TY - JOUR
T1 - Indirect evidence of the composition of nucleation mode atmospheric particles in the high Arctic
AU - Giamarelou, Maria
AU - Eleftheriadis, Konstantinos
AU - Nyeki, Stephan
AU - Tunved, Peter
AU - Torseth, Kjetil
AU - Biskos, George
PY - 2016/1/27
Y1 - 2016/1/27
N2 - Previous long-term observations have shown that nanoparticle formation events are common in the summer-time high Arctic and linked to local photochemical activity. However, current knowledge is limited with respect to the chemical precursors of resulting nanoparticles and the compounds involved in their subsequent growth. Here we report case-study measurements during new particle formation (NPF) events of the particle size distribution (diameter > 7 nm) and for the first time the volatility of monodisperse particles having diameter ≤40 nm, providing indirect information about their composition. Volatility measurements provide indirect evidence that a predominant fraction of the 12 nm particle population is ammoniated sulfates in the summertime high Arctic. Our observations further suggest that the majority of the sub-40 nm particle population during NPF events does not exist in the form of sulfuric acid but rather as partly or fully neutralized ammoniated sulfates.
AB - Previous long-term observations have shown that nanoparticle formation events are common in the summer-time high Arctic and linked to local photochemical activity. However, current knowledge is limited with respect to the chemical precursors of resulting nanoparticles and the compounds involved in their subsequent growth. Here we report case-study measurements during new particle formation (NPF) events of the particle size distribution (diameter > 7 nm) and for the first time the volatility of monodisperse particles having diameter ≤40 nm, providing indirect information about their composition. Volatility measurements provide indirect evidence that a predominant fraction of the 12 nm particle population is ammoniated sulfates in the summertime high Arctic. Our observations further suggest that the majority of the sub-40 nm particle population during NPF events does not exist in the form of sulfuric acid but rather as partly or fully neutralized ammoniated sulfates.
KW - ammonium sulfate
KW - high Arctic
KW - nucleation
UR - http://www.scopus.com/inward/record.url?scp=84958183821&partnerID=8YFLogxK
UR - http://resolver.tudelft.nl/uuid:8013b70d-833e-432f-bf8f-56bca89bcb72
U2 - 10.1002/2015JD023646
DO - 10.1002/2015JD023646
M3 - Article
AN - SCOPUS:84958183821
VL - 121
SP - 965
EP - 975
JO - Journal Of Geophysical Research-Atmospheres
JF - Journal Of Geophysical Research-Atmospheres
SN - 2169-897x
IS - 2
ER -