The long-term trend of Ozone in South Atlantic Magnetic Anomaly Zone

MARTA ZOSSI DE ARTIGAS; BRUNO S. ZOSSI; ANA G. ELIAS; GASTON TANNURE

Kuhlungsborn

Workshop; 9th Workshop on Long Term Changes and Trends in the Atmosphere; 2016

Leibniz-Institute of Atmospheric Physic, IAGA, SCOSTEP

The South Atlantic Magnetic Anomaly (SAMA), where the total field intensity is low, is one of the most outstanding features of the geomagnetic field, presently occupying the area between South America and South Africa. SAMA is dynamic and its strength, shape and size vary in different time scales. The SAMA center has a westward drift may be related to the westward drift of the geomagnetic axis of the Earth. The low magnetic field on SAMA zone facilitates the entrance of high energy particles from the magnetosphere which may affect ozone content through its effect on NO compounds. In order to analyze this possible effect, the monthly mean of total ozone content (TOC) and of ozone content in three different layers of the middle atmosphere of Cachoeira Paulista station (22.68°S, 315.00°E) included in the network of TOMS, is used, covering the period between 1980 to 2015.