以3D—Barnes方案插值的兰州站新一代天气雷达反射率因子等高平面资料，用垂直累积液态含水量（Vertically Integrated Liquid Water Content，简称：VIL）的理论模式计算单体VIL、用MAX函数逐次提取最大VIL（简称：VILmax），采用统计...以3D—Barnes方案插值的兰州站新一代天气雷达反射率因子等高平面资料，用垂直累积液态含水量（Vertically Integrated Liquid Water Content，简称：VIL）的理论模式计算单体VIL、用MAX函数逐次提取最大VIL（简称：VILmax），采用统计和分段函数处理技术，对20042005年5～8月青藏高原东北侧的32个强对流云单体VILmax的演变特征及其在冰雹云识别中的应用进行了分析。结果表明：（1）强对流云单体VILmax在演变过程中均是先增加，后减少，在时间序列曲线中表现为单峰型特征，其中冰雹云单体VILmax存在“爆发式增长及突然降低”现象，这是区别雷雨云单体的一个重要特征；（2）冰雹云单体首次降雹前4个资料时间间隔内VILmax将出现两次“爆发式增长”现象，第一次爆发式增长时不会降雹，维持1～2个资料时间间隔后第二次出现时开始降雹；同一单体再次降雹前没有第一次“爆发式增长”现象，出现“突然降低”现象时降雹均停止；（3）VILmax变化率（简称：GVILmax）的“正（负）峰”现象与冰雹云单体VILmax的“爆发式增长及突然降低”现象对应的时间完全吻合，利用GVILmax建立的冰雹云识别流程在实际业务中具有较高的使用价值。展开更多
结合兰州新一代天气雷达的使用情况,介绍了其物理量产品中垂直积分液态含水量(Verti-cally Integrated L iqu id W ater Content,)的理论计算模式,从雷达观测距离对VIL计算的影响、VIL理论模式中的反射率强度和探测高度对VIL计算的影响...结合兰州新一代天气雷达的使用情况,介绍了其物理量产品中垂直积分液态含水量(Verti-cally Integrated L iqu id W ater Content,)的理论计算模式,从雷达观测距离对VIL计算的影响、VIL理论模式中的反射率强度和探测高度对VIL计算的影响及VIL在强对流天气识别中受季节变化的影响3方面提出了思考,以期为今后应用VIL识别强对流天气提供参考。展开更多
Based on rural drainage problems, the research analyzed traditional water culture in ancient vil ages in Jiangxi, as wel as flood control theory, and proposed specific theories and measures for drainage system improve...Based on rural drainage problems, the research analyzed traditional water culture in ancient vil ages in Jiangxi, as wel as flood control theory, and proposed specific theories and measures for drainage system improvement and construction in order to seek proper rural drainage system and promote rural sustainable develop-ment.展开更多
Through analyzing historical value of patriarchal society, village layout, and characteristic folk dwel ings in Ancient Sangyuan Village, Jishui County, Jiangxi Province, this paper proposed the protective planning ba...Through analyzing historical value of patriarchal society, village layout, and characteristic folk dwel ings in Ancient Sangyuan Village, Jishui County, Jiangxi Province, this paper proposed the protective planning based on the gist of protecting villagers' benefits, applied classified protection of buildings, enhanced water protection and landscape design, and tried to carry out its intangible cultures via folk custom activities, in order to further develop the value of its historical and cultural resources.展开更多
文摘以3D—Barnes方案插值的兰州站新一代天气雷达反射率因子等高平面资料，用垂直累积液态含水量（Vertically Integrated Liquid Water Content，简称：VIL）的理论模式计算单体VIL、用MAX函数逐次提取最大VIL（简称：VILmax），采用统计和分段函数处理技术，对20042005年5～8月青藏高原东北侧的32个强对流云单体VILmax的演变特征及其在冰雹云识别中的应用进行了分析。结果表明：（1）强对流云单体VILmax在演变过程中均是先增加，后减少，在时间序列曲线中表现为单峰型特征，其中冰雹云单体VILmax存在“爆发式增长及突然降低”现象，这是区别雷雨云单体的一个重要特征；（2）冰雹云单体首次降雹前4个资料时间间隔内VILmax将出现两次“爆发式增长”现象，第一次爆发式增长时不会降雹，维持1～2个资料时间间隔后第二次出现时开始降雹；同一单体再次降雹前没有第一次“爆发式增长”现象，出现“突然降低”现象时降雹均停止；（3）VILmax变化率（简称：GVILmax）的“正（负）峰”现象与冰雹云单体VILmax的“爆发式增长及突然降低”现象对应的时间完全吻合，利用GVILmax建立的冰雹云识别流程在实际业务中具有较高的使用价值。
文摘结合兰州新一代天气雷达的使用情况,介绍了其物理量产品中垂直积分液态含水量(Verti-cally Integrated L iqu id W ater Content,)的理论计算模式,从雷达观测距离对VIL计算的影响、VIL理论模式中的反射率强度和探测高度对VIL计算的影响及VIL在强对流天气识别中受季节变化的影响3方面提出了思考,以期为今后应用VIL识别强对流天气提供参考。
基金Supported by"Twelfth Five-year Plan"of Jiangxi Provincial Social Sciences Program(14SH05)~~
文摘Based on rural drainage problems, the research analyzed traditional water culture in ancient vil ages in Jiangxi, as wel as flood control theory, and proposed specific theories and measures for drainage system improvement and construction in order to seek proper rural drainage system and promote rural sustainable develop-ment.
基金Sponsored by"Twelfth Five-year Plan"(2014)of Jiangxi Provincial Social Science Program(14SH05)Humanities and Social Science Program of Jiangxi Provincial Universities and Colleges(JC1434)Jiangxi Provincial Arts and Science Program(YG2014113)
文摘Through analyzing historical value of patriarchal society, village layout, and characteristic folk dwel ings in Ancient Sangyuan Village, Jishui County, Jiangxi Province, this paper proposed the protective planning based on the gist of protecting villagers' benefits, applied classified protection of buildings, enhanced water protection and landscape design, and tried to carry out its intangible cultures via folk custom activities, in order to further develop the value of its historical and cultural resources.
