Physics
Scientific paper
Nov 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29v..21r&link_type=abstract
Geophysical Research Letters, Volume 29, Issue 22, pp. 21-1, CiteID 2064, DOI 10.1029/2002GL015141
Physics
8
Meteorology And Atmospheric Dynamics: Radiative Processes, Global Change: Atmosphere (0315, 0325), Global Change: Climate Dynamics (3309)
Scientific paper
The effects of changes in ozone and well-mixed greenhouse gases upon the annual-mean stratospheric temperatures are investigated using a general circulation model and compared with the observed (1979-2000) trends. In the global-mean lower stratosphere (50-100 hPa), ozone changes exert the most important influence upon the cooling trend. In the upper stratosphere, where both ozone and greenhouse gas changes influence the temperature trends, the amount of cooling is sensitive to the background ozone climatology. Taking into account the uncertainties in the observed temperature trend estimates and the dynamical variability of the model, the simulated results are in reasonable quantitative agreement with the vertical profile of the observed global-and-annual-mean stratospheric cooling, and with the observed lower stratospheric zonal-and-annual-mean cooling. This affirms the major role of these species in the temperature trend of the stratosphere over the past two decades.
Ramaswamy Venkatachalam
Schwarzkopf Daniel M.
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