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URN: urn:nbn:de:swb:90-586803

A multi-model intercomparison of halogenated very short-lived substances (TransCom-VSLS): Linking oceanic emissions and tropospheric transport for a reconciled estimate of the stratospheric source gas injection of bromine

Hossaini, R.; Patra, P.K.; Leeson, A.A.; Krysztofiak, G.; Abraham, N.L.; Andrews, S.J.; Archibald, A.T.; Aschmann, J.; Atlas, E.L.; Belikov, D.A.; Bönisch, H.; Carpenter, L.J.; Dhomse, S.; Dorf, M.; Engel, A.; Feng, W.; Fuhlbrügge, S.; Griffiths, P.T.; Harris, N.R.P.; Hommel, R.; ... mehr

Abstract:
The first concerted multi-model intercomparison of halogenated very short-lived substances (VSLS) has been performed, within the framework of the ongoing Atmospheric Tracer Transport Model Intercomparison Project (TransCom). Eleven global models or model variants participated (nine chemical transport models and two chemistry– climate models) by simulating the major natural bromine VSLS, bromoform (CHBr$_{3}$) and dibromomethane (CH$_{2}$Br$_{2}$), over a 20-year period (1993–2012). Except for three model simulations, all others were driven offline by (or nudged to) reanalysed meteorology. The overarching goal of TransCom- VSLS was to provide a reconciled model estimate of the stratospheric source gas injection (SGI) of bromine from these gases, to constrain the current measurement-derived range, and to investigate inter-model differences due to emissions and transport processes. Models ran with standardised idealised chemistry, to isolate differences due to transport, and we investigated the sensitivity of results to a range of VSLS emission inventories. Models were tested in their ability to reproduce the observed seasonal and spat ... mehr


Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Atmosphärische Spurenstoffe und Fernerkundung (IMK-ASF)
Publikationstyp Zeitschriftenaufsatz
Jahr 2016
Sprache Englisch
Identifikator ISSN: 1680-7316, 1680-7324
KITopen ID: 1000058680
HGF-Programm 12.04.03; LK 01
Erschienen in Atmospheric chemistry and physics
Band 16
Heft 14
Seiten 9163-9187
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