Abstract
Abstract. Planetary and gravity waves play an important role in the dynamics of the atmosphere. They are present in the atmospheric distribution of temperature, wind, and ozone content. These waves are detectable also in the vertical profile of ozone and they cause its undulation. One of the structures occurring in the vertical ozone profile is laminae, which are narrow layers of enhanced or depleted ozone concentrations in the vertical ozone profile. They are connected with the total amount of ozone in the atmosphere and with the activity of the planetary and gravity waves. The aim of this paper is to quantify these processes in midlatitudinal Europe. We compare the occurrence of laminae induced by planetary waves (PL) with the occurrence of these induced by gravity waves (GL). We show that the PL are 10–20 times more frequent than that of GL. There is a strong annual variation of PL, while GL exhibit only a very weak variation. With the increasing lamina size the share of GL decreases and the share of PL increases. The vertical profile of lamina occurrence is different for PL and GL smaller than 2 mPa. For laminae greater than 2 mPa this difference is smaller.
Highlights
There are various structures in the vertical profile of ozone affected by the activity of the planetary and gravity waves
The method used in this paper for searching the activity of gravity and planetary waves in the ozone profile is a modification of the methods given by Teitelbaum et al (1995)
The results at the other stations are very similar. From this table we see that approximately 47 % of all laminae are planetary waves (PL), while GL laminae formed about 10 % and the share of indistinguishable laminae is about 43 %. This means that more than 50 % of all laminae can be divided into the laminae induced by the gravity or the planetary wave activity
Summary
There are various structures in the vertical profile of ozone affected by the activity of the planetary and gravity waves. The existence of laminae was confirmed by lidar and satellite measurements (Bird et al, 1997; Orsolini et al, 1997; Kar et al, 2002). They were found in water vapour in the stratosphere (Teitelbaum et al, 2000). The dynamics of the stratosphere plays a crucial role in lamina formation This finding was confirmed by the ability of dynamical models to capture these narrow layers (Manney et al, 2000; Orsolini et al, 2001). The number of large laminae is strongly correlated with the total ozone content and it is the reason why we have been interested in laminae (Krizan and Lastovicka, 2005)
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