Abstract
The discharge characteristics in thunderstorm have been calculated by using a numerical cloud model. The results indicate that discharge processes occur when simulated thunderstorm developed at the stage of 30—45 min and initial locations of discharge mainly dlstributes between 4.4—4.8 km and 6.4—6.8 km above the ground (corresponding to ambient temperature of - 10°C and - 25°C). In simulated thunderstorm with a tripole electric structure, 10% of discharges occur between upper positiie charge area and middle negative charge area and propagate upwards (from middle negative charge area to upper positive charge area); while, 90% of discharges occur between lower positive charge area and middle negative charge area and propagate downwards (from negative charge area to lower positive charge area). There is a positive correlation between updraft and discharge. The occurrence of discharge process needs hydrometer with a specified concentration and size in cloud (corresponding to ⩾5 mm/h for precipitation on the ground). The maximum value of precipitation lags the peak of discharge number by a period of about several minutes. The discharge and its variation in thunderstorm are an important factor for monitoring and forecasting thunderstorm.
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References
Williams, E. R., Weber, M. E., Orville, R. E., The relationship between lightning type: and convective state of thunderclouds,J. Geophys. Res., 1989b, 94: 13213.
Carey, L. D., Rutledge, S. A., Electrical and multiparameter radar observations of a severe hailstorm, inProceedings of 10th International Conference on Atmospheric Electricity, The Society of Atmospheric Electricity of Japan, Osaka, Japan, June, 1996, 212–215.
Krehbiel, P. R., The electrical structure of thunderstorms, inThe Earth’s Electrical Environment, Washington, D. C.: National Academy Press, 1986, 90–113.
Yan Muhong, Guo Changming, Ge Zhengmo, Numerical study of cloud dynamic-electrification in an axisymmetric, time-dependent cloud model,Acta Geophysica Sinica (in Chinese), 1996, 39: 52.
Griffiths, R. F., Phelps, C. T., The effects of air pressure and water vapor content on the propagation of positive corona streamers and their implications to lightning initiation,Q. J. R. Meteor, Soc., 1976, 102: 419.
Helsdon, J.H., Wu, G., Farley, R.D., An intracloud lightning parameterization scheme for a storm electrification model,J. Geophys. Res., 1992, 97: 5865.
MacGorman, D.R., Few, A. A., Teer, T. L., Layered lightning activity,J. Geophys. Res., 1981, 86: 9900.
Takahashi, T., Thunderstrom electrification—A numerical study,J. Atmos. Sci., 1984, 41: 2541.
Shao Xuanmin, Liu **nsheng, A preliminary analysis of intracloud lightning flashes and lower positive charge of thunderclouds,Plateau Meteorology (in Chinese), 1987, 6: 317.
Qie **ushu, Yu Ye. Zhang Guangshuet al., Initial process during one negative ground lightning discharge in Zhongchuan area,Plateau Meteorology (in Chinese), 1998, 17(1): 34.
Qie **ushu, Yan Muhong, Guo Changininget al., Lightning data and study of thunderstorm nowcasting,Acta Meteorological Sinica, 1993, 7: 244.
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Zhang, Y., Yan, M. & Liu, X. Simulation study of discharge processes in thunderstorm. Chin. Sci. Bull. 44, 2098–2102 (1999). https://doi.org/10.1007/BF02884930
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DOI: https://doi.org/10.1007/BF02884930