Transport pathways of peroxyacetyl nitrate in the upper troposphere and lower stratosphere from different monsoon systems during the summer monsoon season


Fadnavis S., Semeniuk K., Schultz M. G. , Kiefer M., Mahajan A., Pozzoli L., ...More

ATMOSPHERIC CHEMISTRY AND PHYSICS, vol.15, no.20, pp.11477-11499, 2015 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 15 Issue: 20
  • Publication Date: 2015
  • Doi Number: 10.5194/acp-15-11477-2015
  • Title of Journal : ATMOSPHERIC CHEMISTRY AND PHYSICS
  • Page Numbers: pp.11477-11499

Abstract

The Asian summer monsoon involves complex transport patterns with large-scale redistribution of trace gases in the upper troposphere and lower stratosphere (UTLS). We employ the global chemistry-climate model ECHAM5-HAMMOZ in order to evaluate the transport pathways and the contributions of nitrogen oxide species peroxyacetyl nitrate (PAN), NOx and HNO3 from various monsoon regions, to the UTLS over southern Asia and vice versa. Simulated long-term seasonal mean mixing ratios are compared with trace gas retrievals from the Michelson Interferometer for Passive Atmospheric Sounding aboard ENVISAT(MIPAS-E) and aircraft campaigns during the monsoon season (June-September) in order to evaluate the model's ability to reproduce these transport patterns.