On interannual fluctuation of the amount of ozone in the Northern Hemispher (introduction) (abstract)

• Main Author: Hiromichi Mori
• Format: Report
• Language: English
• Published: Japan Meteorological Agency 1993
• Subjects: Arctic; North Pole; Polar meteorology and glaciology; Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology
• Online Access: https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3788; http://id.nii.ac.jp/1291/00003788/; https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3788&item_no=1&attribute_id=18&file_no=1

Papers about ozone layer variability and related topics published in the U. S. S. R. from 1989 to 1991,are introduced. (1) Long-term variations and trends in total ozone over the Northern Hemisphere From ground-based network data the mean zonal variations in total ozone of 1974-1986 are estimated using approximation by spherical functions. Low total ozone values of 1983 and 1985 result in negative linear trends in total ozone over the Northern Hemisphere being equal to -1.4% over 10 years with standard deviation of 0.9%. Their amplitudes rise to 15-20 D. U. in January in the near polar areas but decrease to several D. U. in other seasons. (2) On interannual ozone layer variability in the Northern Hemisphere wintertime Data of land-based American and European stations in winter of 1966-1987 are analyzed and point to the presence of correlations between the total ozone and 10-12 years atmospheric cycle in the western phase of a quasi-biennial cycle. These correlations are similar to those between the 11 years solar cycle and the temperature in the North Pole lower troposphere. But for the eastern part of a quasi-biennial cycle no distinct correlations between the total ozone and 10-12 years cycle were found. (3) Investigation of total ozone content and polar stratospheric clouds during winter-spring 1989 over the Arctic At Heise Islands of the Arctic, the total ozone content and stratospheric clouds were observed during winter-spring 1989. Distinct decrease of the total ozone content was not found. Advection of ozone from low latitude to the Arctic causes when the polar vortex collapses. Polar stratospheric clouds are observed when the lower stratospheric temperature is below -80