| DOI: | 10.1175/JCLI-D-12-00388.1
|
| Scopus记录号: | 2-s2.0-84879004193
|
| 论文题名: | Effects of stochastic ice strength perturbation on arctic finite element sea ice modeling |
| 作者: | Juricke S.; Lemke P.; Timmermann R.; Rackow T.
|
| 刊名: | Journal of Climate
|
| ISSN: | 8948755
|
| 出版年: | 2013
|
| 卷: | 26, 期:11 | | 起始页码: | 3785
|
| 结束页码: | 3802
|
| 语种: | 英语
|
| Scopus关键词: | Ice-ocean models
; Interannual variability
; Multi-year ices
; Sea ice modeling
; Spatial correlations
; Symmetric perturbations
; Time correlations
; Uncorrelated noise
; Computer simulation
; Finite element method
; Sea ice
; annual variation
; computer simulation
; correlation
; finite element method
; Markov chain
; parameterization
; sea ice
; spatial analysis
; stochasticity
; Arctic
; Greenland
|
| 英文摘要: | The ice strength parameter P* is a key parameter in dynamic/thermodynamic sea ice models that cannot be measured directly. Stochastically perturbing P* in the Finite Element Sea Ice-Ocean Model (FESOM) of the Alfred Wegener Institute aims at investigating the effect of uncertainty pertaining to this parameterization. Three different approaches using symmetric perturbations have been applied: 1) reassignment of uncorrelated noise fields to perturb P* at every grid point, 2) aMarkov chain time correlation, and 3) aMarkov chain time correlation with some spatial correlation between nodes. Despite symmetric perturbations, results show an increase of Arctic sea ice volume and a decrease of Arctic sea ice area for all three approaches. In particular, the introduction of spatial correlation leads to a substantial increase in sea ice volume and mean thickness. The strongest response can be seen for multiyear ice north of the Greenland coast. An ensemble of eight perturbed simulations generates a spread in the multiyear ice comparable to the interannual variability ofthe model. Results cannot be reproduced by a simple constant global modification of P*. ©2013 American Meteorological Society. |
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/51864
|
| Appears in Collections: | 气候变化事实与影响
|
|
There are no files associated with this item.
|
|
作者单位: | Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany
|
| Recommended Citation: | |
Juricke S.,Lemke P.,Timmermann R.,et al. Effects of stochastic ice strength perturbation on arctic finite element sea ice modeling[J]. Journal of Climate,2013-01-01,26(11)
|
|
|