Aude Lemonsu, A. Leroux, N. Benbouta,
S. Bélair, J. Mailhot
Input data for urban modeling
QH Traffic
QE Traffic
QH Industry
QE Industry
Urban canopy characteristics Vegetation/built fractions Material properties Geometric parameters
▫ Building height
▫ Roughness length
▫ Aspect ratio of street-canyons
Urban LULC classification
Heat and moisture anthropogenic forcing
Traffic (inside street-canyons) Industrial activities (above canopy)
Anthropogenic flux database
Urban LULC
Building height estimation
15-m elevation databaseSRTM-DEM minus
NED/CDED1
Elevation for built-up pixels
Surface characterization15-m unsupervised
classificationASTER/Landsat-7
40 built and vegetated simple elements regrouped in 11 simple
elements/criteria1.Excluded covers
2.Water3.Trees4.Low
vegetation5.Grass6.Soil and rocks
1.Roof2.Concrete3.Asphalt4.Veg/built 15.Veg/built 2
60-m LULC classification
1.Excluded2.Water3.Soils4.Crops5.Short grass6.Mixed forest7.Mixed shrubs1. High buildings2. Mid-high buildings3. Low buildings4. Very low buildings5. Industrial areas6. Sparse buildings7. Roads and parkings8. Road mix9. Dense residential10.Mid-density
residential11.Low-density
residential12.Mix nature and built
Classification criteria
selection60-m aggregation of classification criteria
1.Excluded covers2.Water3.Trees 4.Low
vegetation5.Grass6.Soil and rocks7.Roof8.Concrete9.Asphalt10.Veg/built 111.Veg/built 2
12.Built
13.Built214.Height
Decision tree
N
ExcludedWaterTreesLow vegeGrassSoil & rocks
RoofConcreteAsphaltVeg/built 1Veg/built 2
ASTER unsupervised classification Building height estimation
Urban LULC
Building height estimation
15-m elevation databaseSRTM-DEM minus
NED/CDED1
Elevation for built-up pixels
Surface characterization15-m unsupervised
classificationASTER/Landsat-7
40 built and vegetated simple elements regrouped in 11 simple
elements/criteria1.Excluded covers
2.Water3.Trees4.Low
vegetation5.Grass6.Soil and rocks
1.Roof2.Concrete3.Asphalt4.Veg/built 15.Veg/built 2
60-m LULC classification
1.Excluded2.Water3.Soils4.Crops5.Short grass6.Mixed forest7.Mixed shrubs1. High buildings2. Mid-high buildings3. Low buildings4. Very low buildings5. Industrial areas6. Sparse buildings7. Roads and parkings8. Road mix9. Dense residential10.Mid-density
residential11.Low-density
residential12.Mix nature and built
Classification criteria
selection60-m aggregation of classification criteria
1.Excluded covers2.Water3.Trees 4.Low
vegetation5.Grass6.Soil and rocks7.Roof8.Concrete9.Asphalt10.Veg/built 111.Veg/built 2
12.Built
13.Built214.Height
Decision tree
High buildingsMid-high buildingsLow buildingsVery low buildingsSparse buildingsIndustrial areas
Roads and parkingsRoad mixDense residentialMid-density residentialLow-density residentialMix of nature and built
SoilsCropsShort grassMixed forestMixed shrubsWater
Excluded
Oklahoma City 60-m resolution classification
N
Anthropogenic heat database
IndustryState/Month or
year
TrafficCity/Day
Anthropogenicheat sourcesData related with heat
sources
Total daily energy
Spatialdisaggregating
Temporal disaggregating
Daily temporal profile of energy
consumption
▪ Population density▪ Road network▪ Industry land use
Hourly heat fluxes interpolatedon the model grid
– Electricity consumption– Fuel consumption– Vehicle distance traveled
Anthropogenic heat sources computed for summer
Temporal disaggregating based on Sailor’s works
Spatial disaggregating based on: Population density and road network for traffic sources
Industrial land use for industrial sources
Anthropogenic heat databaseApplication to Oklahoma City
0
2
4
6
8
3 6 9 12 15 18 21 243
4
5
3 6 9 12 15 18 21 24
Electricity consumption(summer)
Vehicular traffic(work day)
Time (LST) Time (LST)
Fract
ion
17:00 LST
DECIDUOUS BROADLEAF TREES
SHORT GRASSAND FORBS
LONG GRASS
CROPS
MIXED WOODFOREST
VEGETATION CLASSES
LAND/SEA MASK
WATER<80%
BUILT>10%
WATER
ROADS>80%
VEGETATION
BUILT2>20%
ELEVATION>20 m
ROADS ANDPARKINGS
ELEVATION>30 m
ELEVATION>10 m
HIGHBUILDINGS
MID-HIGHBUILDINGS
LOWBUILDINGS
VERY LOW BUILDINGS
RESID + MIX>40%
ELEVATION>30 m
HIGHBUILDINGS
ELEVATION>20 m
MID-HIGHBUILDINGS
ELEVATION>10 m
LOWBUILDINGS
BUILT2>20%BUILT>45%
VERY LOWBUILDINGS
ROADBORDERS
BUILT>70%
BUILT>70%
BUILT2>20%
BUILT>40%
ELEV>10 mBUILT2>20%
ELEV>10 mBUILT2>20%
SPARSEBUILDINGS
LOW VEG+GRASS>60%
DENSERESIDENTIAL
MID-DENSITYRESIDENTIAL ELEVATION
>20 m
ROADBORDERS
ELEVATION>30 m
ELEVATION>10 m
HIGHBUILDINGS
MID-HIGHBUILDINGS
LOWBUILDINGS
VERY LOWBUILDINGS
SPARSEBUILDINGS
ROADBORDERS
LOW-DENSITYRESIDENTIAL
BUILT &NATURE MIX
ROOF>20%
Decision tree