Abstract:Complex Empirical Orthogonal Function (CEOF) was proposed by Barnett in 1983. It is a useful tool for the analysis on long-rang weather process. Its applications in the field are synthetically introduced and reviewed in this paper.

Abstract:Using data of radiosonde, airplane observation, ground rainfall and the preliminary results of seeding dry-ice by aircraft, a comprehensive study of the winter stratus in Guizhou was made in order to understand its macroscopic and microscopic structures, characters and regional correlativity of its rainfall, its influence on solar radiation. The possibility of increasing rainfall by seeding to winter stratus and the preliminary effect of enforcement of increasing rainfall were discussed too.

Abstract:In this paper, the monsoon circulation characteristic and 500hPa energy wave spectrum of rainy and dry mei-yu period are analysed using observational data. The results indicate that the contrast between rainy and dry mei-yu period is erident.

Abstract:Based on the statistical method used to operational processing an improved me-thod has been developed for vetrieving atmospheric temperature and water vapor-nrofiles from TOVS data. The accuracy of this method is compared with that of operational method by numerical simulation study.The present method is more accurate han operational method.

Abstract:In this paper,the author has calculated the potential economic benefit for Forest Fire forecasting. The results show that the loss of all 165 forest farms over Liaoning Province, using the optimum decision of regression value instead of the mean value "ecision, will reduce the 78.7%, which is equivalent about 3,430,000 yuan, when the loss function is the quadratic function of forecasting errors.