On the mode-segregated aerosol particle number concentration load : contributions of primary and secondary particles in Hyytiälä and Nanjing

Show full item record



Permalink

http://hdl.handle.net/10138/165340

Citation

Kulmala , M , Luoma , K , Virkkula , A , Petäjä , T , Paasonen , P , Kerminen , V-M , Nie , W , Qi , X , Shen , Y , Chi , X & Ding , A 2016 , ' On the mode-segregated aerosol particle number concentration load : contributions of primary and secondary particles in Hyytiälä and Nanjing ' , Boreal Environment Research , vol. 21 , no. 3-4 , pp. 319-331 .

Title: On the mode-segregated aerosol particle number concentration load : contributions of primary and secondary particles in Hyytiälä and Nanjing
Author: Kulmala, Markku; Luoma, Krista; Virkkula, Aki; Petäjä, Tuukka; Paasonen, Pauli; Kerminen, Veli-Matti; Nie, Wei; Qi, Ximeng; Shen, Yicheng; Chi, Xuguang; Ding, Aijun
Contributor: University of Helsinki, Department of Physics
University of Helsinki, Department of Physics
University of Helsinki, Department of Physics
University of Helsinki, Department of Physics
University of Helsinki, Department of Physics
University of Helsinki, Department of Physics
Date: 2016-05-23
Language: eng
Number of pages: 13
Belongs to series: Boreal Environment Research
ISSN: 1239-6095
URI: http://hdl.handle.net/10138/165340
Abstract: Aerosol particle concentrations in the atmosphere are governed by their sources and sinks. Sources include directly-emitted (primary) and secondary aerosol particles formed from gas-phase precursor compounds. The relative importance of primary and secondary aerosol particles varies regionally and with time. In this work, we investigated primary and secondary contributions to mode-segregated particle number concentrations by using black carbon as a tracer for the primary aerosol number concentration. We studied separately nucleation, Aitken and accumulation mode concentrations at a rural boreal forest site (Hyytiala, Finland) and in a rather polluted megacity environment (Nanjing, China) using observational data from 2011 to 2014. In both places and in all the modes, the majority of particles were estimated to be of secondary origin. Even in Nanjing, only about half of the accumulation mode particles were estimated to be of primary origin. Secondary particles dominated particularly in the nucleation and Aitken modes.
Subject: YANGTZE-RIVER DELTA
ATMOSPHERIC NUCLEATION
ULTRAFINE PARTICLES
PRIMARY EMISSIONS
SORPES STATION
INTEGRATING NEPHELOMETER
ORGANIC AEROSOL
SHIP EMISSIONS
EASTERN CHINA
AIR
114 Physical sciences
1172 Environmental sciences
Rights:


Files in this item

Total number of downloads: Loading...

Files Size Format View
ber21_319.pdf 7.882Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record