论文部分内容阅读
海洋上空中存在的气溶胶称为海洋气溶胶,它是由陆源和海源物质混合组成的。海洋气溶胶浓度变化由每立方米几微克到几百微克,颗粒直径从0.1μm到50μm,在大气中的滞留时间从几小时到几天,从而构成了一种多来源的复杂体系。海洋气溶胶的颗粒在从陆地向海洋和从海洋向陆地的地球化学过程中起着一种大气通道的桥梁作用。在海气交换中的物质交换和能量交换中扮演着重要角色。正确判别海洋气溶胶中的物质来源,评价各个来源的贡献通量,对研究大气生物地球化学循环以及人类活动对其影响有着重要的意义。本文采用因子分析方法,对百慕大上空的78个海洋气溶胶样品进行来源判别,获得较为理想的结果。
Aerosols that exist over the oceans are called marine aerosols and consist of a mixture of terrigenous and marine materials. Marine aerosol concentrations vary from a few micrograms to hundreds of micrograms per cubic meter, particle diameters range from 0.1 to 50 μm, and residence times in the atmosphere range from hours to days, creating a complex system of multiple origins. Particles of marine aerosols act as a bridge of atmospheric passage in geochemical processes from land to sea and from the ocean to land. Plays an important role in the exchange of matter and exchange of energy in air-sea exchange. Correctly judging the source of matter in marine aerosol and evaluating the contribution flux of each source are of great significance for studying the impact of atmospheric biogeochemical cycles and human activities. In this paper, 78 ocean aerosol samples over Bermuda were identified by means of factor analysis and the results were satisfactory.