A Convection Nowcasting Method Based on Machine Learning

Table 3

Results of the comprehensive assessment.

Forecast method	Valid period of forecast (min)	POD	CSI	CC	Forecast centroid deviation (km)	RMSE (dBZ)
TREC	60	0.291	0.254	0.489	18.1	21.5
Optical flow method		0.482	0.428	0.728	12.8	15.3
Machine learning method		0.544	0.465	0.821	11.3	12.9
TREC	120	0.182	0.114	0.320	27.5	28.4
Optical flow method		0.216	0.195	0.466	17.8	20.3
Machine learning method		0.383	0.287	0.513	17.1	15.8