validation of urbanstream using ju2003

Validation of urbanSTREAM Using JU2003

CRTI-02-0093RD Project Review Meeting

Canadian Meteorological Centre

August 22-23, 2006

Component 5: Model Validation

urbanSTREAM

urbanGEM/LAM

Component 2

Component 12-way interaction ?

urbanLSurbanEU

Component 4

Component 5 (whole system validation)

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Component 3

CRTI

Joint Urban 2003

• Major urban study with following components:– Characterization of urban boundary layer– Measurement of flow within and

downwind of tall building core– Investigation of flows in street canyon

including effects of traffic on turbulence– Measurement of surface energy balance

in urban area– Dispersion of tracer into, out of, and

within buildings (indoor dispersion)– Dispersion of tracer throughout the tall

building core and to four km downwind from release

Joint Urban 2003 – Atmospheric DispersionStudy in Oklahoma City

Present Focus: JU2003 (OK City)Validation (What is the Ground Truth?)

3-D rendering from ARCVIEW shape file

satellite photograph

Portion of OK City CBD

Source #1

Wind from SSW, Source #1

(0,0)(0,3)

(5.6,0) (5.6,3)

y

x

(1.5537, 3.2506)

Source location

Flow domain:

Local coordinate system

N

Origin: UTM coordinates

Zone: 14UTM easting: 633683.314 mUTM northing: 3923940.987 m

Modeled and Predicted Mean Winds

ANL Minisodar (Botanical Gardens)

ANL Minisodar

FRD Sodar

PNNL Sodar used to inflow conditions for

urbanSTREAM

Source and Detectors

Concentration Field C

N

Source Location: South side of Park Avenue 35.46871667 ° N, 97.51556667 ° W

Dual Concentration Field C*

*logC

Detector # 515(1-km sampling arc)

[C] = pptv[Q] = kg s-1

log C*

),( * SCC

)( sxxQS

62 63 64 65 660

1000

2000

3000

4000

5000

6000

7000

Detector ID

Mea

n C

once

ntra

tion

(pp

tv)

McGee Avenue

Measured and Predicted Concentration

Source

Experimental

urbanEU

urbanAEU

urbanLS52 53 54 55 56

0

2000

4000

6000

8000

10000

12000

14000

16000

Detector ID

Mea

n C

once

ntra

tion

(pp

tv)

Kerr Avenue

83 84 860

500

1000

1500

2000

2500

3000

Detector ID

Mea

n C

once

ntra

tion

(pp

tv)

5th Street

Measured and Predicted Concentration

Source

Experimental

urbanEU

urbanAEU

urbanLS72 73 74 76

0

500

1000

1500

2000

2500

3000

3500

Detector ID

Mea

n C

once

ntra

tion

(pp

tv)

4th Street

512 513 514 515 516 5170

200

400

600

800

1000

1200

1400

Detector ID

Mea

n C

once

ntra

tion

(pp

tv)

1-km Sampling Arc

Measured and Predicted Concentration

Source

Experimental

urbanEU

urbanAEU

urbanLS94 96

0

500

1000

1500

2000

2500

Detector ID

Mea

n C

once

ntra

tion

(pp

tv)

6th Street

Measured and Predicted Concentration

Source

Experimental

urbanEU

0 50 100 150 200

10

17

24

34

48

62

75

Det

ecto

r he

ight

(m

)

Mean Concentration (pptv)

WSU (LLNL Sonic Crane Tower)

Vertical profile of mean concentration