CN 11-2282/P
- Volume 13,Issue 9,1987 Table of Contents
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1987, 13(9):3-7. DOI: 10.7519/j.issn.1000-0526.1987.09.001
Abstract:In this paper, a new technique, the status and development of the Model-Output Re-Diagnoses (MOD)and graphic display for numerical weather productions have been discussed. The role in weather analysis and forecasting for this technique have also been documented.The current development of operational systems for computer-graphic display in Beijing Meteorological center and some ideas to develop those operational systems for the local stations have been discussed.
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1987, 13(9):8-13. DOI: 10.7519/j.issn.1000-0526.1987.9.002
Abstract:The approach to produce MOS probability forecasts of moderate and heavy .precipitation is shown in the paper. So are the conditions to narrow sample size, design and derivation of predictors, procedure to adjust the forecast probabilities as well as verification and reasons for errors. And it expounds how the fields on a surfaces from model forecasts used as predictors, two dimensional interpolation, and variables' changes are made and employed in MOS forecasting. Their effects on MOS forecasts are also explained.
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1987, 13(9):14-20. DOI: 10.7519/j.issn.1000-0526.1987.9.003
Abstract:Based on the mesoanalysis of six convective processes in 500hPa aft-trough pattern. Some characteristics of activities of severe convective systems over East China are found. Combined with the actual situation, the auther points out the leads when using weather radars data to do nowcasting of severe convective weather.
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1987, 13(9):21-24. DOI: 10.7519/j.issn.1000-0526.1987.9.004
Abstract:It shows that there are 353 years with rainy autumn from A. D. first to 1949, that is, one in about every 5.5 years. From A. D. 1950 to 1985, there are 8 years with rainy autumn. From A. D. first to 1985, there are two below periods (years with rainy autumn below average), two very below ones, three above ones, and one very above one. It lies in very above period now, and in the coming 30 years, rainy autumns will below.
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1987, 13(9):25-29. DOI: 10.7519/j.issn.1000-0526.1987.9.005
Abstract:It has been shown by studying the radar echo top heights that the abnormal refraction of the atmosphere can cause obvious errors in the radar measurements of height. But echo top height errors are negligible in short range under standard condition of the atmosphere because errors cansed by several factors counteract each other, BO the radar measurements of convective cloud top heights are quite accurate.
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