The Weddell Upper Ocean: Analysis, Synthesis, and Modeling of ISPOL and MaudNESS Results

威德尔上层海洋：ISPOL 和 MaudNESS 结果的分析、综合和建模

基本信息

批准号：
0739371
负责人：
Miles McPhee
金额：
$ 13.33万
依托单位：
McPhee Research Company
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2008
资助国家：
美国
起止时间：
2008-06-15 至 2011-05-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0739371&HistoricalAwards=false
关键词：
Weddell Upper Ocean Analysis Synthesis

项目摘要

In the Weddell Sea, the balance between sea ice production and the upward mixing of oceanic heat (along with other chemical constituents such as CO2 and nutrients) appears to be delicately poised. Better descriptions of these microturbulence characteristics and controls on the mixing of heat and salt in atmosphere-sea ice-ocean systems are sought to increase our understanding of how this balance is maintained, or may change in a warming climate. Extensive field data sets have been obtained from two recent research campaigns in the Weddell Sea sector of the Southern Ocean. The first of these, Ice Station Polarstern (ISPOL), organized by German researchers (AWI - Bremerhaven) investigated biological air-sea-ice interactions in a 50 day drift station in multiyear ice floes, east of the Antarctic Peninsula. The MaudNESS (Maud Rise Nonlinear Equation of State Study) project sought to better understand convective modes associated with the presence and absence of polyna in the Weddell Sea by investigating late-winter upper ocean mixing in regions of weak density stratification in the vicinity of the Maud Rise seamount. Further analysis of the physics of microstructure turbulence as determined from instrumented measurements of covariance-based heat and salt fluxes in Weddell Sea upper ocean sea ice zones are to be completed in this work.

在韦德尔海中，海冰生产与海洋热量的向上混合之间的平衡（以及其他化学成分，例如二氧化碳和营养成分）似乎是精巧的。寻求更好地描述这些微扰动特性和控制大气 - 海洋冰山系统中热和盐混合的控制，以增加我们对这种平衡保持方式的理解，或者可能在温暖的气候下改变。从南大洋韦德尔海洋部门的两项研究活动中获得了广泛的现场数据集。其中的第一个是由德国研究人员（AWI-Bremerhaven）组织的Ice Station Polarstern（ISPOL）研究了在南极半岛以东的多年冰弗莱斯的50天漂移站中，研究了生物空气 - 冰冰相互作用。莫德（Maud）（国家研究的莫德（Maud）上升非线性方程）项目试图更好地理解与韦德尔海（Weddell Sea）在韦德尔海（Polyna）存在和不存在Polyna相关的对流模式，通过研究冬季冬季上海上混合在Maud Rise seamount附近弱密度分层区域的上海洋混合。在这项工作中将完成对韦德尔海上海洋冰区基于协方差的热量和盐通量确定的微结构湍流物理学的进一步分析。