Influence of transport over a mountain ridge on the chemical composition of marine aerosols during the ACE-2 Hillcloud Experiment

Research output: Contribution to journalArticle

Authors

  • BM Davison
  • Jonathan James
  • L Robertson
  • CN Hewitt

Abstract

Aerosol chemical composition and trace gas measurements were made at two locations on the northeastern peninsula of Tenerife during the ACE-2 HILLCLOUD experiment, between 28 June and 23 July 1997. Measurements were made of coarse (>2.5 mum aerodynamic diameter) and fine (10.0 mum (NSSS and NH4+), and 0.3, 1.5 and 4.0 mum (MSA). No significant production of other aerosol species was observed, with the exception of ammonium, which was formed at variable rates dependent on neutralisation of the aerosol with ammonia released from spatially non-uniform surface sources. Seasalt components were mainly present in coarse particles, although sub-micrometre chloride was also measured. Losses by deposition exceeded calculated expectations for all species, and were highest for the seasalt fraction and nitrate.

Details

Original languageEnglish
Pages (from-to)83-107
Number of pages25
JournalJournal of Atmospheric Chemistry
Volume41
Publication statusPublished - 1 Jan 2002

Keywords

  • sulphate, dimethylsulphide, marine aerosols, deposition, ACE-2, methanesulphonate