Title

The contribution of sulfate and oxidized organics in climatically important ultrafine particles at a coral reef environment

Document Type

Article

Publication details

Vaattoovaara, P, Swan, HB, Jones, GB, Deschaseaux, E, Milijevic, B, Laaksonen, A & Ristovski, Z 2013, 'The contribution of sulfate and oxidized organics in climatically important ultrafine particles at a coral reef environment', World Academy of Science, Engineering and Technology, vol. 82, pp. 902-906.

Peer Reviewed

Peer-Reviewed

Abstract

In order to investigate the properties of coral reef origin secondary organic aerosol, ethanol affinity to atmospheric nucleation mode particles (diameter < 15 nm) was measured at the Heron reef marine environment in the South Pacific Ocean during the first coral reef aerosol characterization experiment in May-June 2011 using an ultrafine organic tandem differential mobility analyser. Our campaign study at Heron reef showed that the nucleation mode size particles (diameter = 10 nm) composition contain internally mixed sulfate and oxidized organic components in approximately equal proportion in sunny and still conditions around low tide time, indicating local biogenic sources. The produced secondary compounds and aerosols have potential to contribute to cloud condensation nuclei formation and properties that may affect
local low-level cloud formation over the GBR. Additionally, primary marine sea-salt and organic material during windy conditions and anthropogenic/biogenic sources during continental air masses can affect the properties of these particles.

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