A concept study: The sensitivity of stratospheric Bry to uncertainties in short lived substance emissions and atmospheric transport


Contact
Robyn.Schofield [ at ] awi.de

Abstract

The transport processes across the tropical tropopause layer (TTL) combines slow advection with both microphysical and convective processes. The bromine budget of the stratosphere can not be reconciled with ground-based, balloon or satellite bromine monoxide (BrO) measurements using long-lived bromine containing substances alone. Much recent modeling work has invested the contribution of the very short-lived bromine substances bromoform (CHBr3) and combined with dibromomethane (CH2Br2) upon the stratospheric Bry budget. In this talk we examine these very short lived (VSL) as well as long-lived bromine species including their interaction of the water vapor transport processes through the TTL. Lagrangian back trajectories are initiated in the stratosphere and convection is parameterized using the ERA-Interim detrainment rates. We present the transport of the VSL bromine in a conceptualized form and investigate sensitivities to the general chemical, microphysical and convective processes that result in VSL bromine contributing to the total stratospheric bromine budget.



Item Type
Conference (Invited talk)
Authors
Divisions
Programs
Peer revision
Not peer-reviewed
Publication Status
Published
Event Details
Ocean Circulation and Climate Dynamics Seminar, IFM-Geomar, Kielth October..
Eprint ID
23394
Cite as
Schofield, R. , Fueglistaler, S. , Wohltmann, I. and Rex, M. (2010): A concept study: The sensitivity of stratospheric Bry to uncertainties in short lived substance emissions and atmospheric transport , Ocean Circulation and Climate Dynamics Seminar, IFM-Geomar, Kielth October. .


Share

Research Platforms
N/A

Campaigns


Actions
Edit Item Edit Item