A Study on the Effects of Solar Protons on the NOy by Magnetic Storm Events from 2003 to 2012: A Comparison between the Southern and Northern Hemispheres

نوع مقاله : پژوهشی

نویسندگان

1 M.Sc. Graduated, Department of Space Physics, Institute of Geophysics, University of Tehran, Tehran, Iran

2 Associate Professor, Department of Space Physics, Institute of Geophysics, University of Tehran, Tehran, Iran

چکیده

In the study of solar-terrestrial relationships, magnetic storms and solar activity play important roles. In this paper, the intense magnetic storms in company with solar proton events occurred in October and November 2003, January 2005, December 2006, January and March 2012 have been considered. The variation of the odd nitrogen (NOy) oxides and ozone in the stratospheric layer is investigated by the effects of energetic particle precipitation. Anomaly percentage of the odd nitrogen (NOy) oxides and ozone are calculated separately for the Southern and the Northern hemispheres and geographic latitude from 60 to 80 degrees. The analyzed results of the observational data showed that the intense magnetic storms, which consist of more than 500 (particles/cm2 s sr) solar energetic proton (E>10MeV), gave rise to the increase of the odd nitrogen (NOy) oxides in the stratosphere, from level 1 mb to 200 mb. Also, the results showed that in November 2003, January 2005, December 2006, January and March 2012 the odd nitrogen (NOy) oxides, which consist of over 500 (particles/cm2 s sr) increased in the Northern hemisphere but decreased a little in the Southern hemisphere . Among the events of the magnetic storms in the autumn and winter seasons, the only event on the October 2003, showed that the odd nitrogen (NOy) oxides increased in the Southern hemisphere. The results showed that the increase in the odd nitrogen (NOy) oxides caused a decrease of ozone in the altitude below the odd nitrogen (NOy) with a delay.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

A Study on the Effects of Solar Protons on the NOy by Magnetic Storm Events from 2003 to 2012: A Comparison between the Southern and Northern Hemispheres

نویسندگان [English]

  • Nasim Farzanegan 1
  • Mohammad Javad Kalaee 2
1 M.Sc. Graduated, Department of Space Physics, Institute of Geophysics, University of Tehran, Tehran, Iran
2 Associate Professor, Department of Space Physics, Institute of Geophysics, University of Tehran, Tehran, Iran
چکیده [English]

In the study of solar-terrestrial relationships, magnetic storms and solar activity play important roles. In this paper, the intense magnetic storms in company with solar proton events occurred in October and November 2003, January 2005, December 2006, January and March 2012 have been considered. The variation of the odd nitrogen (NOy) oxides and ozone in the stratospheric layer is investigated by the effects of energetic particle precipitation. Anomaly percentage of the odd nitrogen (NOy) oxides and ozone are calculated separately for the Southern and the Northern hemispheres and geographic latitude from 60 to 80 degrees. The analyzed results of the observational data showed that the intense magnetic storms, which consist of more than 500 (particles/cm2 s sr) solar energetic proton (E>10MeV), gave rise to the increase of the odd nitrogen (NOy) oxides in the stratosphere, from level 1 mb to 200 mb. Also, the results showed that in November 2003, January 2005, December 2006, January and March 2012 the odd nitrogen (NOy) oxides, which consist of over 500 (particles/cm2 s sr) increased in the Northern hemisphere but decreased a little in the Southern hemisphere . Among the events of the magnetic storms in the autumn and winter seasons, the only event on the October 2003, showed that the odd nitrogen (NOy) oxides increased in the Southern hemisphere. The results showed that the increase in the odd nitrogen (NOy) oxides caused a decrease of ozone in the altitude below the odd nitrogen (NOy) with a delay.

کلیدواژه‌ها [English]

  • Magnetic storms
  • solar proton
  • solar activity
  • odd nitrogen oxides
  • energetic particles
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