VARIATIONS OF TRACE GASES, METEOROLOGICAL PARAMETERS, AND THEIR CONNECTION WITH AEROSOL FORMATION IN BOREAL FORESTS
Rubrics: ORIGINAL ARTICLES
Authors:
1.
Geophysical Center, Russian Academy of Sciences, Moscow, Russia
2.
Department of Physical Sciences, University of Helsinki, Helsinki, Finland
3.
Department of Physical Sciences, University of Helsinki, Helsinki, Finland
Type:
Article
Pages:
from 1
to 4
Status:
Published
Received:
25.04.2008
Accepted:
25.04.2008
Published:
25.04.2008
Language:
English
Keywords:
trace gases, nucleation, seasonal variation, atmospheric nanoaerosols.
Abstract (English):
The data of observations at Hyytiauml;lauml; background station in 1997 - 2003 are analyzed for investigating the possible links between physical, chemical, and meteorological parameters for event and nonevent days for different seasons. The seasonal patterns of average trace gases concentrations O3, H2O, NOx = NO + NO2, SO2nbsp;, UV-A irradiation, temperature, relative humidity, condensational sinks are established and used for evaluating their influence on the seasonal dependence of formation and growth rates of particles in the nucleation mode. The condensational sinks are shown to play a crucial role in the chemical dynamics of the gaseous precursors and the aerosol particles. The variations of the sinks are mainly attributed to the humidification of the preexisting aerosol and thus strongly depend on the relative humidity.
The data of observations at Hyytiauml;lauml; background station in 1997 - 2003 are analyzed for investigating the possible links between physical, chemical, and meteorological parameters for event and nonevent days for different seasons. The seasonal patterns of average trace gases concentrations O3, H2O, NOx = NO + NO2, SO2nbsp;, UV-A irradiation, temperature, relative humidity, condensational sinks are established and used for evaluating their influence on the seasonal dependence of formation and growth rates of particles in the nucleation mode. The condensational sinks are shown to play a crucial role in the chemical dynamics of the gaseous precursors and the aerosol particles. The variations of the sinks are mainly attributed to the humidification of the preexisting aerosol and thus strongly depend on the relative humidity.
Keywords:
trace gases, nucleation, seasonal variation, atmospheric nanoaerosols.
trace gases, nucleation, seasonal variation, atmospheric nanoaerosols.
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