Atmospheric Chemistry and Physics

• Main Authors: Mesospheric Nox During Arctic Winter, M. Riese
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Published: 2008
• Subjects: Arctic
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.664.218; http://www.ace.uwaterloo.ca/publications/2008/acp-8-5279-2008.pdf

Abstract. Satellite observations show that the enormous solar proton events (SPEs) in October–November 2003 had significant effects on the composition of the strato-sphere and mesosphere in the polar regions. After the October–November 2003 SPEs and in early 2004, signifi-cant enhancements of NOx(=NO+NO2) in the upper strato-sphere and lower mesosphere in the Northern Hemisphere were observed by several satellite instruments. Here we present global full chemistry calculations performed with the CLaMS model to study the impact of mesospheric NOx in-trusions on Arctic polar ozone loss processes in the strato-sphere. Several model simulations are preformed with dif-ferent upper boundary conditions for NOx at 2000 K poten-tial temperature (≈50 km altitude). In our study we focus on the impact of the non-local production of NOx, which means