Author(s)

H. Coe, B.J. Allan, G. McFiggans and J.M.C. Plane

Abstract

Nitrate Radical Measurements in Background Atlantic and European Influenced Air Masses: Results from Coastal Sites in Ireland and Tenerife A contribution to subproject TOR-2 2 /"•"» "\ f _T7* *~f^.r~ *~ -,*• H Coe/ B J Allan/ G McFiggans" and J.M.C. Plane" ^Department of Physics, UMIST, P.O. Box 88, Manchester M60 1QD, UK ^School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, UK Introduction Nitrate radical (NOg) measurements have been made by long pass differential optical absorption spectroscopy (DOAS) at Mace Head, Ireland during April and May 1997 and at Taganana, on the north coast of the island of Tenerife, during July and August. The technique has been discussed in detail by Allan et ai, (1998) and Carslaw et al, (1997). Both of these sites are remote from local sources and are impacted by clean Atlantic air masses, some of which retain residual pollution from the US. As

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