A Network Approach to Study Atmospheric Teleconnections

研究大气遥相关的网络方法

• 批准号: 0438612
• 负责人: Anastasios Tsonis
• 金额: $ 32.71万
• 依托单位: University of Wisconsin-Milwaukee
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-05-01 至 2008-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0438612&HistoricalAwards=false
• 关键词: Network; Approach; Study; Atmospheric; Teleconnections

A teleconnection, in atmospheric sciences, is a strong correlation of temporal fluctuations between two meteorological parameters. In this study fluctuation at each observational point is considered to be the result of the dynamics of an atmospheric system that behaves in a complex manner. The main goal of this research is to study the collective behavior of the complete observational network. This work will extensively focus on the PIs earlier preliminary works to study in detail (1) the spatial and temporal variability of teleconnections during the last century in many atmospheric parameters, (2) the relation between teleconnections in different parameters, and (3) the relation between teleconnections and various indices such as the Southern Oscillation Index. This analysis will then be extended to modeled outputs to investigate the mode(s) of communication between tropics and midlatitudes. Finally, this analysis will be used to improve the predictive capability by identifying which regions on the planet are more likely to be affected by an anomaly pattern somewhere else.Broader Impacts: The new insights from this study may help to improve climate predictions.

在大气科学中，遥相关是两个气象参数之间时间波动的强相关性。在这项研究中，每个观测点的波动被认为是大气系统以复杂方式运行的动力学结果。这项研究的主要目标是研究完整观测网络的集体行为。这项工作将广泛关注 PI 早期的初步工作，详细研究 (1) 上个世纪许多大气参数中遥相关的空间和时间变化，(2) 不同参数中遥相关之间的关系，以及 (3)遥相关性与各种指数（例如南方涛动指数）之间的关系。然后，该分析将扩展到建模输出，以研究热带地区和中纬度地区之间的通信模式。最后，该分析将用于通过确定地球上的哪些区域更有可能受到其他地方异常模式的影响来提高预测能力。更广泛的影响：这项研究的新见解可能有助于改进气候预测。