Characterisation of CH3X fluxes from Scottish and high latitude wetlands
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Date
2010Author
Hardacre, Catherine
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Abstract
Methyl bromide (CH3Br) and methyl chloride (CH3Cl) are two halocarbons that are
unique in that they play a significant role in stratospheric ozone destruction, and are
mainly produced by natural systems. The current average tropospheric mixing ratios
are 7.9 pptv CH3Br and 550 pptv CH3Cl (WMO, 2007). Although CH3Br and CH3Cl
are present in such low concentrations, their atmospheric life times are sufficiently
long that they can be transported to the stratosphere via the tropical tropopause at the
equator. This process takes approximately six months