Air-sea fluxes of biogenic bromine from the tropical and North Atlantic Ocean

L. J. Carpenter; C. E. Jones; R. M. Dunk; K. E. Hornsby; J. Woeltjen

doi:10.5194/acp-9-1805-2009

Air-sea fluxes of biogenic bromine from the tropical and North Atlantic Ocean

L. J. Carpenter, C. E. Jones, R. M. Dunk, K. E. Hornsby, J. Woeltjen

School of Environmental Sciences

Research output: Contribution to journal › Article › peer-review

72 Citations (Scopus)

Abstract

Air-sea fluxes and bulk seawater and atmospheric concentrations of bromoform (CHBr3) and dibromomethane (CH2Br2) were measured during two research cruises in the northeast Atlantic (53-59° N, June-July 2006) and tropical eastern Atlantic Ocean including over the African coastal upwelling system (16-35° N May-June 2007). Saturations and sea-air fluxes of these compounds generally decreased in the order coastal > upwelling > shelf > open ocean, and outside of coastal regions, a broad trend of elevated surface seawater concentrations with high chlorophyll-a was observed. We show that upwelling regions (coastal and equatorial) represent regional hot spots of bromocarbons, but are probably not of major significance globally, contributing at most a few percent of the total global emissions of CHBr3 and CH2Br2. From limited data from eastern Atlantic coastlines, we tentatively suggest that globally, coastal oceans (depth

Original language	English
Pages (from-to)	1805-1816
Number of pages	12
Journal	Atmospheric Chemistry and Physics
Volume	9
Issue number	5
DOIs	https://doi.org/10.5194/acp-9-1805-2009
Publication status	Published - 11 Mar 2009

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10.5194/acp-9-1805-2009Licence: CC BY

http://www.atmos-chem-phys.net/9/1805/2009/Licence: CC BY

Cite this

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title = "Air-sea fluxes of biogenic bromine from the tropical and North Atlantic Ocean",

abstract = "Air-sea fluxes and bulk seawater and atmospheric concentrations of bromoform (CHBr3) and dibromomethane (CH2Br2) were measured during two research cruises in the northeast Atlantic (53-59° N, June-July 2006) and tropical eastern Atlantic Ocean including over the African coastal upwelling system (16-35° N May-June 2007). Saturations and sea-air fluxes of these compounds generally decreased in the order coastal > upwelling > shelf > open ocean, and outside of coastal regions, a broad trend of elevated surface seawater concentrations with high chlorophyll-a was observed. We show that upwelling regions (coastal and equatorial) represent regional hot spots of bromocarbons, but are probably not of major significance globally, contributing at most a few percent of the total global emissions of CHBr3 and CH2Br2. From limited data from eastern Atlantic coastlines, we tentatively suggest that globally, coastal oceans (depth ",

author = "Carpenter, {L. J.} and Jones, {C. E.} and Dunk, {R. M.} and Hornsby, {K. E.} and J. Woeltjen",

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AU - Carpenter, L. J.

AU - Jones, C. E.

AU - Dunk, R. M.

AU - Hornsby, K. E.

AU - Woeltjen, J.

PY - 2009/3/11

Y1 - 2009/3/11

N2 - Air-sea fluxes and bulk seawater and atmospheric concentrations of bromoform (CHBr3) and dibromomethane (CH2Br2) were measured during two research cruises in the northeast Atlantic (53-59° N, June-July 2006) and tropical eastern Atlantic Ocean including over the African coastal upwelling system (16-35° N May-June 2007). Saturations and sea-air fluxes of these compounds generally decreased in the order coastal > upwelling > shelf > open ocean, and outside of coastal regions, a broad trend of elevated surface seawater concentrations with high chlorophyll-a was observed. We show that upwelling regions (coastal and equatorial) represent regional hot spots of bromocarbons, but are probably not of major significance globally, contributing at most a few percent of the total global emissions of CHBr3 and CH2Br2. From limited data from eastern Atlantic coastlines, we tentatively suggest that globally, coastal oceans (depth

AB - Air-sea fluxes and bulk seawater and atmospheric concentrations of bromoform (CHBr3) and dibromomethane (CH2Br2) were measured during two research cruises in the northeast Atlantic (53-59° N, June-July 2006) and tropical eastern Atlantic Ocean including over the African coastal upwelling system (16-35° N May-June 2007). Saturations and sea-air fluxes of these compounds generally decreased in the order coastal > upwelling > shelf > open ocean, and outside of coastal regions, a broad trend of elevated surface seawater concentrations with high chlorophyll-a was observed. We show that upwelling regions (coastal and equatorial) represent regional hot spots of bromocarbons, but are probably not of major significance globally, contributing at most a few percent of the total global emissions of CHBr3 and CH2Br2. From limited data from eastern Atlantic coastlines, we tentatively suggest that globally, coastal oceans (depth

U2 - 10.5194/acp-9-1805-2009

DO - 10.5194/acp-9-1805-2009

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JF - Atmospheric Chemistry and Physics

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