Atmospheric methane sulfonate and non‐sea‐salt sulfate records at the European Project for Ice Coring in Antarctica (EPICA) deep‐drilling site in Dronning Maud Land, Antarctica

Abstract

2À ratios exhibited a strong dependence on the MS concentration with systematically higher ratios at higher MS concentrations, a peculiarity which is also evident in a firn core drilled at this site.

Size distribution and ionic composition of marine summer aerosol at the continental Antarctic site Kohnen

“…Again, biogenic sulfur (particularly MS -), Na + and CP concentrations showed distinctive maxima though about one day after the LPS15 (Supplementary Material Fig. S.8), similar to the previous situation described by Piel et al (2006).…”

“…Another peculiarity of our recent observations was a preceding and well defined MS -peak pursued by a distinct nss-SO4 2-maximum (Fig. 9), in contrast to their simultaneous emergence in the aftermath of LPS02 described in Piel et al (2006). Given that MS -should have been primarily formed by heterogeneous liquid phase chemistry prevalent in the marine boundary layer (Legrand et al, 2001;Bardouki et al, 2002;Hoffmann et al, 2016), the segregated MS -peak indicated a temporary and efficient advection of such air masses.…”

“…S.1 The somewhat low sampling efficiency of the impactor for MS -may be due to partial re-evaporation from the tedlar foils (Teinilä et al, 2014). Finally, denuder experiments conducted by Piel et al (2006) Stohl, 1998). As for coastal site Neumayer we already discussed this point 2015), but for continental Antarctica, the persisting surface inversions 10 and katabatic winds pose additional challenges to air mass trajectory analyses.…”

“…EPICA at Kohnen (Piel et al, 2006) have demonstrated amongst others the conspicuous impact of a cyclone on aerosol transport: In the aftermath of an intense low pressure system over the eastern Weddell Sea region in combination with a blocking high pressure ridge to the East in early January 2002 (Birnbaum et al, 2006), MS -and nss-SO4 2-aerosol entry showed an outstanding maximum (Piel et al, 2006).…”

An update on polar aerosol optical properties using POLAR-AOD and other measurements performed during the International Polar Year

“…These data were then combined with the Wolff and Cachier (1998) estimates of BC and OC concentrations, to define the average percentage mass concentrations of nitrates, sulphates, sea salt, mineral dust, BC and OC, during the austral summer. (3) At South Pole, several measurements of particulate chemical composition were considered, giving the austral summer concentrations of sulphate, nitrate, ammonium, chlorine, sodium, and nss sulphate ions, MSA, and crustal matter (Tuncel et al, 1989;Arimoto et al, 2004;Piel et al, 2006).…”