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lm = 20 (Urban 40%)
High T (Summer)
-
Surface Temperature
- Difference Max: 2.78 K
- Diff Max occur time:
6:00 PM
-
U Wind
- Collision time:
7:00PM
- Average Velocity change:
0.029 m/s (Before Collision)
> 0.120 m/s (After Collision)
Defualt
-
Surface Temperature
- Difference Max: 1.73 K
- Diff Max occur time:
6:30 PM
-
U Wind
- Collision time:
11:00PM
- Average Velocity change:
0.259 m/s (Before Collision)
> 0.208 m/s (After Collision)
-
Surface Temperature
- Difference Max: 1.82 K
- Diff Max occur time:
8:30 PM, 10:00 PM
Temperature
-
U Wind
- Collision time:
8:30PM
- Average Velocity change:
0.427 m/s (Before Collision)
> 0.080 m/s (After Collision)
Low T (Winter)
[Surface T deviation_(local time minimum) ]
- When the atmospheric temperature is higher (summer simulation), the maximum deviation value and the overall
the deviation is greater.
=> The atmosphere’s temperature intensifies the urban heat island effect.
- When the atmospheric temperature is high, the time when the maximum deviation value appears is faster.
[Uwind]
- As temperature increases, the transition time point from convergence to divergence in the center is delayed.
- The average speed of convergence and divergence calculated on one side of urban decreases.
※ Low temperature case, representing the winter, doesn’t show any relationship with others.
2023-2 Numerical Weather Prediction
Team 4
Ideal Urban Heat Island Simulation
- Analysis of relationship between heat dome intensity and the degree of urbanization
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