Research Article

Sensitivity of Dynamical Downscaling Seasonal Precipitation Forecasts to Convection and Land Surface Parameterization in a High-Resolution Regional Climate Model

Table 3

Anomaly correlation coefficients of seasonal precipitation forecasts from 1999 to 2010.

199920002001200220032004200520062007200820092010

SpringCFS−0.1840.7730.681−0.76−0.7030.6990.6690.53−0.1250.06−0.587−0.443
K-N−0.256−0.293x0.13x−0.242−0.2720.016x0.446−0.2790.0520.21−0.509−0.213
K-S−0.405−0.132x0.179x−0.152−0.3160.211x0.480.09−0.0580.17−0.492−0.058
B-N−0.109−0.309x0.291x−0.307−0.1620.332x0.4970.10.1450.163−0.6970.129
B-S−0.178−0.135x0.162x−0.191−0.2750.346x0.3660.1560.0870.166−0.4230.281
G-N−0.15−0.374x0.094x−0.105−0.1160.186x0.351−0.2170.0860.142−0.5290
G-S−0.263−0.312x0.09x−0.155−0.3680.29x0.333−0.069−0.0550.186−0.5010.382
N-N−0.173−0.023x−0.052x−0.15−0.2690.239x0.246−0.1210.336−0.032−0.288−0.188
N-S−0.3040.25x0.046x−0.268−0.4710.465x0.3450.2260.2620.036−0.307−0.222

SummerCFS0.886−0.2370.721−0.1830.499−0.305−0.2030.494−0.272−0.1120.403−0.191
K-N0.403x−0.1170.361x0.0980.5860.1110.2720.3710.3180.5790.116−0.03
K-S0.262x−0.1240.16x0.1990.5870.240.3950.3640.3660.6880.228−0.036
B-N0.359x−0.2780.4x−0.0410.3260.155−0.1070.259−0.0580.411−0.03−0.151
B-S0.465x−0.2080.412x−0.1920.4870.1−0.2660.34−0.2630.2630.377−0.219
G-N0.418x−0.2670.223x0.1760.5310.1290.110.4180.3120.4410.5220.072
G-S0.382x−0.1660.389x0.1230.5190.2240.250.4760.3030.3710.5880.105
N-N0.388x0.0560.443−0.050.4910.1320.250.4510.2830.566−0.030.075
N-S0.374x−0.030.4710.0090.4720.1040.3530.4180.1940.561−0.017−0.067

AutumnCFS−0.052−0.3160.2750.1840.113−0.032−0.4250.2120.390.168−0.1990.087
K-N−0.57−0.4160.359−0.2110.4160.7440.132−0.1460.0170.331−0.3−0.321
K-S−0.533−0.4510.381−0.1760.4960.7340.323−0.09100.327−0.366−0.368
B-N−0.419−0.3840.381−0.2380.4070.6920.244−0.1550.1210.296−0.478−0.369
B-S−0.54−0.4310.45−0.2550.4670.770.351−0.039−0.0460.297−0.488−0.2
G-N−0.595−0.330.397−0.0040.3910.7230.206−0.1290.1360.216−0.44−0.2
G-S−0.474−0.3940.445−0.0960.460.6730.31−0.0410.0490.255−0.44−0.212
N-N−0.572−0.4010.4020.0450.4250.6990.119−0.2840.2060.394−0.278−0.227
N-S−0.464−0.4230.3820.0080.4840.5050.244−0.2480.0750.387−0.271−0.219

WinterCFS0.8840.78−0.669−0.448−0.2110.142−0.340.177−0.5890.3940.5650.806
K-N0.554x0.702−0.548−0.405−0.1190.059−0.2670.252−0.5220.0880.4410.714
K-S0.544x0.688−0.4−0.408−0.1380.152−0.3150.234−0.5240.1290.3360.653
B-N0.459x0.677−0.572−0.434−0.0730.069−0.1660.225−0.5240.0550.490.716
B-S0.485x0.672−0.424−0.438−0.1110.148−0.1930.238−0.5260.1180.360.655
G-N0.435x0.66−0.579−0.405−0.0970.067−0.1660.233−0.4710.0150.4940.686
G-S0.481x0.643−0.44−0.422−0.1260.138−0.2090.248−0.4670.0720.360.623
N-N0.456x0.709−0.57−0.407−0.0940.073−0.2560.229−0.5280.0410.4830.735
N-S0.471x0.7−0.438−0.42−0.1190.138−0.2650.226−0.5190.0940.3850.668

Statistically significant correlations at the 95% level are in bold shading. For WRF seasonal forecasts, an asterisk indicates that the result is statistically significant and better than the CFS reforecasts; bold indicates that the WRF seasonal forecasts are worse than the CFS reforecasts and statistical significance is retained; x indicates that the WRF seasonal forecasts are worse than the CFS reforecasts and statistical significance is lost.