Lightning activity and its relationship with typhoon intensity and vertical wind shear for Super Typhoon Haiyan (1330)          下载免费PDF全文

王芳  郄秀书  刘冬霞  史海锋 《Acta Meteorologica Sinica》2016,30(1):117-127

Super Typhoon Haiyan (1330), which occurred in 2013, is the most powerful typhoon during landfall in the meteorological record. In this study, the temporal and spatial distributions of lightning activity of Haiyan were analyzed by using the lightning data from the World Wide Lightning Location Network, typhoon intensity and position data from the China Meteorological Administration, and horizontal wind data from the ECMWF. Three distinct regions were identified in the spatial distribution of daily average lightning density, with the maxima in the inner core and the minima in the inner rainband. The lightning density in the intensifying stage of Haiyan was greater than that in its weakening stage. During the time when the typhoon intensity measured with maximum sustained wind speed was between 32.7 and 41.4 ms^?1, the storm had the largest lightning density in the inner core, compared with other intensity stages. In contrast to earlier typhoon studies, the eyewall lightning burst out three times. The first two eyewall lightning outbreaks occurred during the period of rapid intensification and before the maximum intensity of the storm, suggesting that the eyewall lightning activity could be used to identify the change in tropical cyclone intensity. The flashes frequently occurred in the inner core, and in the outer rainbands with the black body temperature below 220 K. Combined with the ECMWF wind data, the influences of vertical wind shear (VWS) on the azimuthal distribution of flashes were also analyzed, showing that strong VWS produced downshear left asymmetry of lightning activity in the inner core and downshear right asymmetry in the rainbands.  相似文献   

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史海锋  张卫斌 《大地测量与地球动力学》2012,32(5):78-81

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B/S架构下防雷减灾信息管理系统的设计和实现     

史海锋 《浙江气象》2015,(2):46-49

主要针对在B/S架构下防雷减灾信息管理系统的功能设计、数据组织和关键问题等进行了介绍。提出了以区县为基础、上级可以查看下级的数据组织模式,以业务内网为基础,内外网同时访问的数据的访问与操作方式,实现对省市县3级防雷减灾信息的一体化管理。系统业务运行表明,能较好地规范全省防雷业务工作,能有效强化防雷工作的监管和管理,极大的提高了业务流转效率。  相似文献   

气象部门防雷安全监管职能分析与探讨     

王月宾  廖良清  王仕星  周福  周奔  丁海芳  史海锋  陈昊 《浙江气象》2018,(2)

国务院推行审批制度改革以来,下发了一系列涉及防雷管理职能调整的决定,取消了部分审批事项,对建设工程防雷装置行政许可事项进行了优化整合,防雷检测市场向社会全面开放。地方政府进一步推进审批制度改革,要求减少审批环节、减少申请材料、缩短办事时间。如何界定部门间的防雷安全监管职能,适应地方审批制度改革,实现气象部门依法依规履行防雷安全监管职能,做到不缺位、不越位,是今后一个时期防雷管理面临的新问题。通过对近年来防雷安全监管实践的问题分析,提出解决问题的思路和方法。  相似文献