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Volume 15, issue 23
Atmos. Chem. Phys., 15, 13339–13364, 2015
https://doi.org/10.5194/acp-15-13339-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Atmos. Chem. Phys., 15, 13339–13364, 2015
https://doi.org/10.5194/acp-15-13339-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 02 Dec 2015

Research article | 02 Dec 2015

Boundary layer new particle formation over East Antarctic sea ice – possible Hg-driven nucleation?

R. S. Humphries et al.

Data sets

Aurora Australis Voyage VMS 2012/13 Track and Underway Data (SIPEX II) Reeve, J. https://doi.org/10.4225/15/546580A408D97

In-situ total aerosol number using condensation particle counters as observed during the SIPEX II voyage of the Aurora Australis, 2012 Humphries, R Wilson, S Keywood, M Ward, J Schofield, R https://doi.org/10.4225/15/5342423241BE4

In-situ atmospheric ozone measurements observed during the SIPEX II voyage of the Aurora Australis, 2012 Galbally, I Molloy, S Klekociuk, A Humphries, R Schofield, R https://doi.org/10.4225/15/53266BE438281

In-situ Halocarbon trace-gas concentrations measured by the µDirac GC-ECD during the SIPEX II voyage of the Aurora Australis, 2012 Robinson, A Harris, N Humphries, R Kreher, K Johnston, P Thomas, A Schofield, R https://doi.org/10.4225/15/53266BB82B3A3

Gaseous elemental mercury measurements of boundary layer air made by a Tekran 2537 during the SIPEX II voyage of the Aurora Australis, 2012 Gionfriddo, C Tate, M Krabbenhoft, D Moreau, J Schofield, R https://doi.org/10.4225/15/53266BDA687FC

Trace-gas profiles of the boundary layer from Multi-Axis Differential Optical Spectroscopy MAX-DOAS collected during the SIPEX II voyage of the Aurora Australis, 2012 Schofield, R Kreher, K Johnston, P Thomas, A Humphries, R https://doi.org/10.4225/15/53266BD1D37E6

Hysplit atmospheric back-trajectories at 10m, 500m, 1000m, 1500m, 2000m, 2500m, 3000m, 3500m, 4000m collected during the SIPEX II voyage of the Aurora Australis, 2012 Klekociuk, A Schofield, R https://doi.org/10.4225/15/532F83302FF88

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Short summary
An atmospheric new particle formation event that was observed in the pristine East Antarctic pack ice during a springtime voyage in 2012 is characterised in terms of formation and growth rates. Known nucleation mechanisms (e.g. those involving sulfate, iodine and organics) were unable to explain observations; however, correlations with total gaseous mercury were found, leading to the suggestion of a possible mercury-driven nucleation mechanism not previously described.
An atmospheric new particle formation event that was observed in the pristine East Antarctic...
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