Transport and Transformations of NOy and Other Species in Pyro-Convection
Abstract
The outflow of deep convection with entrained biomass burning smoke was sampled by the DC-8 aircraft on Jul 4, 2008. The richly-Instrumented aircraft provided an excellent opportunity to understand chemical processing of Biomass Burning plume smoke entrained in a deeply-convecting cumulus cloud. The existence of entrained smoke in the outflow of the cumulonimbus in study was clear by the strong, styptic smell of smoke at altitude. It is not possible to determine if this towering cumulonimbus (TCb) was indeed the trigger for deep convection (which would make it, by-definition, a Pyro-Cumulonimbus cloud) but this is irrelevant. It is only important to take stock of the entrained fresh smoke inflow into the base of the convection and subsequent in-cloud processing of chemical and aerosol species. Entrainment of smoke from a fire some distance away from the location of the core may only result in additional low-altitude photochemical processing prior to cloud processing.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2009
- Bibcode:
- 2009AGUFM.A43A0235K
- Keywords:
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- 0305 ATMOSPHERIC COMPOSITION AND STRUCTURE / Aerosols and particles;
- 0322 ATMOSPHERIC COMPOSITION AND STRUCTURE / Constituent sources and sinks;
- 0341 ATMOSPHERIC COMPOSITION AND STRUCTURE / Middle atmosphere: constituent transport and chemistry;
- 0345 ATMOSPHERIC COMPOSITION AND STRUCTURE / Pollution: urban and regional