Articles | Volume 16, issue 18
https://doi.org/10.5194/acp-16-12239-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/acp-16-12239-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
29 Sep 2016
Research article |
| 29 Sep 2016
Global impacts of tropospheric halogens (Cl, Br, I) on oxidants and composition in GEOS-Chem
Wolfson Atmospheric Chemistry Laboratories (WACL), Department of Chemistry, University of York, York, YO10 5DD, UK
Johan A. Schmidt
Department of Chemistry, University of Copenhagen, Universitetsparken, 2100 Copenhagen O, Denmark
Mat J. Evans
Wolfson Atmospheric Chemistry Laboratories (WACL), Department of Chemistry, University of York, York, YO10 5DD, UK
National Centre for Atmospheric Science (NCAS), University of York, York, YO10 5DD, UK
Lucy J. Carpenter
Wolfson Atmospheric Chemistry Laboratories (WACL), Department of Chemistry, University of York, York, YO10 5DD, UK
Katja Großmann
Institute of Environmental Physics, University of Heidelberg, Heidelberg, Germany
now at: Joint Institute For Regional Earth System Science and Engineering (JIFRESSE), University of California Los Angeles, Los Angeles, CA, 90095, USA
Sebastian D. Eastham
School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
Daniel J. Jacob
School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
Barbara Dix
Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO 80309-0215, USA
Theodore K. Koenig
Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO 80309-0215, USA
Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO 80309-021, USA
Roman Sinreich
Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO 80309-0215, USA
Ivan Ortega
Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO 80309-0215, USA
Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO 80309-021, USA
Rainer Volkamer
Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO 80309-0215, USA
Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO 80309-021, USA
Alfonso Saiz-Lopez
Department of Atmospheric Chemistry and Climate, Institute of Physical Chemistry Rocasolano, CSIC, Madrid, 28006, Spain
Cristina Prados-Roman
Department of Atmospheric Chemistry and Climate, Institute of Physical Chemistry Rocasolano, CSIC, Madrid, 28006, Spain
now at: Atmospheric Research and Instrumentation Branch, National Institute for Aerospace Technology (INTA), Madrid, Spain
Anoop S. Mahajan
Indian Institute of Tropical Meteorology, Maharashtra, 411008, India
Carlos Ordóñez
Dpto. Física de la Tierra II, Facultad de Ciencias Físicas, Universidad Complutense de Madrid, 28040 Madrid, Spain
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Short summary
We present a simulation of tropospheric Cl, Br, I chemistry within the GEOS-Chem CTM. We find a decrease in tropospheric ozone burden of 18.6 % and a 8.2 % decrease in global mean OH concentrations. Cl oxidation of some VOCs range from 15 to 27 % of the total loss. Bromine plays a small role in oxidising oVOCs. Surface ozone, ozone sondes, and methane lifetime are in general improved by the inclusion of halogens. We argue that simulated bromine and chlorine represent a lower limit.
We present a simulation of tropospheric Cl, Br, I chemistry within the GEOS-Chem CTM. We find a...
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