Marine Organic Halide and Isoprene Emissions Near Mace Head, Ireland

James P. Greenberg; Alex B. Guenther; Andrew Turnipseed

doi:10.1071/EN05072

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Marine Organic Halide and Isoprene Emissions Near Mace Head, Ireland

James P. Greenberg ^A ^B , Alex B. Guenther ^A and Andrew Turnipseed ^A

+ Author Affiliations

- Author Affiliations

^A National Center for Atmospheric Research, PO Box 3000, Boulder, Colorado 80307, USA.

^B Corresponding author. Email: greenber@ucar.edu

Environmental Chemistry 2(4) 291-294 https://doi.org/10.1071/EN05072
Submitted: 9 September 2005 Accepted: 25 October 2005 Published: 8 December 2005

Environmental Context. Atmospheric aerosols have received increasing attention, not only because they include cloud condensation nuclei, essential for precipitation, but also because of their absorption and scattering of radiation, which may affect climate. The process of aerosol formation, however, is not well understood. This paper describes measurements of the fluxes into the atmosphere of several possible biogenic precursors to primary aerosol production.

Abstract. Vertical profiles of the concentration of several alkyl halides, as well as isoprene, were made from the surface to 200 m, using a tethered balloon platform, near Mace Head, Ireland in September–October 2003. Profiles indicate a surface source of several alkyl halides. Alkyl halides have been proposed as a source of new particles in the atmosphere. Estimates of emission rates (μg m⁻² h⁻¹) were made using a flux-gradient technique for CH₂Br₂ (0.8), CHBr₃ (6), CH₂IBr (0.1), CH₂I₂ (0.1), and isoprene (24).

Keywords.: aerosols — alkyl halides — biogenic emissions — iodine

Acknowledgments

We thank the National University of Ireland for the use of the facilities at the Mace Head Atmospheric Research Station and for support of our research activities, the Martin Ryan Institute for hosting part of our study, and E. Atlas, who provided calibration standards. The National Center for Atmospheric Research is operated by the University Corporation for Atmospheric Research and is sponsored by the National Science Foundation.

References

Marine Organic Halide and Isoprene Emissions Near Mace Head, Ireland

Acknowledgments

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