not require the adaptation of the manometer is the evaluation of the precipitation intensity by supporting the composition of the reflection (Z) and the derivative phase shift (KDP), as created in the Finnish OSAPOL product. Both layouts show almost monotonous results, with average error (1 0-minute decomposition) within 30 % and peak intensity errors within 45 %.

A B-C -As shown in the Netherlands of the band. A more promising strategy that does not require the adaptation of the manometer is the evaluation of the precipitation intensity that introduces the configuration of the reflection (Z) and the derivative phase shift (KDP), as created by the Finnish OSAPOL product. Both layouts show almost monotonous results, with average error (1 0-minute decomposition) within 30 % and peak intensity errors within 45 %.

J O-Water literature and global system science