globalchange  > 气候变化事实与影响
DOI: 10.1175/JCLI-D-14-00519.1
Scopus记录号: 2-s2.0-84949936836
论文题名:
Continuous estimate of Atlantic oceanic freshwater flux at 26.5°N
作者: McDonagh E.L.; King B.A.; Bryden H.L.; Courtois P.; Szuts Z.; Baringer M.; Cunningham S.A.; Atkinson C.; McCarthy G.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期:22
起始页码: 8888
结束页码: 8906
语种: 英语
Scopus关键词: Time series ; Freshwater ; Freshwater fluxes ; Historical analysis ; Linear relationships ; Meridional overturning circulations ; Salinity ; Standard deviation ; Western boundary ; Water
英文摘要: The first continuous estimates of freshwater flux across 26.5°N are calculated using observations from the RAPID-MOCHA-Western Boundary Time Series (WBTS) and Argo floats every 10 days between April 2004 and October 2012. The mean plus or minus the standard deviation of the freshwater flux (FW) is -1.17 ± 0.20 Sv (1 Sv = 106 m3 s-1; negative flux is southward), implying a freshwater divergence of -0.37 ± 0.20 Sv between the Bering Strait and 26.5°N. This is in the sense of an input of 0.37 Sv of freshwater into the ocean, consistent with a region where precipitation dominates over evaporation. The sign and the variability of the freshwater divergence are dominated by the overturning component (-0.78 ± 0.21 Sv). The horizontal component of the freshwater divergence is smaller, associated with little variability and positive (0.35 ± 0.04 Sv). A linear relationship, describing 91% of the variance, exists between the strength of the meridional overturning circulation (MOC) and the freshwater flux (-0.37 - 0.047 Sv of FW per Sverdrups of MOC). The time series of the residual to this relationship shows a small (0.02 Sv in 8.5 yr) but detectable decrease in the freshwater flux (i.e., an increase in the southward freshwater flux) for a given MOC strength. Historical analyses of observations at 24.5°N are consistent with a more negative freshwater divergence from -0.03 to -0.37 Sv since 1974. This change is associated with an increased southward freshwater flux at this latitude due to an increase in the Florida Straits salinity (and therefore the northward salinity flux). © 2015 American Meteorological Society.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50490
Appears in Collections:气候变化事实与影响

Files in This Item:

There are no files associated with this item.


作者单位: National Oceanography Centre, University of Southampton, Waterfront Campus, Southampton, United Kingdom; Ocean and Earth Science, National Oceanography Centre, University of Southampton, Empress Dock, Southampton, United Kingdom; Max Planck Institute for Meteorology, Hamburg, Germany; Physical Oceanography Division, NOAA/Atlantic Oceanographic and Meteorological Laboratory, Miami, FL, United States; Scottish Association of Marine Science, Scottish Marine Institute, Oban, United Kingdom; Applied Physics Laboratory, University of Washington, Seattle, WA, United States; Met Office Hadley Centre, Exeter, Devon, United Kingdom

Recommended Citation:
McDonagh E.L.,King B.A.,Bryden H.L.,et al. Continuous estimate of Atlantic oceanic freshwater flux at 26.5°N[J]. Journal of Climate,2015-01-01,28(22)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[McDonagh E.L.]'s Articles
[King B.A.]'s Articles
[Bryden H.L.]'s Articles
百度学术
Similar articles in Baidu Scholar
[McDonagh E.L.]'s Articles
[King B.A.]'s Articles
[Bryden H.L.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[McDonagh E.L.]‘s Articles
[King B.A.]‘s Articles
[Bryden H.L.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.