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http://dx.doi.org/10.3741/JKWRA.2008.41.5.545

Sampling Error of Areal Average Rainfall due to Radar Partial Coverage  

Yoo, Chul-Sang (Department of Civil, Environmental and Architectural Engineering, Korea University)
Ha, Eun-Ho (Department of Information and Statistics, College of Liberal Arts and Sciences, Yonsei University)
Kim, Byoung-Soo (Dohwa Consulting Engineers Co., LTD.)
Kim, Kyoung-Jun (Department of Civil, Environmental and Architectural Engineering, Korea University)
Choi, Jeong-Ho (Department of Civil, Environmental and Architectural Engineering, Korea University)
Publication Information
Journal of Korea Water Resources Association / v.41, no.5, 2008 , pp. 545-558 More about this Journal
Abstract
This study estimated the error involved in the areal average rainfall derived from incomplete radar information due to radar partial coverage of a basin or sub-basin. This study considers the Han-River Basin as an application example for the rainfall observation using the Ganghwa rain radar. Among the total of 20 mid-sized sub-basins of the Han-River Basin evaluated in this study, only five sub-basins are fully covered by the radar and three are totally uncovered. Remaining 12 sub-basins are partially covered by the radar to result in incomplete radar information available. When only partial radar information is available, the sampling error decreases proportional to the size of the radar coverage, which also varies depending on the number of clusters. Conditioned that the total area coverage remains the same, the sampling error decreases as the number of clusters increases. This study estimated the sampling error of the areal average rainfall of partially-covered mid-sized sub-basins of the Han- River Basin, and the results show that the sampling error could be at least several % to maximum tens % depending on the relative coverage area.
Keywords
Radar Rainfall; Partial Coverage; Areal Average Rainfall; Sampling Error;
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Times Cited By KSCI : 5  (Citation Analysis)
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1 Yoo, C., Ha, E., and Shin, S.C. (2002). "Model vs. design sensitivity to the groundtruth problem of rainfall observation." Advances in Water Resources, Vol. 25, No. 6, pp. 651-661   DOI   ScienceOn
2 Steiner, M., Smith, J.A., Burges, S.J., Alonso, C.V., and Darden, R.W. (1999). "Effect of bias adjustment and rain gauge data quality control on radar rainfall estimation." Water Resources Research, Vol. 35, No. 8, pp. 2487-2503   DOI
3 Yoo, C. (2001). "Sampling of soil moisture fields and related errors: Implications to the optimal sampling design." Advances in Water Resources, Vol. 24, No. 5, pp. 521-530   DOI   ScienceOn
4 Seo, D.J. (1998a). "Realtime estimation of rainfall fields using rain gage data under fractional coverage conditions." Journal of Hydrology, Vol. 208, pp. 25-36   DOI   ScienceOn
5 Seo, D.J. (1998b). "Realtime estimation of rainfall fields using radar rainfall and rain gage data." Journal of Hydrology, Vol. 208, pp. 37-52   DOI   ScienceOn
6 Short, D.A. and North, G.R. (1990). "The beam filling error in ESMR5 observations of GATE rainfall." Journal of Geophysics, Vol. 95, pp. 2187-2193   DOI
7 Valdes, J.B., Nakamoto, S., Shen, S.S.P., and North, G.R. (1990). "Estimation of multidimensional precipitation parameters by areal estimates of oceanic rainfall." Journal of Geophysicsal Research, Vol. 95, No. D3, pp. 2101-2111   DOI
8 Waymire, E., Gupta, V.K., and RodriguezIturbe, I. (1984). "Spectral theory of rainfall intensity at the mesoscale." Water Resources Research, Vol. 20, No. 10, pp. 1453-1465   DOI
9 Yoo, C. (2000). "On the sampling errors from raingauges and microwave attenuation measurements." Stochastic Environmental Research and Risk Assessment, Vol. 14, pp. 69-77   DOI
10 Yoo, C. (2002). "A ground validation problem of the remotely sensed soil moisture data." Stochastic Environmental Research and Risk Assessment, Vol. 16, No. 3, pp. 175-187   DOI
11 Yoo, C. and Ha, E. (2001). "Multidimensional precipitation models and their application to the groundtruth problem: Multiple raingauge case." Water Engineering, Vol. 5, No. 1, pp. 51-58
12 Ha, E., North, G.R., Yoo, C., and Ha, K. (2002). "Evaluation of some ground truth designs for satellite estimates of rain rate." Journal of Atmospheric and Oceanic Technology, Vol. 19, No. 1, pp. 65-73   DOI   ScienceOn
13 Yoo, C., Valdes, J.B., and North, G.R. (1996). "Stochastic modeling of multidimensional precipitation fields considering spectral structures." Water Resources Research, Vol. 32, No. 7, pp. 2175-2187   DOI   ScienceOn
14 Damant, C., Austin, G.L., Bellon, A., and Broughton, R.S. (1983). "Errors in the Thiessen technique for estimating areal rain amounts using weather radar data." Journal of Hydrology, Vol. 62, pp. 81-94   DOI   ScienceOn
15 Gabella, M. and Perona, G. (1998). "Simulation of the orographic influence on weather radar using a geometricoptics approach." Journal of Atmospheric and Oceanic Technology, Vol. 15, No. 6, pp. 1485-1494   DOI   ScienceOn
16 Joss, J. and Waldvogel, A. (1990). "Precipitation measurements and hydrology." In Radar in Meteorology, Battan Memorial and 40th Anniversary Radar Meteorology Conference, Ed. D. Atlas, American Meteorological Society, pp. 577-606
17 Kummerow, C. (1998). "Beam filling errors in passive microwave rainfall retrievals." Journal of Applied Meteorology, Vol. 37, pp. 356.370   DOI   ScienceOn
18 North, G.R. and Nakamoto, S. (1989). "Formalism for comparing rain estimation designs." Journal of Atmospheric and Oceanic Technology, Vol. 6, No. 6, pp. 985-992   DOI
19 North, G.R., Shen, S.S.P., and Upson, R.B. (1991). "Combining rain gages with satellite measurements for optimal estimates of areatime averaged rain rates." Water Resources Research, Vol. 27, No. 10, pp. 2785-2790   DOI
20 Seed, A., Siriwardena, L., Sun, X., Jordan, P., and Elliot, J. (2002). On the Calibration of Australian Weather Radars. Report 02/7, ISBN 1-876006-88-9, Cooperative Research Center for Catchment Hydrology, p. 40
21 유철상, 김병수, 김경준, 최정호 (2007). “우량계 강우를 이용한 레이더 강우의 GroundTruth방법 검토.” 한국수자원학회논문집, 한국수자원학회, 제40권, 제9호, pp. 743-754   DOI
22 유철상, 하은호, 김경준 (2006). “강우의 공간상관구조에 대한 무강우자료의 영향.” 한국수자원학회논문집, 한국수자원학회, 제39권, 제2호, pp. 127-138   과학기술학회마을   DOI
23 정성화 (2005). 레이더 강우강도의 개성과 면적 강우량의 실시간 추정, 석사학위 논문, 경북대학교,p. 49
24 한국수자원공사 (2004). 전국하천 수자원.환경기초조사 종합계획, p. 345
25 Anagnostou, E.N., Krajewski, W.F., Seo, D.J., and Johnson, E.R. (1998). "Meanfield rainfall bias studies for WSR88D." Journal of Hydrologic Engineering, Vol. 3, No. 3, pp. 149-159   DOI   ScienceOn
26 AzimiZonooz, A., Krajewski, W. F. and Bowles, D.S. (1989). "Spatial rainfall estimation by linear and non-linear co-kriging of radar-rainfall and raingage data." Stochastic Hydrology and Hydraulics, Vol. 3, pp. 51-67   DOI
27 Bech, J,, Bernat, C., Lorente, J., and Bebbington, D. (2003). "The sensitivity of single polarization weather radar beam blockage correction to variability in the vertical refractivity gradient." Journal of Atmospheric and Oceanic Technology, Vol. 20, No. 6, pp. 845-855   DOI   ScienceOn
28 Chiu, L.S., North, G.R., McConnel, A. and Short, D.A. (1990). "Rain estimation from satellite: effects of finite field of view." Journal of Geophysical Research, Vol. 95, pp. 2177.2186   DOI
29 Lafont, D. and Guillemet, B. (2004). "Subpixel fractional cloud cover and inhomogeneity effects on microwave beam-filling error." Atmospheric Research, Vol. 72, pp. 149-168   DOI   ScienceOn
30 North, G.R., Valdes, J.B., Ha, E., and Shen, S.S.P. (1994). "The ground truth problem for setellite estimates of rainrate." Journal of Atmospheric and Oceanic Technology, Vol. 11, No. 4, pp. 1035-1041   DOI   ScienceOn
31 국가수자원관리정보시스템 홈페이지. http://www.wamis.go.kr
32 Creutin, J.D., Andrieu, H., and Faure, D. (1997). "Use of a weather radar for the hydrology of a mountainous area. Part II: radar measurement validation." Journal of Hydrology, Vol. 193, pp. 26-44   DOI   ScienceOn
33 건설교통부 (1997). 임진강유역 종합수문관측망 타당성조사 및 기본계획수립, p. 316
34 건설교통부 (2002). 수문관측효율성 제고방안 연구용역(2단계) 보고서
35 김경준, 유철상 (2007). “강우공간상관구조의 변동특성.” 한국수자원학회논문집, 한국수자원학회, 제40권, 제12호, pp. 943-956   DOI
36 유철상, 김경준 (2007). “강우 레이더와 지상 우량계의 통합관측효과.” 한국수자원학회논문집, 한국수자원학회, 제40권, 11호, pp. 841-849   과학기술학회마을   DOI
37 최규현, 한건연, 김광섭, 이창희 (2006). “레이더 정량강우와 연계한 홍수유출 및 범람해석 시스템확립: II. Cokriging을 이용한 2차원 정량강우 산정.” 한국수자원학회논문집, 한국수자원학회, 제39권, 제4호, pp. 335-346   과학기술학회마을   DOI
38 Ha, E. and North, G.R. (1995). "Model studies of the beamfilling error for rainrate retrieval with microwave radiometers." Journal of Atmospheric and Oceanic Technology, Vol. 12, pp. 268-281   DOI   ScienceOn
39 유철상 (1997). “관측오차문제에 대한 다차원 강우모형의 적용.” 한국수자원학회논문집, 한국수자원학회, 제30권, 제5호, pp. 441-447   과학기술학회마을
40 유철상, 정광식 (2001). “면적 평균 강우량의 추정 및 추정오차.” 한국수자원학회논문집, 한국수자원학회, 제34권, 제4호, pp. 317-326
41 Andrieu, H., Creutin, J.D. and Faure, D. (1997). "Use of weather radar for hydroloy of a mountainous area. Part 1: radar measurement interpretation." Journal of Hydrology, Vol. 913, pp. 1-25   DOI   ScienceOn