Atmos. Chem. Phys., 8, 425-430, 2008
www.atmos-chem-phys.net/8/425/2008/
doi:10.5194/acp-8-425-2008
© Author(s) 2008. This work is distributed
under the Creative Commons Attribution 3.0 License.
Impacts of the solar eclipse of 29 March 2006 on the surface ozone concentration, the solar ultraviolet radiation and the meteorological parameters at Athens, Greece
C. Tzanis1, C. Varotsos1, and L. Viras2
1University of Athens, Department of Applied Physics, Panepistimiopolis Build. Phys. 5, 15784, Athens, Greece
2Ministry of Environment, Directorate of Air and Noise Pollution Control, 147, Patision Str., 11251 Athens, Greece

Abstract. In this study the variations in the surface ozone concentration, the solar ultraviolet radiation and the meteorological parameters at the ground before, during and after the total solar eclipse of 29 March 2006 have been examined. This analysis is based on the measurements performed at four stations located in the greater Athens basin in Greece. The experimental data demonstrated that the solar eclipse phenomenon affects the surface ozone concentration as well as the temperature, the relative humidity and the wind speed near the ground. The decrease in the surface ozone concentration that observed after the beginning of the eclipse event lasted almost two hours, probably due to the decreased efficiency of the photochemical ozone formation. The reduction of the solar ultraviolet radiation at 312 and 365 nm reached 97% and 93% respectively, while the air temperature dropped, the relative humidity increased and the wind speed decreased.

Citation: Tzanis, C., Varotsos, C., and Viras, L.: Impacts of the solar eclipse of 29 March 2006 on the surface ozone concentration, the solar ultraviolet radiation and the meteorological parameters at Athens, Greece, Atmos. Chem. Phys., 8, 425-430, doi:10.5194/acp-8-425-2008, 2008.
 
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