DOI: 10.5194/cp-10-1145-2014
Scopus记录号: 2-s2.0-84936991758
论文题名: Model-data comparison and data assimilation of mid-Holocene Arctic sea ice concentration
作者: Klein F. ; Goosse H. ; Mairesse A. ; De Vernal A.
刊名: Climate of the Past
ISSN: 18149324
出版年: 2014
卷: 10, 期: 3 起始页码: 1145
结束页码: 1163
语种: 英语
Scopus关键词: atmospheric circulation
; climate modeling
; community structure
; data assimilation
; dinoflagellate
; Holocene
; numerical model
; quantitative analysis
; reconstruction
; sea ice
; Arctic Ocean
; Barents Sea
; Canada Basin
; Chukchi Sea
英文摘要: The consistency between new quantitative reconstructions of Arctic sea ice concentration based on dinocyst assemblages and the results of climate models has been investigated for the mid-Holocene. The response of the models mainly follows the increase in summer insolation, modulated to a limited extent by changes in atmospheric circulation. This leads to differences between regions in the models that are smaller than in the reconstruction. It is, however, impossible to precisely assess the models' skills because the sea ice concentration changes at the mid-Holocene are small in both the reconstructions and the models and of the same order of magnitude as the reconstruction uncertainty. Performing simulations with data assimilation using the model LOVECLIM amplifies the regional differences and improves the model-data agreement as expected. This is mainly achieved through a reduction of the southward winds in the Barents Sea and an increase in the westerly winds in the Canadian Basin, inducing an increase in the ice concentration in the Barents and Chukchi seas. This underlines the potential role of atmospheric circulation in explaining the reconstructed changes during the Holocene. © Author(s) 2014. CC Attribution 3.0 License. 资助项目: UCL, University College London
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49257
Appears in Collections: 气候变化与战略
There are no files associated with this item.
Recommended Citation:
Klein F.,Goosse H.,Mairesse A.,et al. Model-data comparison and data assimilation of mid-Holocene Arctic sea ice concentration[J]. Climate of the Past,2014-01-01,10(3)