air quality assessment rotterdam rijnmond...sef van den elshout environmental problems 1960ies...
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Air quality assessment Rotterdam Rijnmond
Sef van den Elshout
Environmental problems 1960ies
22-2-2017 3
DCMR EPA Rijnmond
Environmental Management Act: licensing
and inspection (core business)
Advice on spatial planning
• Air quality and energy unit, a.o.:
• Air quality assessment (legal
framework) monitoring, modelling
• Communication to the public
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Automatic monitoring 1969 –
‘accident’ oriented
22-2-2017 5 5
‘Sniffing pole’ (SO2)
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AQ network 2016 - exposure
22-2-2017 7
Current monitoring sites
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Monitoring context: national air quality legislation - EU
NO2, PM10/PM2.5
Ozone, benzene, SO2, PAH, heavy metals
BC (BS), UFP (start 2017)
Air quality assessment
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Air quality assessment - 2
Regulatory AQ assessment ‘always’ based on modelling:
Assess limit value compliance / impact of new
developments
Spatial resolution: 10-100 m
Local policy scenario’s, e.g.
LEZ (BC),
Motorway A13 speed limit 80km/h,
…
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Why monitor?
Monitoring to (a.o.):
Calibrate models/modelled backgrounds
Verify emissions (compare models/monitoring)
Credibility “meten is weten”
High accuracy , high cost
Do we always need / still need the accuracy?
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Trends
0
20
40
60
80
100
120
1972 1976 1980 1984 1988 1992 1996 2000 2004 2008 2012 2016
Ind
ex
3 year m.a. relative pollutant concentrations Rijnmond
SO2
Benzene
NO2
Pb
Black Smoke
PM10
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0
10
20
30
40
50
2006 2007 2008 2009 2010 2011 2012 2013 2014 2015
PM10
Jaar gem. 1 Noord, oost2 Oost 3 Zuid-oost4 Zuid-west 5 West6 West, noord-west
Verify specific areas in the port
1
3
2 5
6
4
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Observed and predicted
evolution emission factors
0.0
0.2
0.4
0.6
0.8
1.0
1.2
2010 2012 2014 2016 2018 2020
monitoring
reported EF10-15
EF 15-20
0.0
0.2
0.4
0.6
0.8
1.0
1.2
2010 2012 2014 2016 2018 2020
monitoring
reported EF
EC
NOx
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Resolution and accuracy
0
10
20
30
40
50
60
1990 1993 1996 1999 2002 2005 2008 2011 2014
Conc
entr
atie
in µ
g/m
3
NO2 Urban background
Rijnmond
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DCMR RIVM
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Cheap sensors?
https://samenmetenaanluchtkwaliteit.nl/vuurwerk-2016-2017
22-2-2017 17
Back to the start!?
E-nose (gas sensor) alert network
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Limit values are met (almost everywhere):
Trend is more important than the exact
concentration (?)
so alternative assessment methods (remote
sensing, sensors) can be used
decision making: scale has become less
important
For the public, scale is a major issue
Conclusions
