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Factors Influencing the Contribution of Ion-induced Nucleation in a Boreal Forest, Finland : Volume 9, Issue 6 (01/12/2009)

By Gagné, S.

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Book Id: WPLBN0003992401
Format Type: PDF Article :
File Size: Pages 40
Reproduction Date: 2015

Title: Factors Influencing the Contribution of Ion-induced Nucleation in a Boreal Forest, Finland : Volume 9, Issue 6 (01/12/2009)  
Author: Gagné, S.
Volume: Vol. 9, Issue 6
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2009
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Kerminen, V., Petäjä, T., Nieminen, T., Kurtén, T., Manninen, H. E., Kulmala, M.,...Boy, M. (2009). Factors Influencing the Contribution of Ion-induced Nucleation in a Boreal Forest, Finland : Volume 9, Issue 6 (01/12/2009). Retrieved from http://www.ebooklibrary.org/


Description
Description: Department of Physics, P.O. Box 64, 00014 University of Helsinki, Finland. We present the longest series of measurements so far (2 years and 7 months) made with an Ion-DMPS at the SMEAR II measurement station in Hyytiälä, Southern Finland. We show that the classification of overcharged (implying some participation of ion-induced nucleation) and undercharged (implying no or very little participation of ion-induced nucleation) days based on Ion-DMPS measurements agrees with the fraction of ion-induced nucleation based on NAIS measurements. We analyzed the influence of different parameters on the contribution of ion-induced nucleation to the total particle formation rate. We found that the fraction of ion-induced nucleation is typically higher on warmer, drier and sunnier days compared to colder days with less solar radiation and a higher relative humidity. Also, we observed that bigger concentrations of new particles were produced on days with a smaller fraction of ion-induced nucleation. Moreover, sulfuric acid concentrations were smaller for days with a bigger fraction of ion-induced nucleation. Finally, we propose tentative explanations on how these different parameters influence the different nucleation mechanisms, and show that the different mechanisms seem to take place at the same time during an event. The relative contribution of the different mechanisms seems to vary depending on the surrounding conditions.

Summary
Factors influencing the contribution of ion-induced nucleation in a boreal forest, Finland

Excerpt
Mirme, A., Tamm, E., Mordas, G., Vana, M., Uin, J., Mirme, S., Bernotas, T., Laakso, L., Hirsikko, A., and Kulmala, M.: A widerange multi-channel Air Ion Spectrometer, Boreal Environ. Res., 12, 247–264, 2007.; Mirme, S., Mirme, A., Minikin, A., Petzold, A., Hõrrak, U., Kerminen, V.-M., and Kulmala, M.: Atmospheric sub-3 nm particles at high altitudes, Atmos. Chem. Phys. Discuss., 9, 19435–19470, 2009.; Myhre, G., Berglen, T. F., Johnsrud, M., Hoyle, C. R., Berntsen, T. K., Christopher, S. A., Fahey, D. W., Isaksen, I. S. A., Jones, T. A., Kahn, R. A., Loeb, N., Quinn, P., Remer, L., Schwartz, J. P., and Yttri, K. E.: Modelled radiative forcing of the direct aerosol effect with multi-observation evaluation, Atmos. Chem. Phys., 9, 1365–1392, 2009.; Nieminen, T., Manninen, H. E., Sihto, S.-L., Yli-Juuti, T., Mauldin III., R. L., Petäjä, T., Riipinen, I., Kerminen, V.-M., and Kulmala, M.: Connection of sulfuric acid to atmospheric nucleation in boreal forest, Environ. Sci. Technol., 43, 4715–4721, 2009.; Nilsson, E. D., Rannik, U., Kulmala, M., Buzorius, G., and O'Dowd, C. D.: Effect of the continental boundary layer evolution, convection, turbulence and entrainment on aerosol formation, Tellus, 53B, 441–461, 2001.; Paatero, J., Hatakka, J., and Viisanen, Y.: Concurrent Measurements of Airborne Radon-222, Lead-210 and Beryllium-7 at the Pallas-Sodankylä GAW Station, Northern Finland, Tech. Rep., Finnish Meteorological Institute, 1998.; Riipinen, I., Sihto, S.-L., Kulmala, M., Arnold, F., Dal Maso, M., Birmili, W., Saarnio, K., Teinilä, K., Kerminen, V.-M., Laaksonen, A., and Lehtinen, K. E. J.: Connections between atmospheric sulphuric acid and new particle formation during QUEST III–IV campaigns in Heidelberg and Hyytiälä, Atmos. Chem. Phys., 7, 1899–1914, 2007.; Stolzenburg, M. R. and McMurry, P. H.: An ultrafine aerosol condensation nucleus counter, Aerosol Sci. Tech., 14, 48–65, 1991.; Sogachev, A. and Panferov, O.: Modification of two-equation models to account for plant drag, Bound. Lay. Meteorol., 121, 229–266, doi:10.1007/s10546-006-9073-5, 2006.; Stanier, C. O., Khlystov, A. Y., and Pandis, S. N.: Nucleation events during the Pittsburgh Air Quality Study: Description and relation to key meteorological, gas phase, and aerosol parameters, Aerosol Sci. Tech., 38, 253–264, 2004.; Tammet, H.: Continuous scanning of the mobility and size distribution of charged clusters and particles in atmospheric air and the balanced scanning mobility analyzer BSMA, Atmos. Res., 82, 523–535, 2006.; Spracklen, D. V., Carslaw, K. S., Kulmala, M., Kerminen, V.-M., Sihto, S.-L., Riipinen, I., Merikanto, J., Mann, G. W., Chipperfield, M. P., Wiedensohler, A., Birmili, W., and Lihavainen, H.: Contribution of particle formation to global cloud condensation nuclei concentrations, Geophys. Res. Lett., 35, L06808, doi:10.1029/2007GL033038, 2008.; Stevens, B. and Feingol

 

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