Validation study of TMPA 3B42V6 in a typical alpine and gorge region: Jinsha River basin, China

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地环境演变与生态调控实验室

	Validation study of TMPA 3B42V6 in a typical alpine and gorge region: Jinsha River basin, China
	Yang, Y. C.1,2,3; Cheng, G. W.1 ; Fan, J. H.1; Li, W. P.1,2,4 ; Sun, J.1,2; Sha, Y. K.1,2
刊名	NATURAL HAZARDS AND EARTH SYSTEM SCIENCES
	2013
卷号	13 期号:12 页码:3479-3492
关键词	gorge region:
ISSN号	1561-8633
通讯作者	G. W. Cheng（程根伟）
英文摘要	Because of density and distribution flaws inherent with in situ rainfall measurements, satellite-based rainfall products, especially the Tropical Rainfall Measuring Mission (TRMM), were expected to offer an alternative or complement for modeling of hydrological processes and water balance analysis. This study aims at evaluating the validity of a standard product, the TRMM Multi-satellite Precipitation Analysis (TMPA) 3B42V6, by comparing it with in situ ground gauge datasets on a typical alpine and gorge region in China, the Jinsha River basin. The validation study involved the performance of the 3B42V6 product on 3 h, daily and monthly temporal scales. Statistical analysis methods were used for rainfall and rain event estimation. The results affirmed that the 3B42V6 product demonstrated increasing accuracy when the temporal scales were increased from 3 h to daily to monthly. The mean correlation coefficient of rainfall time series between the 3B42V6 product and the gauge over the Jinsha River basin reached 0.34 on the 3 h scale, 0.59 on the daily scale, and 0.90 on the monthly scale. The mean probability of detection (POD) of the 3B42V6 product reached 0.34 on the 3 h scale and 0.63 on the daily scale. The 3B42V6 product of 80.4% of stations obtained an acceptable bias (+/- 25 %) over the investigation area. A threshold of nearly 5.0 mm d(-1) in daily rainfall intensity split the 3B42V6 product into overestimates (< 5.0 mm d(-1)) and underestimates (> 5.0 mm d(-1)). The terrain elements of altitude, longitude, and latitude were the major influencing factors for 3B42V6 performance. In brief, the 3B42V6 dataset has great potential for research on hydrologic processes, especially daily or large temporal scale. As for fine temporal scale applications, such as flood predictions based on a 3 h scale dataset, it is necessary to conduct adjustments or to combine the 3B42V6 product with gauges to be more accurate regarding the issues in the study area or in analogous regions with complicated terrains.
学科主题	自然地理学
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Water Resources
研究领域[WOS]	Geology ; Meteorology & Atmospheric Sciences ; Water Resources
关键词[WOS]	PRECIPITATION ANALYSIS TMPA ; SATELLITE-OBSERVATIONS ; DIURNAL CYCLE ; TRMM ; RAINFALL ; PERFORMANCE ; FREQUENCY ; INTENSITY ; PRODUCTS ; MODEL
收录类别	SCI
语种	英语
WOS记录号	WOS:000329062900030
公开日期	2013-12-31
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/6738]
专题	山地环境演变与生态调控实验室成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
作者单位	1.Univ Chinese Acad Sci, Key Lab Mt Environm Evolut & Its Regulat, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Guangxi Univ, Coll Civil Engn & Architecture, Nanning 530004, Peoples R China 4.China West Normal Univ, Land & Resource Coll, Nanchong 637002, Peoples R China
推荐引用方式 GB/T 7714	Yang, Y. C.,Cheng, G. W.,Fan, J. H.,et al. Validation study of TMPA 3B42V6 in a typical alpine and gorge region: Jinsha River basin, China[J]. NATURAL HAZARDS AND EARTH SYSTEM SCIENCES,2013,13(12):3479-3492.
APA	Yang, Y. C.,Cheng, G. W.,Fan, J. H.,Li, W. P.,Sun, J.,&Sha, Y. K..(2013).Validation study of TMPA 3B42V6 in a typical alpine and gorge region: Jinsha River basin, China.NATURAL HAZARDS AND EARTH SYSTEM SCIENCES,13(12),3479-3492.
MLA	Yang, Y. C.,et al."Validation study of TMPA 3B42V6 in a typical alpine and gorge region: Jinsha River basin, China".NATURAL HAZARDS AND EARTH SYSTEM SCIENCES 13.12(2013):3479-3492.