cost 715 meteorology applied to urban air pollution problems september 98-september 2003 problem...
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COST 715 Meteorology Applied to UrbanAir Pollution ProblemsSeptember 98-September 2003
•Problem•Issues covered•Successes•Conclusions
Traditional approachto ABLnon-dimensionalprofiles
i ii iii
wE
Dynamics
Thermodynamics
In-street pollution
unstable
day
neutral stable
night
stability
sky conditions
temperatureprofile
boundarylayerheight
turbulenceintensity
radiationbalance
heig
ht
temperature
Parameters
uC wind in urban canopyLC canopy length scalewE exchange velocityuref reference windhref blending heighturural->uurban transfer functionhurban height of urban boundary layerz0 roughness length based on geometry
Relationship between incremental NOx and incremental NO2 0 10 20 30 40
0
6
12
18
24
30
RuralElsewhereCentral LondonPS Method 1PS Method 2Photostationary
Power station empirical relationships
Incremental NOx ug/m3
Incr
emen
tal
NO
2 ug
/m3
0
0 50 100 150 2000
6
12
18
24
30
Laxen(2002) CL roadsideTG(02) CL roadsideRuralElsewhereCentral LondonPhotostationary
Roadside increments
Incremental NOx ug/m3
Incr
emen
tal
NO
2 ug
/m3
0
Relationship between incremental NOx concentrations in road side air and incremental NO2 concentration
BUBBLE experiment Basel
Recommendations on deriving meteorological parameters for application to urban air pollution estimates
Mixing height for urban background concentrations, atmospheric stability for dispersion
Street and urban background wind, for dispersion within above streets
Urban episodes, availability of tools, potential developments, uncertainty
Inventory of urban meteorological sites, use of data, recommendations for siting, local meteorological data and corrections, choice site location.
Working Group 1Urban dynamics
Experimental data
Test geometric and othermethods
Working Group 4Routine dispersion calculations
Corrections to urban profiles
Routine measurements at urbanmeteorological sites
Working Group 2urban thermodynamics
Experimental data
Methods for surface heat fluxand mixing layer depth
Grid square averaged
Roughness lengthSurface heat flux
Boundaryconditions for
Meso-scaleModels
Working Group 3
Prediction of urban air qualityepisodes
Kukkonen, J. (editor), 2001, COST action 715, Meteorology applied to Urban Air Pollution Problems, Working Group 3, Meteorology during peak pollution episodes, Status Report, Luxembourg Office for Official Publications of the European Communities, EUR 19448, European Commission, Brussels, 73 pages
Middleton D R, 2002, Meteorological challenges in urban air pollution, Clean Air, 32, 14-19
Piringer M and Kukkonen J (editors), 2002, COST action 715, Meteorology applied to Urban Air Pollution Problems, Mixing height, inversions and episodes in urban areas (Toulouse, 3-4 October 2001), Luxembourg Office for Official Publications of the European Communities, to be published, available at http:cost.fmi.fi/index.html Rotach M. (editor) 2001, COST action 715, Meteorology applied to Urban Air Pollution Problems, Workshop on Urban Boundary Layer Parameterisations (Zurich, 24-5 May 2001) Luxembourg Office for Official Publications of the European Communities, to be published
Schatzmann M, Brechler J and Fisher B (editors), 2001, Preparation of meteorological input data for urban site studies, COST European co-operation in the field of scientific and technical research, Luxembourg Office for Official Publications of the European Communities, EUR 19446
Some publications
COST 715 Achievements
Raised issue of urban meteorology
Inventory of urban met sites
New data sets
New theories
International involvement
New projects FUMAPEX