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UFIPOLNET
Street detailed calculation of the air quality in Saxony
Landesamt für Umwelt und Geologie

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Referat: Luftqualität
7. November 2007
Landesamt für Umwelt und Geologie
Autor: Uwe Wolf
Folie 2
Introduction: The requirement of a street detailed calculation of
the air quality
The council directive 1996/62/EG, which is effective in Germany since 2002,
requires air quality regulations if the limit values are exceeded.
In Saxony the limit values for PM
10
and partially NO
2
were exceeded in the
cities of Leipzig, Dresden, Chemnitz, Görlitz and Plauen.
Traffic is a main emitter of those substances.
The is a large variability of air pollution within the urban area. The main
factors are traffic density, frontage development and the distribution of other
emitters.
The two major purposes of street detailed calculations are:
1.
Calculation of the present air quality within the urban area to determine
limit violations for areas where no measurements are taken.
2.
Evaluation of the success of air quality regulations through calculations
of case scenarios.

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Referat: Luftqualität
7. November 2007
Landesamt für Umwelt und Geologie
Autor: Uwe Wolf
Folie 3
Schematic flow of street detailed calculation of air quality
Input
Program
modul
Calculation
method
Result
Measurements
Elevation Model
Landuse
Basic modul
Interpolation
Background
2,5 x 2,5 km
grid

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Referat: Luftqualität
7. November 2007
Landesamt für Umwelt und Geologie
Autor: Uwe Wolf
Folie 4
Schematic Sketch of the Radial
Interpolation
Results: Annual Ozone
concentrations Summer 2002 in
Saxony
© Ingenieurbüro Lohmeyer GmbH & Co. KG

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Referat: Luftqualität
7. November 2007
Landesamt für Umwelt und Geologie
Autor: Uwe Wolf
Folie 5
Schematic flow of street detailed calculation of air quality
Input
Program
modul
Calculation
method
Result
Measurements
Elevation Model
Landuse
Basic modul
Interpolation
Background
2,5 x 2,5 km
grid

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Referat: Luftqualität
7. November 2007
Landesamt für Umwelt und Geologie
Autor: Uwe Wolf
Folie 6
Schematic flow of street detailed calculation of air quality
Input
Program
modul
Calculation
method
Result
Measurements
Elevation Model
Landuse
Basic modul
Interpolation
Background
2,5 x 2,5 km
grid
Meteorology
Statistic of diffusion classes
Emission data 1x1km from
saxonian emission register
EURAD data for east and
south saxony
Extension modul
Lagrange diffusion model
LASAT
Additional area load and
total area load
2,5 x 2,5 km grid

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Referat: Luftqualität
7. November 2007
Landesamt für Umwelt und Geologie
Autor: Uwe Wolf
Folie 7
Emissions Inventory
Wind
Elevation model Saxony
Annual mean
PM
10
-Concentrations
LASAT
IMMISSION Measurements
© Ingenieurbüro Lohmeyer GmbH & Co. KG

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Referat: Luftqualität
7. November 2007
Landesamt für Umwelt und Geologie
Autor: Uwe Wolf
Folie 8
Schematic flow of street detailed calculation of air quality
Input
Program
modul
Calculation
method
Result
Measurements
Elevation Model
Landuse
Basic modul
Interpolation
Background
2,5 x 2,5 km
grid
Meteorology
Statistic of diffusion classes
Emission data 1x1km from
saxonian emission register
EURAD data for east and
south saxony
Extension modul
Lagrange diffusion model
LASAT
Additional area load and
total area load
2,5 x 2,5 km grid

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Referat: Luftqualität
7. November 2007
Landesamt für Umwelt und Geologie
Autor: Uwe Wolf
Folie 9
Schematic flow of street detailed calculation of air quality
Input
Program
modul
Calculation
method
Result
Measurements
Elevation Model
Landuse
Basic modul
Interpolation
Background
2,5 x 2,5 km
grid
Meteorology
Statistic of diffusion classes
Emission data 1x1km from
saxonian emission register
EURAD data for east and
south saxony
Extension modul
Lagrange diffusion model
LASAT
Statistic of
diffusion classes
for the city
Fine granularity
grid
LASAT
Area load
1 x 1 km grid
Additional area load and
total area load
2,5 x 2,5 km grid

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Referat: Luftqualität
7. November 2007
Landesamt für Umwelt und Geologie
Autor: Uwe Wolf
Folie 10
Legend
Urban Streets
Rural Streets
LASAT Areas
Saxony
Leipzig
Dresden
Chemnitz
Zwickau
Plauen
Borna
Freiberg
Görlitz
© Ingenieurbüro Lohmeyer GmbH & Co. KG

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Referat: Luftqualität
7. November 2007
Landesamt für Umwelt und Geologie
Autor: Uwe Wolf
Folie 11
Schematic flow of street detailed calculation of air quality
Input
Program
modul
Calculation
method
Result
Measurements
Elevation Model
Landuse
Basic modul
Interpolation
Background
2,5 x 2,5 km
grid
Meteorology
Statistic of diffusion classes
Emission data 1x1km from
saxonian emission register
EURAD data for east and
south saxony
Extension modul
Lagrange diffusion model
LASAT
Statistic of
diffusion classes
for the city
Fine granularity
grid
LASAT
Area load
1 x 1 km grid
Additional area load and
total area load
2,5 x 2,5 km grid

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Referat: Luftqualität
7. November 2007
Landesamt für Umwelt und Geologie
Autor: Uwe Wolf
Folie 12
Schematic flow of street detailed calculation of air quality
Input
Program
modul
Calculation
method
Result
Measurements
Elevation Model
Landuse
Basic modul
Interpolation
Background
2,5 x 2,5 km
grid
Meteorology
Statistic of diffusion classes
Emission data 1x1km from
saxonian emission register
EURAD data for east and
south saxony
Extension modul
Lagrange diffusion model
LASAT
Statistic of
diffusion classes
for the city
Fine granularity
grid
LASAT
Area immissions
1 x 1 km grid
Traffic density
Frontage
development
Screened streets
Gaussian diffusion
model
PROKAS
PROKAS B
Additional load and
total load in the main
streets
Additional area load and
total area load
2,5 x 2,5 km grid

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Referat: Luftqualität
7. November 2007
Landesamt für Umwelt und Geologie
Autor: Uwe Wolf
Folie 13
Screening of the street sections
Area load
1 x 1 km grid
Calculation of the
road network load of
the city
PROKAS
Calculations of
additional load and
total load
PROKAS B
initial level of
pollution
1 x 1 km grid
Frontage
development
Traffic emissions calculated from
9 car classes
Traffic density km/class
Driving patterns
Statistic of diffusion classes

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Referat: Luftqualität
7. November 2007
Landesamt für Umwelt und Geologie
Autor: Uwe Wolf
Folie 14

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Referat: Luftqualität
7. November 2007
Landesamt für Umwelt und Geologie
Autor: Uwe Wolf
Folie 15
Screening of the street sections
Area load
1 x 1 km grid
Calculation of the
road network load of
the city
PROKAS
Calculations of
additional load and
total load
PROKAS B
initial level of
pollution
1 x 1 km grid
Frontage
development
Traffic emissions calculated from
9 car classes
Traffic density km/class
Driving patterns
Statistic of diffusion classes

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Referat: Luftqualität
7. November 2007
Landesamt für Umwelt und Geologie
Autor: Uwe Wolf
Folie 16
Sources of a calculated immission value
background
Interpolation

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Referat: Luftqualität
7. November 2007
Landesamt für Umwelt und Geologie
Autor: Uwe Wolf
Folie 17
Sources of a calculated immission value
background
Area loading from
local and regional
emitters
LASAT
Interpolation

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Referat: Luftqualität
7. November 2007
Landesamt für Umwelt und Geologie
Autor: Uwe Wolf
Folie 18
Sources of a calculated immission value
background
Area loading from
local and regional
emitters
Other emitters
road network load
from traffic
LASAT
Interpolation
PROKAS

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Referat: Luftqualität
7. November 2007
Landesamt für Umwelt und Geologie
Autor: Uwe Wolf
Folie 19
Sources of a calculated immission value
background
Area loading from
local and regional
emitters
Additional loading in
the street
Other emitters
road network load
from traffic
PROKAS B
LASAT
Interpolation
PROKAS

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Referat: Luftqualität
7. November 2007
Landesamt für Umwelt und Geologie
Autor: Uwe Wolf
Folie 20
Modeled anual mean values of PM
10
(Mean 2001-2005)

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Referat: Luftqualität
7. November 2007
Landesamt für Umwelt und Geologie
Autor: Uwe Wolf
Folie 21
Modeled anual mean values of PM
10
– additional load for local traffic (mean 2001-2005)

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Referat: Luftqualität
7. November 2007
Landesamt für Umwelt und Geologie
Autor: Uwe Wolf
Folie 22
Modeled anual mean values of PM
10
– total load (Mean 2001-2005)

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Referat: Luftqualität
7. November 2007
Landesamt für Umwelt und Geologie
Autor: Uwe Wolf
Folie 23
Comparison Model / Measurement
Dresden -Bergstraße
Dresden – Mitte
Dresden – Nord
Measured
PM
10
33
31
33
NO
2
58
31
47
Calculated
PM
10
31
30
35
NO
2
49
31
49

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Referat: Luftqualität
7. November 2007
Landesamt für Umwelt und Geologie
Autor: Uwe Wolf
Folie 24

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Referat: Luftqualität
7. November 2007
Landesamt für Umwelt und Geologie
Autor: Uwe Wolf
Folie 25
Possible sources of error and limits of this method
Erroneous input data
Not enough background and urban background measurement sites for
better differentiation of the area load
Additional load from other emitters will be calculated using one regional
factor
Road network load is the mean of 100 values per 1 x 1 km area. Thus
overstating the initial level of pollution for high immissions areas and
underrating areas with low immissions.
Fault tolerances of up to 50% for calculated immissions of the different
diffusion models for the annual means.