MEASUREMENTS,
Download
1 / 76

MEASUREMENTS, EMISSIONS and DISPERSION of NOx, HC, PM10 - PowerPoint PPT Presentation


  • 75 Views
  • Uploaded on

MEASUREMENTS, EMISSIONS and DISPERSION of NOx, HC, PM10. VÄSTRA GÖTALAND. µg/m. 3. Maximum permitted values. 75. 70. 60. Environmental quiality norm. 50. Checked by measurements. 40. Upper check-level. 30. Checked by. measurements in. combination with model s.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' MEASUREMENTS, EMISSIONS and DISPERSION of NOx, HC, PM10' - warren-guerrero


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

MEASUREMENTS,

EMISSIONS andDISPERSION ofNOx, HC, PM10



µg/m

3

Maximum permitted values

75

70

60

Environmental quiality norm

50

Checked bymeasurements

40

Upper check-level

30

Checked by

measurements in

combination with models

Lower check-level

20

Checked by models

10

0

2001

2002

2003

2004

2005

Year

Exemple for PM10 as daily mean



Measuring sites for pm10
MEASURING SITES for PM10

Gothenburg

Mariestad

Aspvreten

Råö

Borås

Färgelanda



Aspvreten

BALTIC SEA


Meteorological measurements in bor s 1 1 30 6 2003
METEOROLOGICALMEASUREMENTS INBORÅS1/1 –30/6 2003




(all coexistent)

Month mean of


(no precipitation)

Background

thu

wed

thu

thu

fri

sat

sun

mon

tue


(no precipitation)

Background

sat

wed

sun

tue

mon

thu

fri


(no precipitation)

Background

sat

wed

sun

mon

thu

fri

tue


(no precipitation)

Street - Background

sat

mon

fri

sun

wed

thu

tue


(with precipitation)

Street - Background

mon

fri

sat

wed

sun

tue

thu


Gothenburg

Roof; city center

mon

wed

sun

tue

sat

thu

fri


Gothenburg

Roof; city center

wed

fri

sun

sat

mon

thu

tue


Gothenburg

Ratio

Roof; city center

sat

mon

thu

sun

tue

fri

wed










NOx (ton/Year)

VOC (ton/year)

267.7

70.5

421.8

2398.8

928.4

442.4

3964.3

1206.4

707.2

803.4

Particles (ton/year)

41.0

235.5

Agriculture

Forestry

Housholding

302.2

Industry

Other

92.1

72.7




A

Cars are split up by age:

B

C

D

E

F



Traffic intensity on different parts of the roads:

  • Year of calculation:

  • Traffic intensity is a function of year

  • Number of cars of different ages is a function of year


Emissions g km are functions of
Emissions (g/km) are functions of:

  • Type of car

  • Age of car

  • Type of road

  • Speed limit on road


Cold start

Hot soak





ALARM-systemet

  • Leif Enger

  • Enger KM-konsult AB

  • Blixtgatan 9

  • Uppsala

  • Sweden

  • leif @ enger.se


ALARM-system=Advanced Local And Regional Modeling system


The alarm system consist of
The ALARM- system consist of

  • Meteorology model

  • Dispersion model

  • Measurements

  • Menu program

  • Grafics


Meteorology model:The MIUU-modelDeveloped by Leif Enger and several othersat Meteorological Institute Uppsala University


”The MIUU-method” for wind climate modelling

  • Output

  • Wind

  • Temperature

  • Humidity

  • Turbulent energy

MIUU-model

WWEC 2003, November 23-26, Cape Town, South Africa

Hans Bergström, Department of Earth Sciences-Meteorology, Uppsala University

  • Input

  • Air pressure field

  • Topography

  • Surface roughness

  • Landuse

  • Ground temperature

  • Cloudiness

  • Longitude and latitude

  • Time of year

  • Initial profiles of temperature and hunidity


Metorological databaseTheMIUU-model simulates wind, temperature and turbulence over a day for a great number of cases:

  • Three geostrophic wind speeds

  • 36 different wind directions

  • 4 different ”seasons”

Calculated wind, temperature and turbulence fields are saved once per hour during the day.

This provides us with about 10 000 different meteorological cases.


Database creation, phase 1:

Wind, temperature and turbulence fields over Sweden and surrounding seas are simulated with the MIUU-model with 5 km resolution. This includes surrounding areas that is supposed to influence the wind climate over Sweden.


m/s

Database creation :

Example of wind fields from simulation with the MIUU-model with 5 km resolution.

A case in april with NW geostrophic wind of 15 m/s.

The north and south areas fit very well in the overlapping parts, which give us the wind field for the whole Scandinavia.

In this case high winds in e.g. the mountains, north and south Baltic Sea, as well as over Kattegatt and Skagerack.


Database creation, phase 2:

Wind , temperature and turbulence fields are simulated with the MIUU-model with 1 km resolution. Sweden is divided into 15 areas. Boundary conditions are taken from the model results from the 5 km resolution simulations.



Exemple of dispersion from area sources model simulationsMovie: Dispersion of NOx during 4 days. One hour between each picture.


(ships) model simulations


Ships model simulations


Ships model simulations


Dispersion from all sources
DISPERSION model simulationsFROM ALL SOURCES


ships model simulations

Line


(Line + Area + ships) model simulations


M g m 3
( model simulationsmg/m3)


ad