SAFARI-2000: Fine Particulate Organic Material in Southern Africa

要准确估计细颗粒物对全球辐射平衡的影响，就必须了解细颗粒物的化学组成与大小的关系。本研究的目的是确定半挥发性物质和其他物种的贡献，在南部非洲地区的生物源排放，生物质燃烧和人为来源的细颗粒物的组合物在SAFARI 2000年计划，并阐明任何变化，这种细颗粒物的组合物，因为它是运出大西洋。气溶胶样本将收集在华盛顿大学的康维尔-580飞机在SAFARI 2000年的飞行与霍布斯博士（美国）合作。华盛顿）和诺瓦科夫博士（劳伦斯伯克利国家实验室）。将使用适合于空中部署的扩散管取样器，并对收集的物质进行质量、硫酸盐、硝酸盐和含碳物质分析。

The accurate estimation of the effects of fine particles on global radiative balance is dependent on an understanding of the chemical composition of fine particles as a function of size. The objective of this study is to determine the contribution of semi-volatile material and other species to the composition of fine particles from biogenic emissions, biomass burning, and anthropogenic sources in the Southern Africa region during the SAFARI 2000 program, and the elucidation of any changes in the composition of this fine particulate material as it is transported out over the Atlantic Ocean. Aerosol samples will be collected on the University of Washington Convair-580 aircraft during the SAFARI 2000 flights in collaboration with Dr. Hobbs (U. Washington) and Dr. Novakov (Lawrence Berkeley National Laboratory). A diffusion denuder sampler suitable for airborne deployment will be used and the collected material analyzed for mass, sulfate, nitrate, and carbonaceous material.