| 黑龙江省闪电活动特征及其与地面相对湿度的响应关系 |
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| 引用本文： | 袁湘玲,马虹旭,陈石定,刘春芳.黑龙江省闪电活动特征及其与地面相对湿度的响应关系[J].气象与环境学报,2020,36(5):91-96. |
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| 作者姓名： | 袁湘玲 马虹旭 陈石定 刘春芳 |
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| 作者单位： | 1. 齐齐哈尔市气象局, 黑龙江 齐齐哈尔 1610062. 辽宁省防雷技术服务中心, 辽宁 沈阳 1101663. 湖北省公众气象服务中心, 湖北 武汉 430074 |
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| 摘 要： | 利用2006-2017年黑龙江省闪电定位资料和日平均地面相对湿度资料，采用数理统计、Pearson相关分析、GIS空间分析技术，研究了闪电密度和强度对地面相对湿度（RH）的响应关系。结果表明：地面RH过小或过大都不利于闪电活动产生；当RH < 25%时，几乎无闪电发生，当RH < 77%时，RH增加有利于闪电活动发生，当RH>79%时，随着RH增加，闪电活动减少；当RH < 77%时，闪电密度与之呈正相关，闪电强度与之呈负相关；当RH>79%时，闪电密度与之呈负相关，闪电强度与之呈正相关；地面RH的临界值域约为77%-79%；70%≤ RH ≤ 90%区间为闪电易发湿度区间，在闪电密度与湿度相关度高的区域，闪电更趋于集中发生在闪电易发湿度区间。
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| 关 键 词： | 闪电密度 闪电强度 相对湿度 响应关系 |
| 收稿时间： | 2019-10-16 |
Characteristics of lightning activity and its response to the surface relative humidity in Heilongjiang province |
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| Xiang-ling YUAN,Hong-xu MA,Shi-ding CHEN,Chun-fang LIU.Characteristics of lightning activity and its response to the surface relative humidity in Heilongjiang province[J].Journal of Meteorology and Environment,2020,36(5):91-96. |
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| Authors: | Xiang-ling YUAN Hong-xu MA Shi-ding CHEN Chun-fang LIU |
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| Institution: | 1. Qiqihar Meteorological Service, Qiqihar 161006, China2. Service Center of Lightning Protection Technology in Liaoning Province, Shenyang 110166, China3. Hubei Public Meteorological Service Center, Wuhan 430074, China |
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| Abstract: | The lightning location and daily mean surface relative humidity (RH) data in Heilongjiang province during 2006-2017 were used to analyze the relationships between the density and intensity of lightning and RH based on mathematical statistics, Pearson correlation analysis and GIS spatial analysis methods.The results indicate that the smaller or larger RH is disadvantageous to the generation of lightning activity.Specifically, the lightning hardly occurs if RH is less than 25%, and it is gradually easily triggered with the increase of RH between 25% and 77%.However, the lightning is decreasing with the increase of RH if the latter is larger than 79%.In addition, RH less than 77% has positive and negative correlation with density and intensity of lighting, respectively.Inversely, RH larger than 79% shows negative and positive correlation with density and intensity of lighting, respectively.The threshold of RH is between 77% and 79%.The interval of 70%-90% is the lightning-prone RH, where the lightning density is closely related to RH and the lightning tends to occur in clusters. |
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| Keywords: | Lightning density Lightning intensity Relative humidity Relationship |
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