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bug fix for building height in urban lcz parameter table (#1867)
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Bug fix for building height in LCZ urban parameter table

TYPE: bug fix

KEYWORDS: urban, BEP, BEP_BEM, parameter table, building height

SOURCE: Cenlin He (NCAR), Alberto Martilli (CIEMAT, Spain)

DESCRIPTION OF CHANGES:
Problem:
The BEP and BEP_BEM urban schemes (urban_physics = 2,3) require the building height distribution to be a multiple of 5-m because of the hard-coded dz_u = 5 parameter in BEP and BEP_BEM source code. However, currently the urban parameter table (URBPARM_LCZ.TBL) has a building height distribution as a multiple of 3-m, which will cause model issues.

Solution:
Change the building height distribution in URBPARM_LCZ.TBL to be a multiple of 5-m. In addition to the model code requirement as mentioned above, the justifications of this change also include: (1) the NUDAPT database has building heights as a multiple of 5m. (2) the updated mean building heights in URBPARM_LCZ.TBL aer equal to the middle range values of the urban LCZs from Stewart and Oke (2012): Stewart, I. D., & Oke, T. R. (2012). Local climate zones for urban temperature studies. Bulletin of the American Meteorological Society, 93(12), 1879-1900.

LIST OF MODIFIED FILES:
run/URBPARM_LCZ.TBL

TESTS CONDUCTED:
The regression tests have passed.

The mods fixed the problem.
RELEASE NOTE: This is a bug fix for building height in LCZ urban parameter table.
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cenlinhe committed Jul 5, 2023
1 parent 3d75d94 commit fb4be8f
Showing 1 changed file with 27 additions and 29 deletions.
56 changes: 27 additions & 29 deletions run/URBPARM_LCZ.TBL
Expand Up @@ -543,105 +543,103 @@ BUILDING HEIGHTS: 1

# height Percentage
# [m] [%]
21.0 100.0
40.0 17.
45.0 21.
50.0 24.
55.0 21.
60.0 17.
END BUILDING HEIGHTS

BUILDING HEIGHTS: 2
# (sf_urban_physics=2,3)

# height Percentage
# [m] [%]
9.0 25.0
15.0 45.0
18.0 20.0
21.0 10.0
15.0 50.
20.0 50.
END BUILDING HEIGHTS

BUILDING HEIGHTS: 3
# (sf_urban_physics=2,3)

# height Percentage
# [m] [%]
6.0 55.0
9.0 45.0
5.0 72.
10.0 28.
END BUILDING HEIGHTS

BUILDING HEIGHTS: 4
# (sf_urban_physics=2,3)

# height Percentage
# [m] [%]
24.0 100.0
40.0 17.
45.0 21.
50.0 24.
55.0 21.
60.0 17.
END BUILDING HEIGHTS

BUILDING HEIGHTS: 5
# (sf_urban_physics=2,3)

# height Percentage
# [m] [%]
9.0 10.0
15.0 25.0
21.0 40.0
24.0 25.0
15.0 50.
20.0 50.
END BUILDING HEIGHTS

BUILDING HEIGHTS: 6
# (sf_urban_physics=2,3)

# height Percentage
# [m] [%]
6.0 30.0
9.0 40.0
15.0 30.0
5.0 72.
10.0 28.
END BUILDING HEIGHTS

BUILDING HEIGHTS: 7
# (sf_urban_physics=2,3)

# height Percentage
# [m] [%]
5.0 100.0
9.0 0.0
15.0 0.0
21.0 0.0
24.0 0.0
5.0 100.
END BUILDING HEIGHTS

BUILDING HEIGHTS: 8
# (sf_urban_physics=2,3)

# height Percentage
# [m] [%]
6.0 35.0
9.0 65.0
5.0 72.
10.0 28.
END BUILDING HEIGHTS

BUILDING HEIGHTS: 9
# (sf_urban_physics=2,3)

# height Percentage
# [m] [%]
6.0 75.0
9.0 25.0
5.0 72.
10.0 28.
END BUILDING HEIGHTS

BUILDING HEIGHTS: 10
# (sf_urban_physics=2,3)

# height Percentage
# [m] [%]
3.0 10.0
9.0 60.0
15.0 30.0
5.0 16.
10.0 68.
15.0 16.
END BUILDING HEIGHTS

BUILDING HEIGHTS: 11
# (sf_urban_physics=2,3)

# height Percentage
# [m] [%]
6.0 100.0

5.0 100.0
END BUILDING HEIGHTS


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