Analysis and Prediction of Tropical Waves and Their Interactions

热带波及其相互作用的分析和预测

• 批准号: 0233881
• 负责人: William Frank
• 金额: $ 43.45万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-03-01 至 2007-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0233881&HistoricalAwards=false
• 关键词: Analysis; Prediction; Tropical; Waves; Their

The project will investigate the structure, behavior, and interactions of the waves in the tropical atmosphere, and their impact on convection and rainfall. An improved understanding of wave excitation and governing mechanisms can produce more accurate predictions of hydroclimate variability. Dr. Frank (Penn State) will undertake a detailed analysis of tropical waves present in satellite data and global reanalysis fields. He will focus on wave interactions with orography and the seasonally and zonally varying climatological basic state, in an effort to understand the generation of rainfall variability. Dr. Frank will perform a comprehensive analysis of the satellite-derived, 10-year long precipitable water and outgoing longwave radiation data sets, which provide unique fingerprints of planetary-scale waves in the tropics. Predictability of wave activity on the 5-50 day timescale will also be investigated, using statistical techniques. The diagnostic research will advance understanding of the structure and mechanisms of tropical wave activity, and lead to improvements in hydroclimate predictions.

该项目将研究热带大气中波的结构、行为和相互作用，以及它们对对流和降雨的影响。更好地理解波浪激发和调节机制可以更准确地预测水文气候的可变性。Frank博士(宾夕法尼亚州立大学)将对卫星数据和全球再分析领域中出现的热带波进行详细分析。他将重点研究波浪与地形的相互作用以及季节性和纬向变化的气候基本状态，以努力了解降雨变异性的产生。弗兰克博士将对卫星获取的长达10年的可降水量和传出的长波辐射数据集进行全面分析，这些数据集提供了热带地区行星级波动的独特指纹。还将使用统计技术研究5-50天时间尺度上波动活动的可预测性。诊断性研究将促进对热带波活动结构和机制的了解，并有助于改进水气候预测。