In the previous step, we expected that the UHI index would appear stronger in moist conditions due to the greenhouse effect of water vapor and the rate of increase in temperature would be faster. 

Based on this hypothesis, we set the initial value as below conditions and changed the mixing ratio value to default value, 10 percent increase, 20 percent increase, 10 percent decrease and 20 percent decrease, respectively.

​

  Initial value setting

• Land Type : city (1 : Urban and built-up land), rural (2 : Dryland cropland and pasture)

• Radius of city : 25

 

  Changed value

• input.sounding : Based on the ideal input sounding values, we added the changed value of mixing ratio (to +10%, +20%, -10%, -20%)

 

  Run wrf model

 

  Result

• Observe the difference in each result (-20p. -10p, 0 - ideal, +10p, +20p)