| DOI: | 10.1175/JCLI-D-13-00373.1
|
| Scopus记录号: | 2-s2.0-84892497051
|
| 论文题名: | Mechanisms of global-mean steric sea level change |
| 作者: | Piecuch C.G.; Ponte R.M.
|
| 刊名: | Journal of Climate
|
| ISSN: | 8948755
|
| 出版年: | 2014
|
| 卷: | 27, 期:2 | | 起始页码: | 824
|
| 结束页码: | 834
|
| 语种: | 英语
|
| Scopus关键词: | Atmospheric forcing
; Freshwater contents
; Large-scale advection
; Numerical experiments
; Ocean general circulation models
; Potential temperature
; Regional distribution
; Volumetric expansion
; Equations of state
; Water
; Sea level
; advection-diffusion equation
; atmospheric forcing
; equation of state
; oceanic general circulation model
; potential temperature
; salinity
; sea level change
; seawater
|
| 英文摘要: | Global-mean sea level change partly reflects volumetric expansion of the oceans because of density change, otherwise known as global-mean steric sea level change. Owing to nonlinearities in the equation of state of seawater, the nature of processes contributing to recent observed global-mean steric sea level changes has not been well understood. Using a data-constrained ocean state estimate, global-mean steric sea level change over 1993-2003 is revisited, and contributions from ocean transports and surface exchanges are quantified using closed potential temperature and salinity budgets. Analyses demonstrate that estimated decadal global-mean steric sea level change results mainly from a slight, time-mean imbalance between atmospheric forcing and ocean transports over the integration period: surface heat and freshwater exchanges produce a trend in globalmean steric sea level that is mainly offset by the redistribution of potential temperature and salinity through small-scale diffusion and large-scale advection. A set of numerical experiments demonstrates that globalmean steric sea level changes simulated by ocean general circulation models are sensitive to the regional distribution of ocean heat and freshwater content changes. © 2014 American Meteorological Society. |
| 资助项目: | NSF, National Science Foundation
|
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/51420
|
| Appears in Collections: | 气候变化事实与影响
|
|
There are no files associated with this item.
|
|
作者单位: | Atmospheric and Environmental Research, Lexington, MA, United States
|
| Recommended Citation: | |
Piecuch C.G.,Ponte R.M.. Mechanisms of global-mean steric sea level change[J]. Journal of Climate,2014-01-01,27(2)
|
|
|