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Tracing biomass burning aerosol from South America to Troll Research Station, Antarctica.

Fiebig, M.; Lunder, C.R.; Stohl, A.

The atmospheric observatory at the Norwegian Research Station Troll in Queen Maud Land, Antarctica, holds, since February 2007, the first all-year Antarctic atmospheric aerosol particle number size distribution measurements. These are colocated with measurements of the aerosol absorption and spectral scattering coefficients. In June 2007, this instrument set observed an aerosol whose properties were indicative of a biomass burning aerosol. These properties included two log-normal size distribution modes with median particle diameters of 0.105 ¿m and 0.36 ¿m, sharply falling off to smaller and larger sizes, and peaks in scattering and absorption coefficient. With backward plume calculations of the Lagrangian transport model FLEXPART and the MODIS fire activity product, a source-receptor relationship was established between biomass burning events in Central Brazil and the aerosol seen at Troll. This is the first direct evidence that the Antarctic continent is susceptible to emissions from as far north as Southern tropical latitudes.

2009

Summertime buildup and decay of lightning NOx and aged thunderstorm outflow above North America.

Cooper, O.R.; Eckhardt, S.; Crawford, J.H.; Brown, C.C.; Cohen, R.C.; Bertram, T.H.; Wooldridge, P.; Perring, A.; Brune, W.H.; Ren, X.; Brunner, D.; Baughcum, S.L.

2009

Characteristics of water-soluble inorganic chemical components in size-resolved airborne particulate matters - Sheffield, UK.

Xie, R.K.; Jackson, K.A.; Seip, H.M.; McLeod, C.W.; Wibetoe, G.; Schofield, M.J.; Anderson, D.; Hanssen, J.E.

2009

Aerosol optical and hygroscopic properties during TexAQS-GoMACCS 2006 and their impact on aerosol direct radiative forcing.

Massoli, P.; Bates, T.S.; Quinn, P.K.; Lack, D.A.; Baynard, T.; Lerner, B.M.; Tucker, S.C.; Brioude, J.; Stohl, A.; Williams, E.J.

2009

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