New particle formation at the coastal Antarctic site Neumayer in 2012 and 2014

DOI

We measured condensation particle (CP) concentrations and particle size distributions at the coastal Antarctic station Neumayer (70°39'S, 8°15'W) during two summer campaigns (from 20 January to 26 March 2012 and 1 February to 30 April 2014) and during polar night between 12 August and 27 September 2014 in the particle diameter (Dp) range from 2.94 nm to 60.4 nm (2012) and from 6.26 nm to 212.9 nm (2014). During both summer campaigns we identified all in all 44 new particle formation (NPF) events. From 10 NPF events, particle growth rates could be determined to be around 0.90±0.46 nm/h (mean ± std; range: 0.4 nm/h to 1.9 nm/h). With the exception of one case, particle growth was generally restricted to the nucleation mode (Dp < 25 nm) and the duration of NPF events was typically around 6.0±1.5 h (mean ± std; range: 4 h to 9 h). Thus in the main, particles did not grow up to sizes required for acting as cloud condensation nuclei. NPF during summer usually occurred in the afternoon in coherence with local photochemistry. During winter, two NPF events could be detected, though showing no ascertainable particle growth. A simple estimation indicated that apart from sulfuric acid, the derived growth rates required other low volatile precursor vapours.

Supplement to: Weller, Rolf; Schmidt, Kerstin; Teinilä, Kimmo; Hillamo, Risto (2015): Natural new particle formation at the coastal Antarctic site Neumayer. Atmospheric Chemistry and Physics, 15(19), 11399-11410

Identifier
DOI https://doi.org/10.1594/PANGAEA.845024
Related Identifier IsSupplementTo https://doi.org/10.5194/acp-15-11399-2015
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.845024
Provenance
Creator Weller, Rolf ORCID logo; Schmidt, Kerstin; Teinilä, Kimmo; Hillamo, Risto
Publisher PANGAEA
Publication Year 2015
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Representation
Resource Type Supplementary Publication Series of Datasets; Collection
Format application/zip
Size 2 datasets
Discipline Chemistry; Natural Sciences
Spatial Coverage (-8.250 LON, -70.650 LAT)
Temporal Coverage Begin 2012-01-16T17:00:00Z
Temporal Coverage End 2014-09-27T16:00:00Z