Chemistry Reference
In-Depth Information
Table 10 Pollution levels in selected areas in 2009 (
source
: AirBase)
NO
2
NO
x
PM
10
Annual mean
(
Annual mean
(
Annual mean
(
g/m
3
)
g/m
3
)
g/m
3
)
MS
City/area
# of exceedances
m
m
m
BG
Sofia
5-58
7-171
20-65
1-161
FR
Paris
27-96
Unavailable
25-59
16-222
EL
Athens
11-91
19-279
26-49
17-122
60-174
a
DE
Stuttgart
34-112
20-45
15-112
IT
Milan
37-80
100-171
39-47
83-116
54-61
a
PL
137-168
SK Koˇice Unavailable Unavailable 51 168
PT Lisbon 25-70 32-153 26-40 15-94
UK London 22-107 34-303 19-35 5-36
DE Berlin 13-63 16-149 21-39 7-73
a
No data for station showing the highest values in previous years (highest PM
10
annual mean level
in Krak´w in 2008: 81
Krak´w
26-70
Unavailable
g/m
3
, highest NO
x
level in Stuttgart in 2008: 343
g/m
3
)
m
m
250
70
60
200
50
150
40
30
100
20
50
10
0
0
120
300
100
250
80
200
60
150
40
100
20
50
0
0
Fig. 1 Minimum and maximum: number of exceedances of the PM
10
daily mean limit value,
PM
10
NO
2
and NO
x
annual mean values for 2009 (
source
: AirBase)
where data for at least 4 years are available. Figure
2
shows the mean annual change
for these cities. In Sofia and Krak´w a non-significant increase of more than
3
g/m
3
per year has been observed. For the station in Sofia data between 2003
and 2008 are available, and for the station in Krak´w between 1998 and 2008. In
m
