DOI: 10.1175/JCLI-D-15-0519.1
Scopus记录号: 2-s2.0-84982743524
论文题名: Simulating the role of surface forcing on observed multidecadal upper-ocean salinity changes
作者: Lago V. ; Wijffels S.E. ; Durack P.J. ; Church J.A. ; Bindoff N.L. ; Marsland S.J.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期: 15 起始页码: 5575
结束页码: 5588
语种: 英语
Scopus关键词: Global warming
; Density surfaces
; Salinity change
; Surface changes
; Surface forcing
; Surface salinities
; Surface warming
; Temperature changes
; Three-dimensional patterns
; Oceanography
; air-sea interaction
; climate effect
; climate forcing
; comparative study
; decadal variation
; global warming
; sea surface salinity
; sea surface temperature
; upper ocean
英文摘要: The ocean's surface salinity field has changed over the observed record, driven by an intensification of the water cycle in response to global warming. However, the origin and causes of the coincident subsurface salinity changes are not fully understood. The relationship between imposed surface salinity and temperature changes and their corresponding subsurface changes is investigated using idealized ocean model experiments. The ocean's surface has warmed by about 0.58C (50 yr)-1 while the surface salinity pattern has amplified by about 8% per 50 years. The idealized experiments are constructed for a 50-yr period, allowing a qualitative comparison to the observed salinity and temperature changes previously reported. The comparison suggests that changes in both modeled surface salinity and temperature are required to replicate the three-dimensional pattern of observed salinity change. The results also show that the effects of surface changes in temperature and salinity act linearly on the changes in subsurface salinity. Surface salinity pattern amplification appears to be the leading driver of subsurface salinity change on depth surfaces; however, surface warming is also required to replicate the observed patterns of change on density surfaces. This is the result of isopycnal migration modified by the ocean surface warming, which produces significant salinity changes on density surfaces. © 2016 American Meteorological Society. 资助项目: CSIRO, Commonwealth Scientific and Industrial Research Organisation
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50173
Appears in Collections: 气候变化事实与影响
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作者单位: Centre for Australian Weather and Climate Research, CSIRO Oceans and Atmosphere, Hobart, TAS, Australia; Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS, Australia; Program for Climate Model Diagnosis and Intercomparison, Lawrence Livermore National Laboratory, Livermore, CA, United States; Antarctic Climate and Ecosystems Cooperative Research Centre, Hobart, TAS, Australia; Centre for Australian Weather and Climate Research, CSIRO Oceans and Atmosphere Flagship, Aspendale, VIC, Australia
Recommended Citation:
Lago V.,Wijffels S.E.,Durack P.J.,et al. Simulating the role of surface forcing on observed multidecadal upper-ocean salinity changes[J]. Journal of Climate,2016-01-01,29(15)