Using microwave links to adjust the radar rainfall field

被引：19

作者：

Cummings, R. J. ^{[1
]}

Upton, G. J. G. ^{[1
]}

Holt, A. R. ^{[1
]}

Kitchen, M. ^{[2
]}

机构：

[1] Univ Essex, Dept Math Sci, Colchester CO4 3SQ, Essex, England

[2] Met Off, Exeter EX1 3PB, Devon, England

来源：

ADVANCES IN WATER RESOURCES | 2009年 / 32卷 / 07期

基金：

英国自然环境研究理事会;

关键词：

Weather radar; Microwave link; Rainfall; DUAL-FREQUENCY; ATTENUATION; BAND; BIAS;

D O I：

10.1016/j.advwatres.2008.08.010

中图分类号：

TV21 [水资源调查与水利规划];

学科分类号：

081501 ;

摘要：

The final stage in processing radar data so as to arrive at an estimated rain field typically involves a comparison of the preliminary radar-derived estimates of hourly rainfall with those observed by ground-based gauges. Often a mean field bias adjustment will then be applied using an age-weighted average of the individual gauge-radar comparisons. In this paper, a mean field bias adjustment is presented that uses the path-integrated rainfall estimates provided by microwave links together with information from gauges. It is shown to be at least as efficient as the current gauge-based procedure used by the UK Met Office to improve the accuracy of radar-based estimates of rainfall at the ground. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1003 / 1010

页数：8

共 24 条

[1]

ATLAS D, 1977, J APPL METEOROL, V16, P1322, DOI 10.1175/1520-0450(1977)016<1322:PAAIRM>2.0.CO

[2]

[3] Path-averaged rainfall estimation using microwave links: Uncertainty due to spatial rainfall variability [J].

Berne, A. ;

Uijlenhoet, R. .

GEOPHYSICAL RESEARCH LETTERS, 2007, 34 (07)

[4] Correcting of real-time radar rainfall bias using a Kalman filtering approach [J].

Chumchean, S ;

Seed, A ;

Sharma, A .

JOURNAL OF HYDROLOGY, 2006, 317 (1-2) :123-137

[5] Comparative study of several gauge adjustment schemes [J].

Gibson, M .

PHYSICS AND CHEMISTRY OF THE EARTH PART B-HYDROLOGY OCEANS AND ATMOSPHERE, 2000, 25 (10-12) :921-926

[6]

GIULI D, 1991, J APPL METEOROL, V30, P1323, DOI 10.1175/1520-0450(1991)030<1323:TRORFT>2.0.CO

[7]

[8] Comparing model and measured rainfall rates obtained from a combination of remotely sensed and in situ observations [J].

Hardaker, PJ ;

Holt, AR ;

Goddard, JWF .

RADIO SCIENCE, 1997, 32 (05) :1785-1796

[9] Rain rates, drop size information, and precipitation type, obtained from one-way differential propagation phase and attenuation along a microwave link [J].

Holt, A. R. ;

Cummings, R. J. ;

Upton, G. J. G. ;

Bradford, W. J. .

RADIO SCIENCE, 2008, 43 (05)

[10] Comparison of the use of dual-frequency and single-frequency attenuation for the measurement of path-averaged rainfall along a microwave link [J].

Holt, AR ;

Kuznetsov, GG ;

Rahimi, AR .

IEE PROCEEDINGS-MICROWAVES ANTENNAS AND PROPAGATION, 2003, 150 (05) :315-320

← 1 2 3 →