The Direct Effect of Medium Energy Electron Precipitation on Mesospheric Dynamics During a Sudden Stratospheric Warming Event in 2010

Medium energy electron (MEE) (30-1000 keV) precipitation enhances the production of nitric (NOx) and hydrogen oxides (HOx) throughout mesosphere, which can destroy ozone (O3) in catalytic reactions. The dynamical effect direct mesospheric O3 reduction has long been an outstanding question, partly due to concurrent feedback from stratospheric reduction. To overcome this challenge, Whole Atmosphere Community Climate Model (WACCM) version 6 is applied specified dynamics mode for year 2010, with without MEE ionization rates. results demonstrate that rates modulate temperature, zonal wind residual circulation affecting NOx transport. required fluxes impose changes depend on preconditions. During Northern Hemispheric winter, even weak signal a sudden warming event.The result provides first step paradigm shift understanding effect.