Dynamics of the Antarctic Seasonal Ice Zone

GSTDTAP

项目编号	1543366
	Dynamics of the Antarctic Seasonal Ice Zone
	John Marshall
主持机构	Massachusetts Institute of Technology
项目开始年	2016
	2016-04-15
项目结束日期	2019-03-31
资助机构	US-NSF
项目类别	Standard Grant
项目经费	826678(USD)
国家	美国
语种	英语
英文摘要	The seasonal sea ice zone (SIZ) on the southern flank of the Antarctic Circumpolar Current is the region in which sea ice undergoes a massive seasonal cycle in its thickness and extent. The SIZ extends all the way around Antarctica and it is here that sea-ice manufacture and export leads to brine rejection and loss of buoyancy in the water column. In this way cold surface waters are preconditioned for subsequent convection, mixing and entrainment in coastal polynyas, under ice shelves and over the continental slope of Antarctica. The transformed (densified) waters ultimately make up Antarctic Bottom Water feeding the lower cell of the Southern Ocean (SO), connecting to the abyssal oceans. Despite the importance of the SIZ in driving the meridional circulation of the ocean-atmosphere climate system, its dynamics is not well observed, modeled or understood. This study seeks to model the fluid dynamics of the seasonal cycle of sea-ice formation in a strongly eddying region next to the continental shelf. The broad impacts of the research center upon the Antarctic being a system of such great importance to global ocean circulation, and to climate. The study intends to bring together theory, observations and models to address the contemporary problem of uptake of heat to the abyssal ocean, and will provide a challenging context for the education of graduate students and postdoctoral researchers in interdisciplinary science. The development of MITgcm, an open source ocean model used by many, will also continue.
来源学科分类	Geosciences - Polar Programs
文献类型	项目
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/69410
专题	环境与发展全球科技态势
推荐引用方式 GB/T 7714	John Marshall.Dynamics of the Antarctic Seasonal Ice Zone.2016.