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Perturbations of the ozone layer induced by intense atmospheric vortices

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Based on the complex analysis of ozone fields in regions of tropical cyclogenesis, diagnostic and prognostic signatures of tropical cyclone (TC) evolution are revealed, manifesting themselves in the features of ozone field perturbations. We show that a typical increase in total ozone (TO) observed at the periphery of the developing tropical depression 2-4 days before its transformation into a tropical storm can be considered as a very early prognostic sign of a TC. Proposed and substantiated are the basic mechanisms determining the ozone variations observed at all the stages of TC development. A conceptual model of TC impact on the ozone layer was developed. Based on the analysis of Total Ozone Mapping Spectrometer (TOMS) data, a connection between TO field perturbation characteristics in the TC zones and the parameters controlling the TC energy was revealed. The characteristics of the ozone negative anomaly in the zone of TC action (effective size of the ozone anomaly and its extreme depth) were found to be determined by the effective dimensions of the storm and hurricane wind zones.
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Document Type: Research Article

Affiliations: Institute of Experimental Meteorology, Obninsk, Kaluga Region 249038, Russia

Publication date: May 1, 2008

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