Influence of strong sudden stratospheric warmings on ozone in the middle stratosphere according to millimeter wave observations
| Autor: | A. N. Ignat’ev, A. N. Lukin, S. B. Rozanov, E. P. Kropotkina, S. V. Solomonov |
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| Rok vydání: | 2017 |
| Předmět: |
Geopotential
Ozone 010504 meteorology & atmospheric sciences Sudden stratospheric warming Atmospheric sciences 01 natural sciences chemistry.chemical_compound Wavelength Geophysics Amplitude chemistry Space and Planetary Science Polar vortex 0103 physical sciences Polar Environmental science 010303 astronomy & astrophysics Stratosphere 0105 earth and related environmental sciences |
| Zdroj: | Geomagnetism and Aeronomy. 57:361-368 |
| ISSN: | 1555-645X 0016-7932 |
| Popis: | This paper reports the study data on variations in the ozone content in the middle stratosphere over Moscow based on millimeter wavelength observations during a range of midwinter sudden stratospheric warmings that occurred in the past two decades. The relation of ozone with planetary waves and the intensity of the polar stratospheric vortex has been established. The ozone vertical distribution has been monitored with a highly sensitive spectrometer with a two-millimeter wave band. The discovered phenomena of a relatively long-term lower ozone content in December in the considered cold half-year periods are related to the higher amplitude of the planetary wave with n = 1. Such phenomena preceded the development of strong midwinter stratospheric warmings, which, in turn, were accompanied by a significant increase in the ozone content in January. This ozone enrichment was related to the lower amplitude of the wave with n = 1 and higher amplitude of the wave with n = 2 and was accompanied by geopotential H c.v. growth in the polar vortex center. Specific features of variations in the ozone content under the influence of the major atmospheric processes are observed not only in certain cold half-year periods but are also well seen in the general averaged pattern for winters with strong stratospheric warmings. |
| Databáze: | OpenAIRE |
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