搜索结果: 1-11 共查到“地球科学总论 weather radar”相关记录11条 . 查询时间(0.024 秒)
Preliminary evaluation of polarimetric parameters from a new dual-polarization C-band weather radar in an alpine region
Preliminary evaluation of polarimetric parameters new dual-polarization C-band weather radar alpine region
2010/9/10
The first operational weather radar with dual polarization capabilities was recently installed in Austria. The use of polarimetric radar variables rises several expectations: an increased accuracy of ...
Overview of the Greater Lyon weather radar advances from 90's to 2008
Overview Greater Lyon weather radar advances
2010/9/10
The local weather radar of Lyon, part of the Aramis network of Meteo-France, is currently located 40 km from the urban community. The measurement quality of this tool is subjected to constant improvem...
Dual-polarization C-band weather radar algorithms for rain rate estimation and hydrometeor classification in an alpine region
Dual-polarization C-band weather rain rate
2010/2/3
Dual polarization is becoming the standard for new weather radar systems. In contrast to conventional weather radars, where the reflectivity is measured in one polarization plane only, a dual polariza...
Rainfall estimation and ground clutter rejection with dual polarization weather radar
Rainfall estimation ground clutter rejection
2010/1/27
Conventional radars, used for atmospheric remote sensing, usually operate at a single polarization and frequency to estimate storm parameters such as rainfallrate and water content.
Hydrometeor classification from dual-polarized weather radar: extending fuzzy logic from S-band to C-band data
Hydrometeor classification dual-polarized weather
2010/1/27
A model-based fuzzy classification method for C-band polarimetric radar data, named Fuzzy Radar Algorithm for Hydrometeor Classification at C-band (FRAHCC), is presented. Membership functions are desi...
Modelling of weather radar echoes from anomalous propagation using a hybrid parabolic equation method and NWP model data
weather radar echoes anomalous propagation hybrid parabolic equation method NWP model data
2009/12/30
Contamination of weather radar echoes by anomalous propagation (anaprop) mechanisms remains a serious issue in quality control of radar precipitation estimates. Although significant progress has been ...
Statistical and neural classifiers in estimating rain rate from weather radar measurements
Statistical and neural classifiers rain rate weather radar measurements
2010/1/26
Weather radars are used to measure the electromagnetic radiation backscattered by cloud raindrops. Clouds that backscatter more electromagnetic radiation consist of larger droplets of rain and therefo...
The combined use of weather radar and geographic information system techniques for flood forecasting
combined use weather radar geographic information system techniques flood forecasting
2010/1/26
A distributed rainfall-runoff model capable for real time flood forecasting utilizing highly spatial and time resolution data was developed. The study region is located under the WSR-74 S-band 100 km ...
Quantitative analysis of X-band weather radar attenuation correction accuracy
Quantitative analysis X-band weather radar attenuation correction accuracy
2009/12/29
At short wavelengths, especially C-, X-, and K-band, weather radar signals are attenuated by the precipitation along their paths. This constitutes a major source of error for radar rainfall estimation...
Characteristics of the 14 April 1999 Sydney hailstorm based on ground observations,weather radar,insurance data and emergency calls
Characteristics Sydney hailstorm ground observations weather radar insurance data emergency calls
2009/12/28
Hailstorms occur frequently in metropolitan Sydney, in the eastern Australian State of New South Wales, which is especially vulnerable due to its building exposure and geographical location. Hailstorm...
Sampling errors in rainfall measurements by weather radar
Sampling errors rainfall measurements weather radar
2010/1/22
Radar rainfall data are affected by several types of error. Beside the error in the measurement of the rainfall reflectivity and its transformation into rainfall intensity, random errors can be genera...