Particle Formation in the Upper Tropical Troposphere: A Source of Nuclei for the Stratospheric Aerosol
作者： C. A. Brock , P. Hamill , J. C. Wilson , H. H. Jonsson , K. R. Chan
DOI: 10.1126/SCIENCE.270.5242.1650
关键词:
摘要: Atmospheric measurements and numerical calculations described here indicate that binary homogeneous nucleation of H2SO4-H2O particles occurs in the upper tropical troposphere. Particle concentrations decrease with increasing altitude above tropopause as a result coagulation during upward air transport produced by stratospheric circulations. During extended periods time volcanic eruptions do not strongly influence particle number concentrations, formed troposphere provide nuclei upon which oxidized sulfur gases condense stratosphere. This source, coupled aerosol microphysical properties atmospheric transport, governs concentration lower mid-latitude
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