Individual-particle analyses of coastal Antarctic aerosols

Citation
H. Mouri et al., Individual-particle analyses of coastal Antarctic aerosols, TELLUS B, 51(3), 1999, pp. 603-611
Citations number
29
Categorie Soggetti
Earth Sciences
Journal title
TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY
ISSN journal
02806509 → ACNP
Volume
51
Issue
3
Year of publication
1999
Pages
603 - 611
Database
ISI
SICI code
0280-6509(199907)51:3<603:IAOCAA>2.0.ZU;2-H
Abstract
Samplings of aerosol particles were made almost monthly throughout a year a t a coastal Antarctic station Syowa (69 degrees 00'S, 39 degrees 35'E). Wit h X-ray spectrometry. elemental composition of the individual particles is studied. The dominant aerosol constituents are sulfur species and sea salt. They are internally mixed with each other in most cases. We find seasonal variations in (1) the relative importance of sulfur and sea salt, and (2) t he modification of sea salt by acidic materials. In the austral-summer samp les, the number fractions of sulfur-rich particles and modified sea-salt pa rticles are high, because the production of marine organosulfer was enhance d. In the austral-winter samples, the number fraction of unmodified sea-sal t particles is high, because severe storms enhanced the production of sea s alt.