Collaborative Research: The Interaction of Anticyclonic Eddies with Deep Convection

合作研究：反气旋涡流与深层对流的相互作用

基本信息

批准号：
0526297
负责人：
Jonathan Lilly
金额：
$ 23.62万
依托单位：
Earth and Space Research
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2005
资助国家：
美国
起止时间：
2005-09-01 至 2009-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0526297&HistoricalAwards=false
关键词：
Collaborative Research Interaction Anticyclonic Eddies

项目摘要

An increasing amount of observational evidence now points to intense, oftenlong-lived, aticyclonic eddies as one of the outstanding dynamical features in thedeeply convecting regions of the world ocean. Yet modeling studies, informed by themore limited observations available in the past, have tended to focus on precisely theopposite case, cyclonic eddies that rapidly disintegrate when subjected to strongsurface cooling. Anticyclonic eddies could interactwith deep convection in a variety of ways, but their net effect on convectivewater mass transformation is far from obvious. Their influence must therefore beconsidered an important unresolved element of the global thermohaline circulation, andby extension, a research problem of substantial societal concern.It is proposed to investigate the interaction between anticyclonic eddies andconvection using a combined modeling and data analysis approach. The detailedbehavior of anticyclonic eddies subject to strong surface buoyancy loss will beexamined throughout a broad range of parameter space. With the aid of newlydeveloped mathematical and statistical techniques, we will systematically identify anddescribe coherent eddies in several key convection areas using a variety of high-qualitydatasets. The net result should be a significant step towards a more completeunderstanding of deep convection in a realistic setting. This process-oriented work willmake possible improved parameterizations of convection in large-scale models,and thus more accurate predictions of climate variability.

现在，越来越多的观察证据表明，这是强烈的，经常寿命的，冰淇淋的涡流，这是世界海洋中令人信服的地区的出色动力特征之一。然而，由themore有限观察结果告知的建模研究倾向于精确地关注posposite的情况，当经受强度呈强度冷却时，它们会迅速分解。反气旋涡流可以通过多种方式与对流相互作用，但是它们对对流水质量转化的净影响远非显而易见。因此，它们的影响必须构成全球热盐循环的重要未解决的元素，在扩展中，提出了一个实质性社会关注的研究问题。它提出了使用合并的建模和数据分析方法研究反流行涡流与转化之间的相互作用。在广泛的参数空间中，会遭受强大的表面浮力损失的详细行为。在新开发的数学和统计技术的帮助下，我们将使用各种高质量datasets系统地在几个关键的对流区域中识别并描述相干的涡流。最终结果应该是在现实环境中更加完全理解深度对流的重要一步。这项面向过程的工作将在大规模模型中改善对流的参数化，从而更准确地预测气候变异性。