Search Results

You are looking at 1 - 2 of 2 items for

  • Author or Editor: C. Varotsos x
  • Refine by Access: All Content x
Clear All Modify Search
C. Varotsos
,
P. Kalabokas
, and
G. Chronopoulos

Abstract

In this study the examination of the role of the atmospheric circulation in the lower stratosphere in relation to the laminated structure of ozone in the subtropical atmosphere is attempted. This analysis is based on the vertical ozone profile data collected by balloon-borne sondes released at Athens, Greece (38°N, 24°E). From the 29 ozone soundings performed during the winter 1991/92 in the framework of both the European Arctic Stratospheric Ozone Experiment (EASOE) and the Tropospheric Ozone Research (TOR), it is shown that the lamination phenomenon in ozone profiles, especially in the lower stratosphere, was very frequently present. Furthermore, a characteristic minimum of ozone partial pressure at the height region of 14–17 km has also been detected. The occurrence of the laminated ozone structure as well as the appearance of the characteristic ozone minimum, correlated with the general circulation, leads to the following results: (a) The laminated ozone profiles are associated with the north-northwest circulation in the lower stratosphere; and (b) the characteristic ozone minimum is related to the influence of the subtropical jet stream circulation.

Full access
C. Varotsos
,
N. Dris
, and
D. Asimakopoulos

Abstract

Two recent reference atmosphere models for ozone and temperature, which are deduced from satellite data, are employed to detect the existence and the behavior of a terannual wave both in ozone and temperature.

Through the photochemical and the radiative processes, physical considerations are given in an attempt to explain the cause of the formation of the terannual wave.

Full access