Arid
DOI10.1016/j.jhydrol.2017.03.008
An assessment of differences in gridded precipitation datasets in complex terrain
Henn, Brian1,6; Newman, Andrew J.2; Livneh, Ben3,4; Daly, Christopher5; Lundquist, Jessica D.1
通讯作者Henn, Brian
来源期刊JOURNAL OF HYDROLOGY
ISSN0022-1694
EISSN1879-2707
出版年2018
卷号556页码:1205-1219
英文摘要

Hydrologic modeling and other geophysical applications are sensitive to precipitation forcing data quality, and there are known challenges in spatially distributing gauge-based precipitation over complex terrain. We conduct a comparison of six high-resolution, daily and monthly gridded precipitation datasets over the Western United States. We compare the long-term average spatial patterns, and interannual variability of water-year total precipitation, as well as multi-year trends in precipitation across the data sets. We find that the greatest absolute differences among datasets occur in high-elevation areas and in the maritime mountain ranges of the Western United States, while the greatest percent differences among datasets relative to annual total precipitation occur in arid and rain-shadowed areas. Differences between datasets in some high-elevation areas exceed 200 mm yr(-1) on average, and relative differences range from 5 to 60% across the Western United States. In areas of high topographic relief, true uncertainties and biases are likely higher than the differences among the datasets; we present evidence of this based on streamflow observations. Precipitation trends in the datasets differ in magnitude and sign at smaller scales, and are sensitive to how temporal inhomogeneities in the underlying precipitation gauge data are handled. (C) 2017 Elsevier B.V. All rights reserved.


英文关键词Precipitation Hydroclimatology Gridded forcing data Orographic enhancement Uncertainty Climate trends
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000423641300093
WOS关键词HYDROLOGICALLY BASED DATASET ; LAND-SURFACE FLUXES ; WINTER PRECIPITATION ; SIERRA-NEVADA ; TEMPERATURE ; SNOW ; VARIABILITY ; PATTERNS ; NETWORK ; TRENDS
WOS类目Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向Engineering ; Geology ; Water Resources
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/211043
作者单位1.Univ Washington, Dept Civil & Environm Engn, Seattle, WA USA;
2.Natl Ctr Atmospher Res, Res Applicat Lab, POB 3000, Boulder, CO 80307 USA;
3.Univ Colorado, Dept Civil Environm & Architectural Engn, Boulder, CO 80309 USA;
4.Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO USA;
5.Oregon State Univ, PRISM Climate Grp, Northwest Alliance Computat Sci & Engn, Sch Chem Biol & Environm Engn, Corvallis, OR USA;
6.Univ Calif San Diego, Ctr Western Weather & Water Extremes, Scripps Inst Oceanog, La Jolla, CA 92093 USA
推荐引用方式
GB/T 7714
Henn, Brian,Newman, Andrew J.,Livneh, Ben,et al. An assessment of differences in gridded precipitation datasets in complex terrain[J],2018,556:1205-1219.
APA Henn, Brian,Newman, Andrew J.,Livneh, Ben,Daly, Christopher,&Lundquist, Jessica D..(2018).An assessment of differences in gridded precipitation datasets in complex terrain.JOURNAL OF HYDROLOGY,556,1205-1219.
MLA Henn, Brian,et al."An assessment of differences in gridded precipitation datasets in complex terrain".JOURNAL OF HYDROLOGY 556(2018):1205-1219.
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