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Description
  • Radar measurements are affected by various types of errors and the transformation of measured radar reflectivity into rain rates is far from accurate. This study provides a deeper analysis of the influence of topography on radar-measured precipitation. By the means of linear regression analysis residuals between 134 rain gauges and corresponding radar estimated rainfalls were calculated, and then studied using residual regression analysis with topographic, locational and climatological independent variables. A multivariate second order polynomial regression model was developed with three topographic and locational variables as the best predictors: altitude, distance, and latitude, which can explain up to 74% of variance of the residual errors. This means that radar measurement errors are not only a cause of random variation, but can be partially predicted, which may allow for some type of correction and improvement in radar's accuracy.
  • Radar measurements are affected by various types of errors and the transformation of measured radar reflectivity into rain rates is far from accurate. This study provides a deeper analysis of the influence of topography on radar-measured precipitation. By the means of linear regression analysis residuals between 134 rain gauges and corresponding radar estimated rainfalls were calculated, and then studied using residual regression analysis with topographic, locational and climatological independent variables. A multivariate second order polynomial regression model was developed with three topographic and locational variables as the best predictors: altitude, distance, and latitude, which can explain up to 74% of variance of the residual errors. This means that radar measurement errors are not only a cause of random variation, but can be partially predicted, which may allow for some type of correction and improvement in radar's accuracy. (en)
Title
  • Analyzing Radar-measured Rainfall vs. Rain Gauges in GIS
  • Analyzing Radar-measured Rainfall vs. Rain Gauges in GIS (en)
skos:prefLabel
  • Analyzing Radar-measured Rainfall vs. Rain Gauges in GIS
  • Analyzing Radar-measured Rainfall vs. Rain Gauges in GIS (en)
skos:notation
  • RIV/68407700:21110/11:00182952!RIV12-MSM-21110___
http://linked.open...avai/predkladatel
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • S
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 186208
http://linked.open...ai/riv/idVysledku
  • RIV/68407700:21110/11:00182952
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • rainfall, rain gauge, radar, GIS, regression, terrain analysis (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...ontrolniKodProRIV
  • [6F2A0F7E63FA]
http://linked.open...v/mistoKonaniAkce
  • Ostrava
http://linked.open...i/riv/mistoVydani
  • Ostrava
http://linked.open...i/riv/nazevZdroje
  • Proceedings - Symposium GIS Ostrava 2011
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...UplatneniVysledku
http://linked.open...iv/tvurceVysledku
  • Müller, Arnošt
http://linked.open...vavai/riv/typAkce
http://linked.open.../riv/zahajeniAkce
number of pages
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  • Vysoká škola báňská - Technická univerzita Ostrava
https://schema.org/isbn
  • 978-80-248-2366-9
http://localhost/t...ganizacniJednotka
  • 21110
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