Collaborative Research: Large-Scale Atmospheric Response to the North Pacific Western Boundary Current Fluctuations and its Potential Predictability

合作研究：大规模大气对北太平洋西边界洋流波动的响应及其潜在的可预测性

• 批准号: 1035423
• 负责人: Young-Oh Kwon
• 金额: $ 42.68万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1035423&HistoricalAwards=false
• 关键词: Collaborative; Research; Large; Scale; Atmospheric

This project seeks to understand the impact of fluctuations of the western boundary currents in the North Pacific on the midlatitude atmospheric circulation and the weather patterns embedded in it. Specifically, the project uses high-resolution datasets and atmospheric model simulations to understand how shifts in the oceanic fronts (regions of strong sea surface temperature contrast) along the eastern extensions of the Kuroshio and Oyashio currents affect the overlying atmosphere. The potential influence of such sea surface temperature variations on atmospheric circulation has been an active research topic for many years, with inconclusive results. However, recent observations suggest that strong sea surface temperature contrasts over short spatial scales can affect local surface winds, and model simulations suggest that higher model resolution is a key ingredient in properly simulating such effects. Thus, research conducted here will attempt to resolve the issue of the atmospheric impact of current-driven fluctuations of North Pacific oceanic fronts using new high-resolution datasets and model simulations.Since ocean currents vary more slowly than midlatitude weather patterns, a strong impact of ocean current fluctuations on the overlying atmosphere could imply that some portion of atmospheric variability is accessible to long-range prediction. Such a finding would be beneficial for long-range weather prediction, particularly in the Western United States. In addition, the work will support and mentor a postdoctoral researcher, thus supporting the early career of an atmospheric scientist.

该项目旨在了解北太平洋西部边界电流波动对中纬度大气循环的影响以及嵌入其中的天气模式。 具体而言，该项目使用高分辨率数据集和大气模型模拟，以了解海洋阵线的变化（强海面温度对比度的区域）如何沿着黑杂的和oyashio电流的东部扩展影响过度的大气。 这种海面温度变化对大气循环的潜在影响已经成为一个活跃的研究主题，但结果尚无定论。但是，最近的观察结果表明，在短空间尺度上，强烈的海面温度对比会影响局部表面风，模型模拟表明，更高的模型分辨率是正确模拟此类效应的关键成分。 因此，此处进行的研究将尝试解决北太平洋阵线的大气驱动影响的问题，使用新的高分辨率数据集和模型模拟。由于海洋电流的速度较慢，而洋流的速度较慢，而偏低的天气模式的变化较慢，在大气上，海洋电流的强烈影响可能会访问大气的一部分，这意味着可以访问大气的范围。 这样的发现将对远程天气预测有益，尤其是在美国西部。 此外，这项工作将支持和指导博士后研究人员，从而支持大气科学家的早期职业。