Aircraft measurements of very short-lived halocarbons over the tropical Atlantic Ocean

TY - JOUR

T1 - Aircraft measurements of very short-lived halocarbons over the tropical Atlantic Ocean

AU - Andrews, S.J.

AU - Jones, C.E.

AU - Carpenter, L.J.

PY - 2013/3/16

Y1 - 2013/3/16

N2 - Atmospheric mixing ratios of CHI, CH ClI, CHBr, and CHBr were quantified from whole air samples collected aboard the FAAM BAe 146-301 atmospheric research aircraft during flights over the tropical Atlantic Ocean (30°N to 10°S) as part of the Trade Wind Ozone Photochemistry Experiment (TROMPEX) in September 2009. Mixing ratios of CHI and CHClI increased with decreasing latitude, and concentrations of all measured halocarbons were elevated with increasing proximity to the oceanic upwelling along the coast of Mauritania. Vertical profiles highlighted the rapid photolytic degradation of these compounds within the tropical troposphere, with CHClI concentrations reduced by 50% at the top of the boundary layer. The spatial distributions of CHClI indicated an open ocean source.

AB - Atmospheric mixing ratios of CHI, CH ClI, CHBr, and CHBr were quantified from whole air samples collected aboard the FAAM BAe 146-301 atmospheric research aircraft during flights over the tropical Atlantic Ocean (30°N to 10°S) as part of the Trade Wind Ozone Photochemistry Experiment (TROMPEX) in September 2009. Mixing ratios of CHI and CHClI increased with decreasing latitude, and concentrations of all measured halocarbons were elevated with increasing proximity to the oceanic upwelling along the coast of Mauritania. Vertical profiles highlighted the rapid photolytic degradation of these compounds within the tropical troposphere, with CHClI concentrations reduced by 50% at the top of the boundary layer. The spatial distributions of CHClI indicated an open ocean source.

UR - http://www.scopus.com/inward/record.url?scp=84876800468&partnerID=8YFLogxK

U2 - 10.1002/grl.50141

DO - 10.1002/grl.50141

M3 - Article

AN - SCOPUS:84876800468

SN - 0094-8276

VL - 40

SP - 1005

EP - 1010

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 5

ER -