Influences of deep convective cloud systems on tropospheric trace gases and photochemistry over the tropical West Pacific [Elektronische Ressource] : a modeling case study / Marc Salzmann

In uences of deep convective cloud systems on tropospherictrace gases and photochemistry over the tropical West Paci c:A modeling case studyDissertationzur Erlangung des Grades“Doktor der Naturwissenschaften”am Fachbereich Physikder Johannes Gutenberg-Universit atin MainzMarc Salzmanngeboren in Bad HersfeldMainz, 2005Tag der mundlic hen Prufung: 31. Januar 2006D77 Mainzer DissertationAbstractA numerical model for studying the in uences of deep convective cloud systemson photochemistry was developed based on a non-hydrostatic meteorological modeland chemistry from a global chemistry transport model. The transport of tracegases, thescavengingofsoluble trace gases, andthe in uences oflightning producednitrogen oxides (NO =NO+NO ) on the local ozone-related photochemistry werex 2investigated in a multi-day case study for an oceanic region located in the tropicalwestern Paci c. Model runs considering in uences of large scale ows, previouslyneglected in multi-day cloud resolving and single column model studies of tracertransport,yieldedthatthein uenceofthemesoscalesubsidence(betweenclouds)ontrace gas transport was considerably overestimated in these studies. The simulatedvertical transport and scavenging of highly soluble tracers were found to dependon the initial pro les, reconciling contrasting results from two previous studies.