On small particles in the Arctic summer boundary layer: observations at two different heights near Ny-Ålesund, Svalbard

Johan Ström; Ann-Christine Engvall; Frank Delbart; Radovan Krejci; Renate Treffeisen

doi:10.1111/j.1600-0889.2009.00412.x

Authors:

Johan Ström ,

Department of Applied Environmental Science, Stockholm University, SE; Norwegian Polar Institute, NO

Ann-Christine Engvall,

Norwegian Institute for Air Research (NILU), NO

Frank Delbart,

CNRS, IPEV – French Polar Institute, FR

Radovan Krejci,

Norwegian Institute for Air Research (NILU), NO

Renate Treffeisen

Alfred Wegener Institute, DE

Abstract

Concurrent observations of particle number densities and size distributions observed at two different heights (near ocean level and 475 m above sea level) in Ny-Ålesund, Svalbard were studied with respect to the diurnal variation during a summer period in June 2004. The results show that observed variation in particle number density in the Arctic boundary layer may be strongly modulated by vertical mixing and dilution. The particles appeared to be formed in the early morning when solar intensity reached about 30% of the mid-day intensity. Based on differences in the observed number densities at the two heights it appears as if particles are formed in the lower part of the boundary layer. The formation rate of 10 nm diameter particles is estimated to be 0.11 cm⁻³ s⁻¹ and the growth rate is in a range between 1 and 2 nm h⁻¹.

How to Cite: Ström, J., Engvall, A.-C., Delbart, F., Krejci, R. and Treffeisen, R., 2009. On small particles in the Arctic summer boundary layer: observations at two different heights near Ny-Ålesund, Svalbard. Tellus B: Chemical and Physical Meteorology, 61(2), pp.473–482. DOI: http://doi.org/10.1111/j.1600-0889.2009.00412.x

Accepted on 14 Nov 2008 Submitted on 15 May 2008

References

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[CIT0001] Curry , J . 1995 . Interactions among aerosols, clouds, and climate of the Arctic Ocean . Sci. Tot. Environ . 160/161 , 777 – 791 .

[CIT0002] Engvall , A. C. , Krejci , R. , Strom , J. , Treffeisen , R. , Scheele , R. and co-authors. 2008. Changes in aerosol properties during spring-summer period in the Arctic troposphere. Atmos. Chem. Phys. 8, 445 – 462.

[CIT0003] Hassol , S. J . 2005 . ACA, Impacts of a Warming Arctic; Arctic Climate Impact Assessment . Cambridge University Press , Cambridge .

[CIT0004] IPCC 2007 . Intergovernmental Panel on Climate Change (2007a), Cli-mate Change 2007—the Fourth Assessment Report of the IPCC . Cam-bridge: Cambridge University Press, ISBN 978 0521 88009 – 1 .

[CIT0005] Leck , C. and Bigg , E. K . 1999 . Aerosol production over remote marine areas—a new route . Geophys. Res. Lett . 26 , 3577 – 3580 .

[CIT0006] Komppula , M , Lihavainen , H. , Hataldca , J. and Paatero , J . 2003 . Observa-tions of new particle formation and size distributions at two different heights and surroundings in subarctic area in northern Finland . J. Geophys. Res . 108 , 4295 , https://doi.org/10.1029/2002JDO02939 .

[CIT0007] Kulmala , M. , Dal Maso , J. , Mäkelä , L. , Pirjola , M. , Väkevd , P and co-authors. 2001. On the formation, growth and composition of nu-cleation mode particles. Tellus 53B, 479 – 490.

[CIT0008] Kulmala , M. , Petäjä , T. , Miinildciinen , P. , Koponen , I. K. , Dal Maso , M. and co-authors. 2005. On the growth of nucleation mode particles: source rates of condensable vapor in polluted and clean environments. J. Atmos. Chem. Phys. 5, 409 – 416.

[CIT0009] Rinke , A. , Dethloff K. and Fortman M . 2004 . Regional cli-mate effects of Arctic haze . Geophys. Res. Lett . 31 , L16202 , https://doi.org/10.1029/2004GL020318 .

[CIT0010] Strom , J. , Umegard , J. , Torseth , K. , Tunved , R , Hansson , H.-C. and co-authors. 2003. One year of particle size distribution and aerosol chemical composition measurements at the Zeppelin Station, Sval-bard, March 2000-March 2001. Phys. Chem. Earth 28, 1181 – 1190.

[CIT0011] Treffeisen , R. , Krejci , R. , Strom , J. , Engvall , A. C. , Herber , A. and co-authors. 2007. Humidity observations in the Arctic troposphere over Ny-Álesund, Svalbard based on 15 years of radiosonde data. Atmos. Chem. Phys. 7, 2721 – 2732.

[CIT0012] Wiedensohler , A. , Covert , D. S. , Swietlicki , E. , Aalto , R , Heintzenberg , J. and co-authors. 1996. Occurrence of an ultrafine particle mode less than 20 nm in diameter in the marine boundary layer during Arctic summer and autumn. Tellus 48B, 213 – 222.

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Original Research Papers

On small particles in the Arctic summer boundary layer: observations at two different heights near Ny-Ålesund, Svalbard

Authors:

Johan Ström ,

Department of Applied Environmental Science, Stockholm University, SE; Norwegian Polar Institute, NO

X close

Ann-Christine Engvall,

Norwegian Institute for Air Research (NILU), NO

X close

Frank Delbart,

CNRS, IPEV – French Polar Institute, FR

X close

Radovan Krejci,

Norwegian Institute for Air Research (NILU), NO

X close

Renate Treffeisen

Alfred Wegener Institute, DE

X close

Abstract

References