World Library  

Add to Book Shelf
Flag as Inappropriate
Email this Book

Estimates of Tropical Bromoform Emissions Using an Inversion Method : Volume 13, Issue 8 (06/08/2013)

By Ashfold, M. J.

Click here to view

Book Id: WPLBN0003996270
Format Type: PDF Article :
File Size: Pages 40
Reproduction Date: 2015

Title: Estimates of Tropical Bromoform Emissions Using an Inversion Method : Volume 13, Issue 8 (06/08/2013)  
Author: Ashfold, M. J.
Volume: Vol. 13, Issue 8
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Description: Department of Chemistry, University of Cambridge, Cambridge, UK. Bromine plays an important role in ozone chemistry in both the troposphere and stratosphere. When measured by mass, bromoform (CHBr3) is thought to be the largest organic source of bromine to the atmosphere. While seaweed and phytoplankton are known to be dominant sources, the size and the geographical distribution of CHBr3 emissions remains uncertain. Particularly little is known about emissions from the Maritime Continent, which have usually been assumed to be large, and which appear to be especially likely to reach the stratosphere. In this study we aim to use the first multi-annual set of CHBr3 measurements from this region, and an inversion method, to reduce this uncertainty. We find that local measurements of a short-lived gas like CHBr3 can only be used to constrain emissions from a relatively small, sub-regional domain. We then obtain detailed estimates of both the distribution and magnitude of CHBr3 emissions within this area. Our estimates appear to be relatively insensitive to the assumptions inherent in the inversion process. We extrapolate this information to produce estimated emissions for the entire tropics (defined as 20° S–20° N) of 225 GgCHBr3 y-1. This estimate is consistent with other recent studies, and suggests that CHBr3 emissions in the coastline-rich Maritime Continent may not be stronger than emissions in other parts of the tropics.

Estimates of tropical bromoform emissions using an inversion method

Aschmann, J., Sinnhuber, B.-M., Atlas, E. L., and Schauffler, S. M.: Modeling the transport of very short-lived substances into the tropical upper troposphere and lower stratosphere, Atmos. Chem. Phys., 9, 9237–9247, doi:10.5194/acp-9-9237-2009, 2009.; Ayers, G. P., Gillett, R. W., Cainey, J. M., and Dick, A. L.: Chloride and bromide loss from sea-salt particles in Southern Ocean air, J. Atmos. Chem., 33, 299–319, doi:10.1023/A:1006120205159, 1999.; Butler, J. H., King, D. B., Lobert, J. M., Montzka, S. A., Yvon-Lewis, S. A., Hall, B. D., Warwick, N. J., Mondeel, D. J., Aydin, M., and Elkins, J. W.: Oceanic distributions and emissions of short-lived halocarbons, Global Biogeochem. Cy., 21, GB1023, doi:10.1029/2006GB002732, 2007.; Carpenter, L. J. and Liss, P. S.: On temperate sources of bromoform and other reactive organic bromine gases, J. Geophys. Res.-Atmos., 105, 20539–20547, doi:10.1029/2000JD900242, 2000.; Carpenter, L. J., Jones, C. E., Dunk, R. M., Hornsby, K. E., and Woeltjen, J.: Air-sea fluxes of biogenic bromine from the tropical and North Atlantic Ocean, Atmos. Chem. Phys., 9, 1805–1816, doi:10.5194/acp-9-1805-2009, 2009.; Dvortsov, V. L., Geller, M. A., Solomon, S., Schauffler, S. M., Atlas, E. L., and Blake, D. R.: Rethinking reactive halogen budgets in the midlatitude lower stratosphere, Geophys. Res. Lett., 26, 1699–1702, doi:10.1029/1999GL900309, 1999.; Gostlow, B., Robinson, A. D., Harris, N. R. P., O'Brien, L. M., Oram, D. E., Mills, G. P., Newton, H. M., Yong, S. E., and A Pyle, J.: micro-Dirac: an autonomous instrument for halocarbon measurements, Atmos. Meas. Tech., 3, 507–521, doi:10.5194/amt-3-507-2010, 2010.; Gschwend, P. M., Macfarlane, J. K., and Newman, K. A.: Volatile halogenated organic-compounds released to seawater from temperate marine macroalgae, Science, 227, 1033–1035, doi:10.1126/science.227.4690.1033, 1985.; Hosking, J. S., Russo, M. R., Braesicke, P., and Pyle, J. A.: Modelling deep convection and its impacts on the tropical tropopause layer, Atmos. Chem. Phys., 10, 11175–11188, doi:10.5194/acp-10-11175-2010, 2010.; Hossaini, R., Chipperfield, M. P., Monge-Sanz, B. M., Richards, N. A. D., Atlas, E., and Blake, D. R.: Bromoform and dibromomethane in the tropics: a 3-D model study of chemistry and transport, Atmos. Chem. Phys., 10, 719–735, doi:10.5194/acp-10-719-2010, 2010.; Hossaini, R., Chipperfield, M. P., Feng, W., Breider, T. J., Atlas, E., Montzka, S. A., Miller, B. R., Moore, F., and Elkins, J.: The contribution of natural and anthropogenic very short-lived species to stratospheric bromine, Atmos. Chem. Phys., 12, 371–380, doi:10.5194/acp-12-371-2012, 2012.; Hossaini, R., Mantle, H., Chipperfield, M. P., Montzka, S. A., Hamer, P., Ziska, F., Quack, B., Krüger, K., Tegtmeier, S., Atlas, E., Sala, S., Engel, A., Bönisch, H., Keber, T., Oram, D., Mills, G., Ordóñez, C., Saiz-Lopez, A., Warwick, N., Liang, Q., Feng, W., Moore, F., Miller, B. R., Marécal, V., Richards, N. A. D., Dorf, M., and Pfeilsticker, K.: Evaluating global emission inventories of biogenic bromocarbons, Atmos. Chem. Phys. Discuss., 13, 12485–12539, doi:10.5194/acpd-13-12485-2013, 2013.; Itoh, N. and Shinya, M.: Seasonal evolution of brom


Click To View

Additional Books

  • A Scale and Aerosol Aware Stochastic Con... (by )
  • Simulating Regional Scale Secondary Orga... (by )
  • Influences of In-cloud Aerosol Scavengin... (by )
  • Technical Note: the Air Quality Modeling... (by )
  • Impact of Primary Formaldehyde on Air Po... (by )
  • A Numerical Modelling Study on Regional ... (by )
  • Inverse Modelling of the Spatial Distrib... (by )
  • Observations of Iodine Monoxide (Io) Col... (by )
  • Spatial Evaluation of Volcanic Ash Forec... (by )
  • Personal Uv Exposure in High Albedo Alpi... (by )
  • Stratospheric Brono2 Observed by Mipas :... (by )
  • Sources of Carbonaceous Aerosol in the A... (by )
Scroll Left
Scroll Right


Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Fair are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.