Quasi-stationary planetary waves in late winter Antarctic stratosphere temperature as a possible indicator of spring total ozone 1Space Physics Laboratory, Kyiv National Taras Shevchenko University, Kyiv, Ukraine
23 Mar 2012
2Ice, Ocean, Atmosphere and Climate Program, Australian Antarctic Division, Kingston, Tasmania, Australia
Received: 02 July 2011 – Published in Atmos. Chem. Phys. Discuss.: 26 October 2011 Abstract. Stratospheric preconditions for the annual Antarctic
ozone hole are analyzed using the amplitude of quasi-stationary planetary
waves in temperature as a predictor of total ozone column behaviour. It is
found that the quasi-stationary wave amplitude in August is highly
correlated with September–November total ozone over Antarctica with
correlation coefficient (r) as high as 0.83 indicating that quasi-stationary
wave effects in late winter have a persisting influence on the evolution of
the ozone hole during the following three months. Correlation maxima are
found in both the lower and middle stratosphere. These likely result from
the influence of wave activity on ozone depletion due to chemical processes,
and ozone accumulation due to large-scale ozone transport, respectively.
Both correlation maxima indicate that spring total ozone tends to increase
in the case of amplified activity of quasi-stationary waves in late winter.
Since the stationary wave number one dominates the planetary waves that
propagate into the Antarctic stratosphere in late austral winter, it is
largely responsible for the stationary zonal asymmetry of the ozone hole
relative to the South Pole. Processes associated with zonally asymmetric
ozone and temperature which possibly contribute to differences in the
persistence and location of the correlation maxima are discussed.
Revised: 24 February 2012 – Accepted: 12 March 2012 – Published: 23 March 2012
Citation: Kravchenko, V. O., Evtushevsky, O. M., Grytsai, A. V., Klekociuk, A. R., Milinevsky, G. P., and Grytsai, Z. I.: Quasi-stationary planetary waves in late winter Antarctic stratosphere temperature as a possible indicator of spring total ozone, Atmos. Chem. Phys., 12, 2865-2879, doi:10.5194/acp-12-2865-2012, 2012.