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On the longitude dependence of total ozone trends over middle-latitudes

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It has recently been observed that the total ozone trends derived from certain geographical regions such as the Mediterranean and Athens (Greece) show similar values to those derived from the 40°N zonal averaged column ozone data. In this Letter, the total ozone concentration, collected by the Total Ozone Mapping Spectrometer (TOMS) flown on Nimbus-7 and Meteor-3 during the time-period January 1979-December 1993, as well as by Earth Probe during the time-period January 1997-May 2001, for the Mediterranean, Athens (Greece) and Srinagar (India), is analysed. Further, the harmonic analysis performed on total ozone time-series provides a proper tool to interpret the observed similarity in total ozone seasonal trends, which may probably be attributed to the effect of planetary waves on the ozone distribution.

Document Type: Research Article


Affiliations: 1: Department of Atmospheric Sciences, University of Athens, Panepistimioupolis, PHYS-V, 157 84 Athens, Greece 2: Department of Civil Engineering, Indian Institute of Technology, Kanpur -- 208 016, India 3: Department of Electronic Engineering and Physics, University of Dundee, Dundee DD1 4HN, Scotland, UK

Publication date: March 1, 2003

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