Abstract:In human living environment,there are many phenomenona that are closely relative to meteorology.All subjects that study atmospheric phenomenona related to human lives and their change laws were called environmental meteorology.To protect environment and humanity by adopting all sorts of ways and measures,people need urgently to understand the environment which is closely related with their daily life and the change of all factors that influence environment.In order to meet the increasing needs of government departments,social production and human activities,the services of special meteorological forecasts emerge.

Abstract:The cause of the southward withdraw of the west Pacific subtropical high in July 1998 was discussed by using of the OLR formula.It suggests that this OLR method describing daily behavior of the west Pacific subtropical high is favorable for exploring the effect of strong tropical convective cloud cluster on the subtropical high.

Abstract:By studying the abnormal track of typhoon MAGGIE moved along the coast of Guangdong province,four qualitative conditions were concluded.When they appear at the same time,the track of landing typhoon tends to be abnormal.

Abstract:The torrential rain brought about by a South west China vortex in Changjiang Gorges and its vicinity in 28—29,June 1998 was simulated using MM5.Comparing the two simulations with different model topography schemes,it is indicated that the mountains in east Sichuan Basin has no significant effects on the genesis of South west China vortex,but has important influence on the intensity and the feature of distribution of the heavy rain events.Mainly,the warm and wet flow was blocked by Daba-Shenonggia mountain range and resulted in a torrential rain bend to the windward foot of the mountain range,which was also a heavy rain region at the windward slope of the southwest Hubei mountainous district,and the east moving precipitation system was detained by the mountains in east of the basin,as the sequence,the precipitation strengthened upstream and weakened downstream.

Abstract:Based on a concise statement of a fine MAPS model,quantify precipitation forecast of the fine MAPS model in summer in 1999 in Sanxia Dam region was analyzed. Results show that the model can give preferable short term strong precipitation forecast in the Sanxia Dam and surrounding areas.

Abstract:After satellite image was processed,Fourier expansion was made for MCS's boundary line.Using the conservatism of morphology feature,the translation vector was obtained and the extrapolation forecast was given The result shows that the accuracy is higher than visual observation.

Abstract:The rainfall prediction system using neural unit method was introduced. Strong precipitation prediction in the flood season of 1999 in the Sanxia-region was given by the system.The results show that the system′s prediction was ability on strong precipitation process was andanalysed.The system has a certain prediction ability on rainfall process,and it is better especially for transferring synoptic process and strong precipitation process.

Abstract:In order to satisfy the demand of Sanxia Dam irrigation works construction,the research on rainfall forecast for the Dam region was conducted.The strong rainfall process in Sanxia Dam region was analysed and some relative statistics laws were summarized.On this basis a 6—12 hours synthesis forecast method for strong rainfall process was obtained by utilizing numerical products of rainfall prediction from Japan,satellite pictures,radar data and synoptic experience.The experiment in 1999 shows that the method is effective certainly for forecasting the strong rainfall process which affected the Dam region.

Abstract:By utilizing the risk degree as abnormal climate effect on agricultural production and discussing the general regular of the major disasters′s risk degree in Guizhou province,it is pointed out that the drought′s risk degree is larger and the flooding damage,wind-hail and frost′s risk degrees are smaller for any production object The larger risk degrees of drought,the flooding damage,wind-hail and frost appear are mainly in heavy summer drought area,heavy autumn continuous rain area,heavy hail area and heavy frost area.

Abstract:Using the method of conversion probability and the prediction principle of maximum probability,the conversion principle of random time sequence state of early frost date,latest frost date and monthly precipitation at Akesu city in Xinjang during 1954-1995 was analysed.Combining the initial distribution of every sequence state,the prediction model was given.The forecast for every factor in 1996-1999 shows that the method′s prediction effect and applying effect are better.

Abstract:Aimed directly at characteristics of topography in Huadong district,combining together current focus point of agrometeorological service,an agrometeorological information system with VC++5.0 used Huadong district was developed.The system runs neatly in Win 95/98/NT.It not only solves the problem that software go up one grade in secondly project of agrometeorological information,but also makes interpreting,drawing,charting of information more quickly,beautifully and applicable.

Abstract:By analyzing the meridional variation of atmospheric motion over polar high latitude of the Northern Hemisphere,the circulation variation of the Northern Hemisphere polar low at the 100hPa level,the longitudinal motion variation of polar low at the 200hPa and the 850hPa level near the equator and so on,the synchronization or the high correlation between the variation period of atmospheric motion and that of lunar tide generating force field was revealed.That those known statistical phenomena,such as the quasi synchronous variation of global subtropical high,the 6-7 day periodic oscillation of subtropical high over the Weat Pacific,the about 14 day oscillation of general circulation of atmosphere,the about 7 day and about 14 day weather natural period and so on,are the results of lunar tide generating force field affecting global atmosphere.

Abstract:By analyzing the relation of annual rice output and the average soil temperature at 5cm level from June to September in Dunhua city,Jilin Province ,the technique of the soil temperature index was presented according to different time and growth stages of rice.By regulating soil temperature at 5cm level,the highly efficient production according to the four year test from 1986 to 1990 was obtained.A regulating technique of the soil temperature for steady rice output increase in a cold climate was suggested.

Abstract:A solution of virtual co-laboratory involved by both Chinese and American atmospheric scientists is proposed.The laboratory includes virtual data/ information system,virtual simulation system,virtual application analysis system,virtual training school,virtual library,virtual visualization laboratory,virtual publication system and so on.