Other
Scientific paper
May 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989georl..16..465k&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 16, May 1989, p. 465-468.
Other
11
Atmospheric Temperature, Climate Change, Greenhouse Effect, Northern Hemisphere, Carbon Dioxide, Radiosondes, Stratosphere, Trend Analysis, Troposphere
Scientific paper
Radiosonde temperature data from 147 stations in the Northern Hemisphere for the period 1964-85 have been used to investigate recent temperature trends in the troposphere and lower stratosphere. Experiments with atmospheric general circulation models indicate that increased concentrations of greenhouse gases in the atmosphere will lead to reduced temperatures in the stratosphere as well as increased temperatures in the troposhere. An index designed to identify this signal has been computed from the station data. This index has positive trend at most of the stations, consistent with the greenhouse effect. Over the hemisphere, the signal is statistically significant. However, opposing temperature variations in the troposphere and stratosphere are associated witn many other forcing mechanisms and the results cannot be used to identify a specific mechanism.
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