HR: 15:20h
AN: A53E-11    [Abstracts]
TI: Planetary Waves, Ozone Distribution And Tropopause Height Asymmetries In Connection To Antarctic Peninsula Warming
AU: * Milinevsky, G
EM: gennadim@gmail.com
AF: National Taras Shevchenko University of Kyiv, 2, Acad Glushkova Av., Build.1, Physics Faculty, Space Physics Dept., Kyiv, 03680, Ukraine
AU: Evtushevsky, O
EM: evtush@univ.kiev.ua
AF: National Taras Shevchenko University of Kyiv, 2, Acad Glushkova Av., Build.1, Physics Faculty, Space Physics Dept., Kyiv, 03680, Ukraine
AU: Grytsai, A
EM: assen@univ.kiev.ua
AF: National Taras Shevchenko University of Kyiv, 2, Acad Glushkova Av., Build.1, Physics Faculty, Space Physics Dept., Kyiv, 03680, Ukraine
AU: Agapitov, O
EM: agapit@univ.kiev.ua
AF: National Taras Shevchenko University of Kyiv, 2, Acad Glushkova Av., Build.1, Physics Faculty, Space Physics Dept., Kyiv, 03680, Ukraine
AU: Klekociuk, A
EM: andrew.klekociuk@aad.gov.au
AF: Australian Antarctic Division, Channel Highway, Kingston Tasmania, Kingston, 7050, Australia
AU: Lozitsky, V
EM: hovgaard@ukr.net
AF: National Taras Shevchenko University of Kyiv, 2, Acad Glushkova Av., Build.1, Physics Faculty, Space Physics Dept., Kyiv, 03680, Ukraine
AU: Kravchenko, V
EM: vok@univ.kiev.ua
AF: National Taras Shevchenko University of Kyiv, 2, Acad Glushkova Av., Build.1, Physics Faculty, Space Physics Dept., Kyiv, 03680, Ukraine
AB: Decadal variations of the quasi-stationary wave amplitude and zonal structure are analyzed using the TOMS data. Seasonal dependence of total ozone content (TOC) is considered. The amplitudes of quasi-stationary planetary waves in TOC zonal distribution at high latitudes of Southern Hemisphere are calculated for 1979-2005. The highest values of the quasi-stationary wave amplitude at latitude 65S in October are observed. The asymmetry of total ozone distribution over Antarctic region during Austral spring is discussed. The amplitude and longitudinal position of zonal anomalies are calculated for total ozone content distribution along seven individual latitude bands at 5-degree intervals between 50S and 80S. The mid-latitude ozone-rich collar has a mid-latitude maximum with mean position between 90E-180E longitudes and with up to 390 DU. The significant planetary wave TOC minimum eastward shift about 40 degrees in longitude is observed over Weddell Sea during 1979-2005, whereas the zonal maximum is relatively stable in position. This displacement is discussed in connections to latest findings of the strengthening circumpolar westerlies and regional climate warming in Antarctic Peninsula. Tropopause height anomalies over Antarctic region show seasonal change associated with total ozone losses during spring months. The tropopause height anomaly in West Antarctica coupled with its increasing decadal trend could be involved in climate change in this region. The research was made in the framework of the SCAR ICESTAR Program, and ORACLE-O3 IPY Project, and partly supported by project 06BF051-12, Grant Greece-Ukraine M/86-2006, and Australian Antarctic Science project 737.
DE: 1637 Regional climate change
DE: 3305 Climate change and variability (1616, 1635, 3309, 4215, 4513)
DE: 3362 Stratosphere/troposphere interactions
DE: 3389 Tides and planetary waves
DE: 4554 Planetary waves
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting