气候变化领域集成服务门户(CCPortal): A global climatology of the ocean surface during the Last Glacial Maximum mapped on a regular grid (GLOMAP)

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DOI	10.5194/cp-17-805-2021
	A global climatology of the ocean surface during the Last Glacial Maximum mapped on a regular grid (GLOMAP)
	Paul A.; Mulitza S.; Stein R.; Werner M.
发表日期	2021
ISSN	1814-9324
起始页码	729
结束页码	742
卷号	17 期号:2
英文摘要	We present a climatology of the near-sea-surface temperature (NSST) anomaly and the sea-ice extent during the Last Glacial Maximum (LGM, 23 000-19 000 years before present) mapped on a global regular grid. It is an extension of the Glacial Atlantic Ocean Mapping (GLAMAP) reconstruction of the Atlantic NSST based on the faunal and floral assemblage data of the Multiproxy Approach for the Reconstruction of the Glacial Ocean Surface (MARGO) project and several recent estimates of the LGM sea-ice extent. Such a gridded climatology is highly useful for the visualization of the LGM climate, calculation of global and regional NSST averages, and estimation of the equilibrium climate sensitivity, as well as a boundary condition for atmospheric general circulation models. The gridding of the sparse NSST reconstruction was done in an optimal way using the Data-Interpolating Variational Analysis (DIVA) software, which takes into account the uncertainty in the reconstruction and includes the calculation of an error field. The resulting Glacial Ocean Map (GLOMAP) confirms the previous findings by the MARGO project regarding longitudinal and meridional NSST differences that were greater than today in all oceans. Taken at face value, the estimated global and tropical cooling would imply an equilibrium climate sensitivity at the lower end of the currently accepted range. However, because of anticipated changes in the seasonality and thermal structure of the upper ocean during the LGM as well as uneven spatial sampling, the estimated cooling and implied climate sensitivity are likely to be biased towards lower values. © Author(s) 2021.
来源期刊	Climate of the Past
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/183585
作者单位	Marum - Center for Marine Environmental Sciences, Department of Geosciences, University of Bremen, Bremen, Germany; Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI), Bremerhaven, Germany
推荐引用方式 GB/T 7714	Paul A.,Mulitza S.,Stein R.,et al. A global climatology of the ocean surface during the Last Glacial Maximum mapped on a regular grid (GLOMAP)[J],2021,17(2).
APA	Paul A.,Mulitza S.,Stein R.,&Werner M..(2021).A global climatology of the ocean surface during the Last Glacial Maximum mapped on a regular grid (GLOMAP).Climate of the Past,17(2).
MLA	Paul A.,et al."A global climatology of the ocean surface during the Last Glacial Maximum mapped on a regular grid (GLOMAP)".Climate of the Past 17.2(2021).