Evaluation of the Impact of Ionization Caused by the Strongest GLE Events of Solar Cycle 23 on the Atmosphere and Climate of Egypt.

Paper ID : 1168-ICRSSSA

Authors

Mohammed Abu Bakr * اخصائي

Abstract

Solar variability affects the atmosphere and climate through interactions of radiation with atmospheric components. This study used phenomenology to explore the effects of strong solar energetic particles (SEP), which correspond to atmospheric cosmic ray ground level enhancements (GLEs) responses. In this study, the aerosol optical depth over Egypt is compared to that over various regions of the world, including Russia, Australia, and the South Pole, during the powerful solar energetic particle events GLE 59, 65, 69, and 70.The PLANETOCOSMICS model was used to simulate the rate at which ions were produced as a result of these occurrences Remote sensing satellite data was also used to measure the aerosol optical depth and Angstrom exponent for the occurrence dates of June 2000, October 2003, January 2005, and December 2006. (SeaWIFS). The aerosol fluctuations were measured before, during, and after the solar energetic particle events in order to observe the changes in aerosol loading that occur two days after the occurrences. In GLE69, the South Pole saw an increase in the AOD of 0.04 to 0.05, Russia saw an increase of 0.35 to 0.48, and Australia and Egypt saw increases of 0.03 to 0.06 and 0.17 to 0.21, respectively. The AE passed over the South Pole, Russia, Australia, and Egypt in the range of 0.73 to 1.73, 1.03 to 1.4, 0.93 to 0.99, and -0.02 to 0.7. The AOD rose in GLE70. This suggests that the solar energetic particle events may noticeably modify the radiative and physicochemical properties of the atmospheric particles.

Keywords

Keywords— solar energetic particle event, cosmic ray, aerosol optical depth, Egypt

Status: Accepted (Poster Presentation)