電場(chǎng)時(shí)序差分在雷電預(yù)警中的有效性分析

doi:10.3969/2012jms.00**

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電場(chǎng)時(shí)序差分在雷電預(yù)警中的有效性分析
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                        10.3969/2012jms.00**
                    
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中圖分類(lèi)號(hào):P427．3
基金項(xiàng)目:上海市科委項(xiàng)目(08dz050900)，上海市氣象局面上課題(ms200807)

Validity analysis of electric field temporal difference in thunderstorm warning

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摘要:

目前國(guó)內(nèi)應(yīng)用地面大氣電場(chǎng)儀進(jìn)行雷電預(yù)警一般使用閾值法，這一方法直接使用電場(chǎng)觀測(cè)值的多重閾值來(lái)進(jìn)行預(yù)警，在實(shí)際應(yīng)用中容易出現(xiàn)誤報(bào)和漏報(bào)的現(xiàn)象。本文通過(guò)對(duì)晴天大氣電場(chǎng)和雷暴天氣大氣電場(chǎng)分析了大氣電場(chǎng)時(shí)序差分的基本特征，并結(jié)合SAFIR3000閃電定位觀測(cè)數(shù)據(jù)，對(duì)典型雷暴過(guò)程下的電場(chǎng)時(shí)序差分進(jìn)行了深入分析。本文還選取了有雷暴發(fā)生和無(wú)雷暴發(fā)生的預(yù)警應(yīng)用個(gè)例進(jìn)行了分析，分析結(jié)果表明電場(chǎng)時(shí)序差分的應(yīng)用能在一定程度上提高雷電預(yù)警的效率。

Abstract:

At present, threshold method is commonly applied in thunderstorm warning with ground atmospheric electric field mill in China. Multi-threshold of electric field observations is used to give early warning directly. But it easily makes mistake and gives failure reports in application. Temporal difference electric field on the ground, which represents changing rate electric field with time, can reflect the intensity of atmospheric electric field change. The basic characteristic of electric field temporal difference was found with analyzing electric field data of fair weather and thunderstorm weather. Electric field temporal difference of typical thunderstorm processes was analyzed with the lightning positioning data of SAFIR3000. Two warning cases, one with thunderstorm and the other without thunderstorm, were selected to analyze validity of electric field temporal difference in thunderstorm warning. Result showed that electric field temporal difference can help to improve efficiency of thunderstorm warning.

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王強(qiáng),王建初,顧宇丹.電場(chǎng)時(shí)序差分在雷電預(yù)警中的有效性分析.氣象科學(xué),2009,(5):657-663 Wang Qiang, Wang Jianchu, Gu Yudan. Validity analysis of electric field temporal difference in thunderstorm warning. Journal of the Meteorological Sciences,2009,(5):657-663

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抽查舔水白紧大视频,冲喜娘子超甜哒激情五月,亚洲黄色图片偷拍网站,亚洲三级黄片免费播放,91在线观看喷潮红桃,日韩精品在线观看一区二区,久久久久久久久久久久黄色片子,日产精品99久久久久久久久,欧洲亚洲另类图片小说