Feedbacks Between Mineral Aerosols and Sahel Drought

矿质气溶胶与萨赫勒干旱之间的反馈

• 批准号: 9422631
• 负责人: Ron Miller
• 金额: $ 17.17万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-05-01 至 1997-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9422631&HistoricalAwards=false
• 关键词: Feedbacks; Between; Mineral; Aerosols; Sahel

Abstract ATM-9422631 Miller, Ronald Tegen, Ina Columbia University Title: Feedbacks Between Mineral Aerosols and Sahel Drought This two year project is to study how mineral aerosols originating as Saharan and Sahelian dust influence West African climate, when the feedback s between dust and the climate are taken in to account. Earlier studies without such feedbacks have shown significant influence of dust in suppressing Monsoon circulation and rainfall over Sahel. The project looks at the problem with feedbacks. Dust deflation and radiative heating parameterizations developed by one of the PIs, will be incorporated in to a GCM so that mineral aerosols can become fully interactive. Experiments will be performed to demonstrate the significance of the mineral aerosol dust effect in such an interactive situation which is more realistic. The proposed research is important to find out the effect of dust on the climate of Sahel and to understand the implications of different types of land use and agriculture. Sankar-Rao Mopidevi Date:

摘要ATM-9422631米勒，罗纳德泰根，伊纳哥伦比亚大学标题：矿物气溶胶和萨赫勒干旱之间的反馈 这个为期两年的项目是研究如何矿物气溶胶起源于撒哈拉和萨赫勒地区的灰尘影响西非的气候，当灰尘和气候之间的反馈被考虑在内。 没有这种反馈的早期研究表明，沙尘在抑制萨赫勒地区的季风环流和降雨方面具有重大影响。 该项目通过反馈来看待问题。 尘埃通缩和辐射加热参数化的PI之一，将被纳入到一个GCM，使矿物气溶胶可以成为充分的互动。 将进行实验，以证明在这样的相互作用的情况下，这是更现实的矿物气溶胶尘埃效应的意义。 拟议的研究对于查明沙尘对萨赫勒气候的影响以及了解不同类型的土地利用和农业的影响非常重要。 Sankar-Rao Mopidevi日期：