Investment evaluation index for project investment evalua-tion is gotten by a large amount of transmission equipment project statistics,evaluation approaches are given. Among them,universal e-valuation index is for pre-feasibility study,unit evaluation index is for project feasibility study.
Using objective criterions of factors including the atmosphere general circulation, SST, ENSO, meteorological parameters, astronomical background and etc. , a similar index is defined. Some similar samples in past periods are found out by the index from past records and dynamical climatic prediction products.
The weaknesses of established model selection procedures based on hypothesis testing and similar criteria are discussed and an alternative based on synthetic (composite) estimation is proposed.