Pathways and timescales for troposphere-to-stratosphere transport via the tropical tropopause layer and their relevance for very short lived substances
作者： J. G. Levine , P. Braesicke , N. R. P. Harris , N. H. Savage , J. A. Pyle
DOI: 10.1029/2005JD006940
关键词: Climatology 、 Boundary layer 、 Extratropical cyclone 、 Ozone layer 、 Stratosphere 、 Tropopause 、 Troposphere 、 Convection 、 Atmospheric sciences 、 Planetary boundary layer 、 Earth-Surface Processes 、 Ecology (disciplines) 、 Earth and Planetary Sciences (miscellaneous) 、 Space and Planetary Science 、 Palaeontology 、 Forestry 、 Aquatic science 、 Atmospheric Science 、 Soil science 、 Geochemistry and Petrology 、 Geophysics 、 Oceanography 、 Water Science and Technology
摘要: [1] We have carried out studies of the transport between tropical boundary layer, tropopause and stratosphere during January 2001 using both atmospheric tracers in a model air parcel trajectories. Most (approximately two thirds) from planetary layer (BL) into (TTL) occurs vertically above Indian Ocean Indonesian west Pacific regions, consistent with dominated by convection. Transport base TTL dynamical is 95%) extratropical lowermost (ELS) much smaller fraction entering stratospheric “overworld.” Overall, BL to ELS sufficiently rapid that this represents an important route which very short lived substances (VSLS), emitted at surface, can influence lower ozone. The approaches, high-resolution trajectories lower-resolution model, yield generally similar results, increasing confidence chemistry models capture well for chemical assessment modeling role VSLS.
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