Dimethyl sulfide and aerosol sulfate in the arctic atmosphere ...

• Main Author: Rempillo, Ofelia Tampis
• Format: Article in Journal/Newspaper
• Language: English
• Published: University of Calgary 2011
• Subjects: Arctic; Baffin Bay; Baffin
• Online Access: https://dx.doi.org/10.11575/prism/4141; https://prism.ucalgary.ca/handle/1880/105142

Bibliography: p. 127-137 ... : Dimethyl sulfide (DMS) and its oxidation products, which have been proposed to provide a climate feedback mechanism by affecting aerosol and cloud radiative properties, were measured during onboard sampling campaigns in the Arctic in the Fall of 2007 and 2008. DMS concentrations were found to be localized with highly variable concentrations ranging from below detection limit (0.3 nmol/m3) to 14 nmol/m3. DMS flux was calculated based on surface water measurements conducted in open waters and yielded an average of 0.7 ?mol/m2/d along Baffin Bay. DMS oxidation products, sulfur dioxide (SO2) , methane sulfonic acid (MSA), and sulfate (SO/ -) in aerosols were also measured. Concentrations of atmospheric sulfur compounds during the campaign were [SO2] = 2.7- 135 nmol/m3 (2007) and 0.28-27 nmol/m3 (2008), [MSA] = 0.03-0.07 nmol/m3 (2007) and 0.02-0.14 (2008), and non-seasalt sulfate [nSS-So/-] = 0.5-7.0 nmol/m3 (2007) and 0.01-2.0 nmol/m3 (2008). Median daily biogenic SO2 and so/ - concentrations obtained from ...