In:
Atmospheric Chemistry and Physics, Copernicus GmbH, Vol. 21, No. 16 ( 2021-08-26), p. 12649-12663
Abstract:
Abstract. We compared observations of aerosol particle formation and growth in
different parts of the planetary boundary layer at two different
environments that have frequent new particle formation (NPF) events. In
summer 2012 we had a campaign in Po Valley, Italy (urban background), and in
spring 2013 a similar campaign took place in Hyytiälä, Finland
(rural background). Our study consists of three case studies of airborne and
ground-based measurements of ion and particle size distribution from
∼1 nm. The airborne measurements were performed using a
Zeppelin inside the boundary layer up to 1000 m altitude. Our observations
show the onset of regional NPF and the subsequent growth of the aerosol
particles happening almost uniformly inside the mixed layer (ML) in both
locations. However, in Hyytiälä we noticed local enhancement in the
intensity of NPF caused by mesoscale boundary layer (BL) dynamics. Additionally, our
observations indicate that in Hyytiälä NPF was probably also taking
place above the ML. In Po Valley we observed NPF that was limited to a
specific air mass.
Type of Medium:
Online Resource
ISSN:
1680-7324
DOI:
10.5194/acp-21-12649-2021
Language:
English
Publisher:
Copernicus GmbH
Publication Date:
2021
detail.hit.zdb_id:
2092549-9
detail.hit.zdb_id:
2069847-1
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