Effect of solar proton events on the middle atmosphere during the past two solar cycles as computed using a two-dimensional model

Details Effect of solar proton events on the middle atmosphere during the past two solar cycles as computed using a two-dimensional model Effect of solar proton events on the middle atmosphere during the past two solar cycles as computed using a two-dimensional model

May 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....95.7417j&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 95, May 20, 1990, p. 7417-7428.

Physics

78

Atmospheric Models, Middle Atmosphere, Nitrogen Oxides, Solar Protons, Solar Terrestrial Interactions, Atmospheric Chemistry, Ozonometry, Solar Cycles, Two Dimensional Models

Scientific paper

This paper investigates the effects of solar proton events (SPEs) on the middle atmosphere during the past two solar cycles (1963-1984), by examining changes in the production of odd nitrogen, NO(y), and ozone and using a proton energy degradation scheme to derive ion pair production rates. These calculations show that NO(y) is not substantially changed over a solar cycle by SPEs; significant SPEs last only 1-5 days, tend to occur near solar maximum, and are typically months to years apart, preventing a build up of SPE-produced NO(y). Fractional ozone changes are even smaller than the fractional NO(y) changes and are significant only for the August 1972 SPE. Ozone, like NO(y), returns to its ambient levels on time scales of several months to a year.

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