DOI: 10.1175/JCLI-D-16-0479.1
Scopus记录号: 2-s2.0-85018982519
论文题名: The global ocean water cycle in atmospheric reanalysis, satellite, and ocean salinity
作者: Yu L. ; Jin X. ; Josey S.A. ; Lee T. ; Kumar A. ; Wen C. ; Xue Y.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期: 10 起始页码: 3829
结束页码: 3852
语种: 英语
Scopus关键词: Atmospheric structure
; Evaporation
; Oceanography
; Precipitation (chemical)
; Rain
; Satellites
; Tropics
; Water
; Atmospheric reanalysis
; Hydrologic cycles
; Reanalysis
; Salinity
; Satellite products
; Standard deviation
; Uncertainty structure
; Water budget
; Budget control
英文摘要: This study provides an assessment of the uncertainty in ocean surface (OS) freshwater budgets and variability using evaporation E and precipitation P from 10 atmospheric reanalyses, two combined satellite-based E - P products, and two observation-based salinity products. Three issues are examined: the uncertainty level in the OS freshwater budget in atmospheric reanalyses, the uncertainty structure and association with the global ocean wet/dry zones, and the potential of salinity in ascribing the uncertainty in E - P. The products agree on the global mean pattern but differ considerably in magnitude. The OS freshwater budgets are 129 ± 10 (8%) cm yr-1 for E, 118 ± 11 (9%) cm yr-1 for P, and 11 ± 4 (36%) cm yr-1 for E - P, where the mean and error represent the ensemble mean and one standard deviation of the ensemble spread. The E - P uncertainty exceeds the uncertainty in E and P by a factor of 4 or more. The large uncertainty is attributed to P in the tropical wet zone. Most reanalyses tend to produce a wider tropical rainband when compared to satellite products, with the exception of two recent reanalyses that implement an observation-based correction for the model-generated P over land. The disparity in the width and the extent of seasonal migrations of the tropical wet zone causes a large spread in P, implying that the tropical moist physics and the realism of tropical rainfall remain a key challenge. Satellite salinity appears feasible to evaluate the fidelity of E - P variability in three tropical areas, where the uncertainty diagnosis has a global indication. © 2017 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49697
Appears in Collections: 气候变化事实与影响
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作者单位: Woods Hole Oceanographic Institution, Woods Hole, MA, United States; National Oceanography Centre, Southampton, United Kingdom; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Climate Prediction Center, NCEP/NWS/NOAA, College Park, MD, United States; Innovim, Greenbelt, MD, United States
Recommended Citation:
Yu L.,Jin X.,Josey S.A.,et al. The global ocean water cycle in atmospheric reanalysis, satellite, and ocean salinity[J]. Journal of Climate,2017-01-01,30(10)