II 5'2GraffJoint Workshop of TFIAM and TFMM on Cost effective control of urban air pollution, IIASA,

1
PM2.5 ambient air concentration in German rural
and urban areas derived from measurement and
modelling

• Arno Graff, Umweltbundesamt, Dessau
• R. Lacombe und W. Bräuniger, UBA-II 5.2

2
The ProblemUIs from 1st approximation

• The urban increment of PM2.5 (in µg/m3, annual
  mean concentrations) calculated with the
  functional relationship for the year 2000. These
  urban increments are additional to the
  concentrations computed by the regional scale
  calculations of the EMEP model using the 50x50
  km2 spatial resolution.

3
Method to derive the urban increment for PM2.5

• PM10 assessment for rural areas and various
  agglomerations in Germany
• Separation of stations in 3 categories - (rural,
  urban, traffic)
• Averaging over all stations of the same type for
  every region andover the years 2000 2005
• Use of information from modelling to derive PM2.5
  concentrations for the various regions
• Estimation of urban increment for PM2.5

4
source analysis ? where does it come from
how much ?
Example phenomenology of the PM-pollution around
Berlin
PM µg/m³
5
Berlin/Brandenburg area
6
Rhine Ruhr area
7
PM10 annual mean concentrationby region und
station type
region
station type
8
Urban signalsfor PM10 in Germany
? Estimation of PM2.5 signal in Germany
9
PM2.5 proportion in PM10 from RCG
70-75
75-80
70-75
70-75
65-70
75-80
75-80
80-85
70-75
10
PM10 conversion to PM2.5from modelling with RCG
region
station type
11
Urban signalsfor PM2.5 in Germany
? Estimation of PM2.5 urban increment
12
PM2.5 in Germanyfrom EMEP country reports
Met 2000 E 2002 - 1/2004
Met 2003 E 2003 - 1/2005
B 12-14
B 10-12
HH 14-16
HH 12-14
N 10-12
N 12-14
D 16-18
D 18-20
M 10-12
M 10-12
F 12-14
F 10-12
13
PM2.5 annual meanby region and station type
region
station type
14
PM2.5 Urban Increment for Berlin
15
Summary

• The PM10 difference between urban and rural
  regions in Germany is 9 µg/m³ on the average
• The PM2.5 difference between urban and rural
  regions in Germany is estimated to 6 µg/m³ on the
  average
• The urban increment is estimated to 4 µg/m³ (up
  to 9 µg/m³!) in 7 of 8 German regions
• For one EMEP grid cell in Rhine/Ruhr, the urban
  increment is approximately zero this might be
  because emissions of the agglomeration are
  caught in one EMEP grid cell totally.
• Though there is a lot of information from
  measurements -anyway, I my heart keeps beating
  for models ?

16
PM2.5 from Modelling
17
(No Transcript)
18
PM10 annual mean concentrations from RCG for 2002
19
PM2.5 annual mean concentrations from ME/MO using
OI for 2002
20-22
14-16
22-24
18-20
16-18
18-20
20
Hamburg
21
Rhine Main area
22
Nürnberg
23
Stuttgart
24
Munich
25
Halle/Leipzig
26
Berlin Base run urban increment PM10 Nest 1, 2
and 3
Urban core increment Nest 1 2-6 Nest 2
2-6 Nest 3 4- 10 µg/m3