| DOI: | 10.1175/JCLI-D-16-0626.1
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| Scopus记录号: | 2-s2.0-85021064239
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| 论文题名: | In search of fingerprints of the recent intensification of the ocean water cycle |
| 作者: | Vinogradova N.T.; Ponte R.M.
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| 刊名: | Journal of Climate
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| ISSN: | 8948755
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| 出版年: | 2017
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| 卷: | 30, 期:14 | | 起始页码: | 5513
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| 结束页码: | 5528
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| 语种: | 英语
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| Scopus关键词: | Atmospheric thermodynamics
; Budget control
; Climate change
; Rain
; Salinity measurement
; Water
; Atmosphere-ocean interactions
; Decadal variability
; Freshwater
; Hydrologic cycles
; Ocean dynamics
; Trends
; Oceanography
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| 英文摘要: | Unprecedented changes in Earth's water budget and a recent boom in salinity observations prompted the use of long-term salinity trends to fingerprint the amount of freshwater entering and leaving the oceans (the ocean water cycle). Here changes in the ocean water cycle in the past two decades are examined to evaluate whether the rain-gauge notion can be extended to shorter time scales. Using a novel framework it is demonstrated that there have been persistent changes (defined as significant trends) in both salinity and the ocean water cycle in many ocean regions, including the subtropical gyres in both hemispheres, low latitudes of the tropical Pacific, the North Atlantic Subpolar Gyre, and the Arctic Ocean. On average, the ocean water cycle has amplified by approximately 5% since 1993, but strong regional variations exist (as well as dependency on the surface freshwater flux products chosen). Despite an intensified ocean water cycle in the last two decades, changes in surface salinity do not follow expected patterns of amplified salinity contrasts, challenging the perception that if it rains more the seas always get fresher and if it evaporates more the seas always get saltier. These findings imply a time of emergence of anthropogenic hydrological signals shorter in surface freshwater fluxes than in surface salinity and point to the importance of ocean circulation, salt transports, and natural climate variability in shaping patterns of decadal change in surface salinity. Therefore, the use of salinity measurements in conjunction with ocean salt fluxes can provide a more meaningful way of fingerprinting changes in the global water cycle on decadal time scales. © 2017 American Meteorological Society. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/48870
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| Appears in Collections: | 气候变化与战略
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作者单位: | Cambridge Climate Institute, Boston, MA, United States; Atmospheric and Environmental Research, Lexington, MA, United States
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| Recommended Citation: | |
Vinogradova N.T.,Ponte R.M.. In search of fingerprints of the recent intensification of the ocean water cycle[J]. Journal of Climate,2017-01-01,30(14)
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