Research Article

Numerical Evaluation of the Impact of Urbanization on Summertime Precipitation in Osaka, Japan

Table 1

Statistical comparisons between observed and simulated (URBAN) hourly meteorological variables at Osaka meteorological observatory in August from 2006 to 2010.

20062007200820092010

TemperatureMean obs. (°C)29.8 29.8 28.4 28.0 30.5
Mean sim. (°C)30.6 30.2 29.5 29.0 30.8
0.91 0.91 0.91 0.89 0.93
MBE (°C)0.8 0.3 1.1 1.0 0.3
MAE (°C)1.1 0.8 1.3 1.3 0.7
IA0.93 0.94 0.92 0.91 0.96

HumidityMean obs. (g kg−1)16.6 16.6 15.9 15.4 17.2
Mean sim. (g kg−1)15.9 16.4 15.9 15.1 17.2
0.69 0.67 0.74 0.86 0.72
MBE (g kg−1)−0.6 −0.2 0.0 −0.3 0.0
MAE (g kg−1)1.3 1.1 1.1 1.2 0.9
IA0.79 0.80 0.86 0.92 0.84

Wind speedMean obs. (m s−1)2.7 2.6 2.7 2.3 2.5
Mean sim. (m s−1)2.7 2.8 3.1 2.9 2.7
0.66 0.72 0.60 0.60 0.72
MBE (m s−1)0.0 0.2 0.3 0.6 0.2
RMSE (m s−1)1.3 1.2 1.4 1.3 1.0
IA0.81 0.84 0.76 0.73 0.84

Note: , MBE, MAE, RMSE, and IA denote Pearson’s correlation coefficient, the mean bias error, the mean absolute error, the root mean square error, and the index of agreement, respectively.