Air quality in urban areas located in complex terrain is intimately related to meteorological phenomena that occur in such regions. Major meteorological factors that determine the concentrations of air pollutants are the wind field and the turbulent diffusion. In this study, we investigate the characteristics of the sea breeze and their influence on aerosol particles, ozone and CO2 concentrations around Ahtopol, a small town located at the southern Bulgarian Black Sea coast. Field experiment, performed from 24 to 29 August 2017, comprised measurements of meteorological parameters, aerosol particle number with 6-channel Aerosol Particle counters, atmospheric optical depth (AOD) and total ozone content (TOC) with Microtops II solar photometer and ozonometer, correspondingly. The statistical analysis revealed that onset and cessation periods of the sea breeze were from 9:00 to 10:00 and from 19:00 to 21:00 LST, respectively. The average maximum strength of the sea breeze was 3-4 ms−1. Studying the variation of aerosol particles and CO2, it is concluded that the sea breeze onset is associate with decrease of small particles number, and decrease of CO2 concentration.

1.
R.
Cerdeira
,
C.
Louro
,
L.
Coelho
,
J.
Garcia
,
C.
Gouveia
,
T.
Ferreira
and
N.
Batista
,
Proceedings of the 5th WSEAS International Conference on Environment, Ecosystems and Development
,
Venice, Italy
, November 20-22,
2006
,
355
359
.
2.
R.
Koelemeijer
,
C.
Homan
,
J.
Matthijsen
,
Atmos. Environ.
40
,
5304
5315
(
2006
).
3.
K.
Abhijith
,
P.
Kumar
,
J.
Gallagher
,
A.
McNabola
,
R.
Baldauf
,
F.
Pilla
,
B.
Broderick
,
S.
Di Sabatino
and
B.
Pulvirenti
,
Atmospheric Environment
162
,
71
86
(
2017
).
4.
F.
Chen
,
S.
Miao
,
M.
Tewari
,
J.
Bao
and
H.
Kusaka
,
J. Geophys. Res.
116
(
2011
).
5.
M.
Vian
,
C.
Pérez
,
X.
Querol
,
A.
Alastuey
,
S.
Nickovic
,
J.M.
Baldasano
,
Atmos. Environ.
39
5343
5361
(
2005
).
6.
K.
Bouchlaghem
,
F.
Mansour
and
S.
Elouragini
,
Atmos. Res.
86
,
162
172
(
2007
).
7.
D.
Papanastasiou
and
D.
Melas
.
Int. J. Climatol.
29
,
305
315
(
2009
).
8.
P.
Savov
,
N. Kolev, Ts. Evgenieva, M. Vatzkitcheva and V. Danchovski
,
Compt. rend. Acad. bulg. Sci.
69
(
1
)
19
24
(
2016
).
9.
N.
Kolev
,
P. Savov, Ts. Evgenieva, N. Miloshev, D. Petkov and E. Donev
,
Compt. rend. Acad. bulg. Sci.
69
(
4
)
421
430
(
2016
).
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