Quasi-biennial oscillation in ozone and temperature over tropics |
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| Authors: | S Fadnavis G Beig |
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| Institution: | 1. Instituto de Astrofísica de Andalucía, CSIC, P.O. Box 3004, E-18080, Granada, Spain;2. Centre for Research in Earth and Space Science, York University, 4700 Keele St., Toronto, Ontario, M3J 1P3, Canada;1. Russian State Hydrometeorological University, Maloohtinsky 98, St. Petersburg 195196, Russia;2. St. Petersburg State University, ul. Ulyanovskaya 1, St. Petersburg 198504, Russia;3. Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100080, China;1. Department of Land Surveying and Geo-Informatics, The Hong Kong Polytechnic University, Hong Kong, China;2. Institute for Energy, Environment and Sustainable Communities, University of Regina, Regina, Saskatchewan, Canada;3. Department of Civil Engineering, McMaster University, Hamilton, Ontario, Canada;4. Ven Te Chow Hydrosystems Laboratory, Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA;5. Department of Geosciences, Texas Tech University, Lubbock, TX, USA |
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| Abstract: | Spatiotemporal variations of the quasi-biennial oscillation (QBO) in temperature and ozone over the tropical–subtropical belts (40°N–40°S) have been studied using Microwave Limb Sounder data for the period 1992–1999. Wavelet analysis has been performed to study inter-annual variations in amplitude and phases of the QBO. Latitude-height cross-sections of the amplitudes of temperature and ozone QBO exhibit a double-peak structure near the equator. Phase structure reveals that the temperature QBO descended faster than the ozone QBO. Cross-wavelet analysis shows an anti-phase relation between the amplitudes of the temperature and ozone QBO in the upper stratospheric region, whereas in-phase relation exists in the middle stratospheric region. |
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