Premium
Atmospheric methanesulfonic acid and non‐sea‐salt sulfate at Fanning and American Samoa
Author(s) -
Saltzman E. S.,
Savoie D. L.,
Prospero J. M.,
Zika R. G.
Publication year - 1985
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl012i007p00437
Subject(s) - methanesulfonic acid , sulfate , sea salt , oceanography , aerosol , environmental science , environmental chemistry , chemistry , geology , geography , meteorology , organic chemistry
Atmospheric concentrations of aerosol methanesulfonic acid (MSA) and non‐sea‐salt (nss) sulfate were measured in samples collected during one year periods at Fanning and American Samoa Islands in the Pacific Ocean. Mean concentrations were 0.045 (s=0.011) ug/m⊃3 MSA and 0.67 (s=0.13) ug/m⊃3 nss sulfate at Fanning, and 0.026 (s=0.012) ug/m⊃3 MSA and 0.41 (0.19) ug/m⊃3 nss sulfate at American Samoa. MSA and nss sulfate were significantly correlated at both stations (r=0.76), with a mean MSA/nss sulfate ratio of 0.065. The higher mean levels of MSA and nss sulfate at Fanning compared to American Samoa apparently reflect differences in the biological productivity of the surface ocean in the two regions.