Atmospheric bromoform at Mace Head

Atmospheric bromoform at Mace Head, Ireland: seasonality and evidence for a peatland source

In situ atmospheric observations of bromoform (CHBr3) made over a 2.5 year period at Mace Head, Ireland from May 2001Dec 2003, including during the NAMBLEX (North Atlantic Marine Boundary Layer Experiment) campaign, show broad maxima from spring until autumn and winter minima, with mixing ratios of 5.3+1.0 pptv (mid March mid October) and 1.8+0.8 pptv (DecemberFebruary). This indicates that, un...

The very short - lived ozone depleting substance CHBr 3 ( bromoform ) : Revised UV absorption spectrum , atmospheric lifetime and ozone depletion potential

(bromoform): revised UV absorption spectrum, atmospheric lifetime and ozone depletion potential

CHBr3 (bromoform) is a short-lived atmospheric trace compound that is primarily of natural origin and is a source of reactive bromine in both the troposphere and stratosphere. Estimating the overall atmospheric impact of CHBr3 and its transport to the stratosphere requires a thorough understanding of its atmospheric loss processes, which are primarily UV photolysis and reaction with the OH radi...

Marine sources of bromoform in the global open ocean – global patterns and emissions

Bromoform (CHBr3) is one important precursor of atmospheric reactive bromine species that are involved in ozone depletion in the troposphere and stratosphere. In the open ocean bromoform production is linked to phytoplankton that contains the enzyme bromoperoxidase. Coastal sources of bromoform are higher than open ocean sources. However, open ocean emissions are important because the transfer ...

Bromoform and dibromomethane in the tropics

Bromoform and dibromomethane in the tropics: a 3-D model study of chemistry and transport R. Hossaini, M. P. Chipperfield, B. M. Monge-Sanz, N. A. D. Richards, E. Atlas, and D. R. Blake Institute for Climate and Atmospheric Science, School of Earth and Environment, University of Leeds, Leeds, UK Rosenstiel School of Marine and Atmospheric Science, University of Miami, USA Department of Chemistr...