Variations and Trends in Tropospheric and Stratospheric Global Temperatures, 1958–87

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Abstract
Examined in this paper are the variations and trends in tropospheric and low-stratospheric temperature for seven climatic zones, hemispheres, and world for intervals 1958–87 and 1973–87, based on 63 well-distributed radiosonde stations. For the 30-yr interval 1958–87, these data indicate an increase in year-average global temperature at the surface and in the tropospheric 850–300 mb layer of 0.08°C (10 yr)−1 and 0.09°C (10 yr)−1, respectively, just significant at the 5% level. Nevertheless during this interval there is evidence for a slight decrease in year-average temperature at the surface and in the troposphere of the north polar and north temperate zones. The global 300–100 mb temperature is indicated as having decreased by 0.18°C (10 yr)−1 during this 30-yr interval (significant at the 1% level), with a temperature decrease in all seven climatic zones, though largest in the south polar zone (associated with the Antarctic “ozone hole” phenomenon). For the 15-yr interval 1973–87, the global te... Abstract Examined in this paper are the variations and trends in tropospheric and low-stratospheric temperature for seven climatic zones, hemispheres, and world for intervals 1958–87 and 1973–87, based on 63 well-distributed radiosonde stations. For the 30-yr interval 1958–87, these data indicate an increase in year-average global temperature at the surface and in the tropospheric 850–300 mb layer of 0.08°C (10 yr)−1 and 0.09°C (10 yr)−1, respectively, just significant at the 5% level. Nevertheless during this interval there is evidence for a slight decrease in year-average temperature at the surface and in the troposphere of the north polar and north temperate zones. The global 300–100 mb temperature is indicated as having decreased by 0.18°C (10 yr)−1 during this 30-yr interval (significant at the 1% level), with a temperature decrease in all seven climatic zones, though largest in the south polar zone (associated with the Antarctic “ozone hole” phenomenon). For the 15-yr interval 1973–87, the global te...

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