DOI: 10.1175/JCLI-D-16-0476.1
Scopus记录号: 2-s2.0-85021116137
论文题名: Using high-resolution reanalysis data to explore localized western north america hydroclimate relationships with ENSO
作者: Heyer J.P. ; Brewer S.C. ; Shinker J.J.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期: 14 起始页码: 5395
结束页码: 5417
语种: 英语
Scopus关键词: Atmospheric pressure
; Climatology
; Nickel
; Tropics
; Watersheds
; Atmosphere-land interactions
; ENSO
; North America
; Synoptic climatology
; Teleconnections
; Oceanography
英文摘要: Many studies have used observational data to explore associations between El Niño-Southern Oscillation (ENSO) and western North America (NA) hydroclimate at regional spatial scales. However, relationships between tropical Pacific sea surface temperature (SST) variability and western NA hydroclimate at local scales using reanalysis data are less understood. Here, the current understanding of relationships between large-scale tropical Pacific SST variability and western NA hydroclimate is extended to localized headwaters. To accomplish this, high-resolution reanalysis data (i.e., monthly mean surface precipitation rate, 2-m temperature, 850-mb specific humidity, and 500-mb omega) were used for gridpoint correlation analyses with Niño-3.4 SST and El Niño Modoki indices. Reanalysis time series data were provided by the National Centers for Environmental Prediction North American Regional Reanalysis (NARR) product. To validate the accuracy of NARR surface data, observational Livneh precipitation and temperature data were used. Resulting correlations between tropical Pacific indices and NARR surface precipitation and 2-m temperature are consistent with previous research both spatially and temporally, indicating that the strongest correlations occur primarily over southwestern NA during the winter (DJF). The results herein demonstrate the potential of high-resolution reanalysis data to reveal distinct correlations over topographically complex watersheds in the U.S. Intermountain West (IMW) over the recent record, 1979-2015. The use of the high-resolution NARR product as a viable option to explore western NA hydroclimate is demonstrated here. © 2017 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/48862
Appears in Collections: 气候变化与战略
There are no files associated with this item.
作者单位: Department of Geography, University of Utah, Salt Lake City, UT, United States; Department of Geography, University of Wyoming, Laramie, WY, United States
Recommended Citation:
Heyer J.P.,Brewer S.C.,Shinker J.J.. Using high-resolution reanalysis data to explore localized western north america hydroclimate relationships with ENSO[J]. Journal of Climate,2017-01-01,30(14)