| 卫辉市能见度变化特征及与气象因子的相关性分析 |
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| 引用本文： | 张惠霞.卫辉市能见度变化特征及与气象因子的相关性分析[J].中国农学通报,2016,32(23):160-164. |
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| 作者姓名： | 张惠霞 |
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| 作者单位： | 卫辉市气象局 |
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| 基金项目： | 新乡市科技发展项目基金“基于arcgis的新乡地区气温、降水的时空变化特征”(14SF03)。 |
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| 摘 要： | 为提高能见度的预测预报水平，减轻低能见度带来的危害，收集了卫辉市1991—2015 年水平能见度及地面气象要素资料，运用数理统计、相关系数等方法，分析了卫辉市能见度的变化特征及与气象因子的关联。结果表明：25 年来能见度的年际变化呈先减后增的特征，低谷出现在21 世纪初；四季中春季最好，冬季最差；一年中最低值出现在12 月，最高值出现在5 月；一日中上午和17 时以后较差，13—15时最好。大气低能见度和较差能见度出现的频率在2000 年以前呈波动上升趋势，2009 年以后呈波动下降趋势；一年中出现频率12 月最高，最小频率出现在7 月和5 月。能见度与相对湿度呈极显著负相关，与风速呈显著正相关，与气温和气压的相关关系不显著。
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| 关 键 词： | 树干注药 树干注药 防治效果 春尺蛾 试验研究 |
| 收稿时间： | 2016/3/11 0:00:00 |
| 修稿时间： | 4/8/2016 12:00:00 AM |
Visibility in Weihui: Variation Characteristics and Its Correlation with Meteorological Factors |
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| Abstract: | The paper aims to improve the forecast level of visibility and reduce the harm caused by low visibility. The authors used the mathematical statistics and correlation coefficient method to analyze the variation characteristics of visibility and the correlation between the variation of visibility and the meteorological factors by using the horizontal visibility and surface meteorological data from 1991 to 2015 of Weihui. The results showed that: the inter-annual variation trend first decreased and then increased in the 25 years, the low-value area appeared in the early 21st century; the seasonal variation value was best in spring, worst in winter; the lowest value appeared in December and the highest in May; the daily variation value was poor in the morning and after 17:00, and was best between 13:00 to 15:00; the frequency of atmospheric visibility and low atmospheric visibility had an upward trend before 2000, and a fluctuated downward trend after 2009; and the highest frequency appeared in December, the lowest frequency appeared in July and May; the visibility and relative humidity had significantly negative correlation, on the other hand, it had significantly positive correlation with wind speed, and it had no significant correlation with temperature and air pressure. |
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| Keywords: | atmospheric visibility variation characteristics influence factor |
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