Other
Scientific paper
Jun 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3411810c&link_type=abstract
Geophysical Research Letters, Volume 34, Issue 11, CiteID L11810
Other
13
Atmospheric Composition And Structure: Air/Sea Constituent Fluxes (3339, 4504), Atmospheric Processes: Ocean/Atmosphere Interactions (0312, 4504), Atmospheric Composition And Structure: Troposphere: Composition And Chemistry
Scientific paper
Atmospheric mixing ratios of bromoform (CHBr3) measured over the eastern Atlantic Ocean were enhanced (4 to 13 pptv) between 8-25°N, 17-21°W, in air masses advected over the NW African coast/upwelling zone. The highest mixing ratios at 8-10°N were associated with a biomass burning plume from the African savannah belt. Airborne samples taken over Nigeria showed however that biomass burning here is not a source of CHBr3. Previously reported water samples taken near to the NW African upwelling zone do not support the very high levels of atmospheric CHBr3 observed, unless there is significant surface stratification of the atmospheric boundary layer. Other potential explanations include coastal macroalgae and/or sources within continental Africa. It is important to ascertain the nature of tropical sources of CHBr3 in order to establish the mechanisms of suggested feedbacks between organic bromine and climate change.
Carpenter Lucy J.
Dunk Rachel M.
Hopkins James R.
Hornsby Karen E.
Jones Charlotte E.
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