TY  -  
T1  - Long-term trends in PM2.5 mass and particle number concentrations in urban air : The impacts of mitigation measures and extreme events due to changing climates 
SN  -  /  
UR  - http://hdl.handle.net/10138/328684 
T3  -  
A1  - de Jesus, Alma Lorelei; Thompson, Helen; Knibbs, Luke D.; Kowalski, Michal; Cyrys, Josef; Niemi, Jarkko V.; Kousa, Anu; Timonen, Hilkka; Luoma, Krista; Petäjä, Tuukka; Beddows, David; Harrison, Roy M.; Hopke, Philip; Morawska, Lidia 
A2  -  
PB  -  
Y1  - 2020 
LA  - eng 
AB  - Urbanisation and industrialisation led to the increase of ambient particulate matter (PM) concentration. While subsequent regulations may have resulted in the decrease of some PM matrices, the simultaneous changes in climate affecting local meteorological conditions could also have played a role. To gain an insight into this complex matter, this study investigated the long-term trends of two important matrices, the particle mass (PM2.5) and particle number concentrations (PNC), and the factors t... 
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IS  -  
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OP  -  
KW  - PM2.5; Particle number concentration; Ultrafine particles; Mitigation; Climate variabilities; FINE PARTICULATE MATTER; NORTH-ATLANTIC OSCILLATION; TIME-SERIES ANALYSIS; PACIFIC WP PATTERN; ARCTIC SEA-ICE; NEW-YORK-STATE; ULTRAFINE PARTICLES; CHEMICAL-CHARACTERIZATION; SIZE DISTRIBUTIONS; SOURCE APPORTIONMENT; 116 Chemical sciences; 114 Physical sciences 
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ER  -