The Elements of Water Balance in the Changing Climate in Poland

Table 1

Comparison of modelled and observed temperature for the city of Poznan referring to second-order statistics: sums of squared differences, ratios of variances, and correlation coefficients (corresponding rank in brackets) and the final ranks for the models based on the temperature.

Model	Sum of squared differences; (model − real) in °C	Ratio of variance of the model to observational variance	Correlation	Final rank
C4IRCA	18.61 (4)	1.047 (1)	0.9967 (3)	3
ETHZ	21.46 (5)	1.282 (5)	0.9947 (5)	5
KNMI	10.23 (2)	0.823 (3)	0.9974 (1)	2
METO-HC	16.35 (3)	1.218 (4)	0.9955 (4)	4
MPI-M-REMO	6.48 (1)	0.867 (2)	0.9973 (2)	1