Feedbacks Between Mineral Aerosols and Sahel Drought

Miller, Ronald Tegen， Ina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当考虑到沙尘和气候之间的反馈时，源自撒哈拉和萨赫勒沙尘的矿物气溶胶如何影响西非气候。没有这种反馈的早期研究表明，沙尘在抑制萨赫勒地区季风环流和降雨方面具有重要影响。这个项目用反馈来看待这个问题。其中一个pi开发的粉尘收缩和辐射加热参数化将被纳入GCM，以便矿物气溶胶能够充分相互作用。在这种更真实的相互作用情况下，将进行实验来证明矿物气溶胶粉尘效应的意义。拟议的研究对于找出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：

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: