权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Effects of Saharan Dust on African Easterly Waves and Tropical Cyclones

撒哈拉沙尘对非洲东风波和热带气旋的影响

基本信息

批准号：
1321720
负责人：
Shu-Hua Chen
金额：
$ 41.32万
依托单位：
University of California-Davis
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2013
资助国家：
美国
起止时间：
2013-07-01 至 2017-06-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1321720&HistoricalAwards=false
关键词：
Effects Saharan Dust African Easterly

项目摘要

The primary objective of this research project is to advance understanding of the effects of Saharan mineral dust on the African easterly Jet, African easterly waves, and tropical cyclones. A unified work plan is designed that combines theory, numerical experiments, data assimilation, and model verification. Standard analytical, numerical, and diagnostic methods will be used to execute the plan. A new theoretical framework will be developed whose goal is to illuminate causal relationships between Saharan dust, the African easterly jet, and African easterly waves. The theoretical framework will serve as a tool for interpreting results obtained from the Weather Research and Forecasting (WRF) model, which will be used to carry out comprehensive simulations involving dust-radiative-microphysical interactions. The intellectual merit of the research includes advancing understanding of how Saharan mineral dust operates over the synoptic scale environment to the tropical cyclone scale to affect the path and intensification of tropical cyclones. This research will assess the relative importance dust-radiation and dust-microphysical interactions on tropical cyclone activity, which will lead to improved prediction of TCs.The broader impacts of the research include model validation results with various data sets, which is critical to assessing model performance and forecasts. This award will develop a new understanding of the effects of dust on tropical cyclones, which can be used to help improve existing diagnostic and statistical tools for tropical cyclone forecasts. Additionally, this award will provide research training for both undergraduate and graduate students.

这一研究项目的主要目标是增进对撒哈拉矿物粉尘对非洲东风急流、非洲东风波和热带气旋影响的了解。设计了理论、数值试验、资料同化和模式检验相结合的统一工作方案。将使用标准的分析、数值和诊断方法来执行该计划。将开发一个新的理论框架，其目标是阐明撒哈拉沙漠沙尘、非洲东风急流和非洲东风波之间的因果关系。理论框架将作为解释天气研究和预报(WRF)模型所获得结果的工具，该模型将用于进行涉及尘埃-辐射-微物理相互作用的全面模拟。这项研究的学术价值包括促进对撒哈拉矿物粉尘如何在天气尺度环境中运行到热带气旋尺度影响热带气旋路径和加强的理解。这项研究将评估沙尘辐射和沙尘微物理相互作用对热带气旋活动的相对重要性，这将有助于改进热带气旋活动的预测。研究的更广泛影响包括对各种数据集的模式验证结果，这对评估模式的性能和预测至关重要。这一奖项将对沙尘对热带气旋的影响有一个新的认识，可用于帮助改进现有的热带气旋预报诊断和统计工具。此外，该奖项还将为本科生和研究生提供研究培训。