| 绵阳城市热岛效应分析 |
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| 引用本文： | 徐卫民,蔡元刚,吴婷婷,等.绵阳城市热岛效应分析[J].高原山地气象研究,2019,39(3):91-96. |
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| 作者姓名： | 徐卫民 蔡元刚 吴婷婷 等 |
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| 作者单位： | 四川省绵阳市气象局, 绵阳 621000 |
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| 基金项目： | 绵阳市气象局2018年度科学技术研究开发课题(2018-22) |
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| 摘 要： | 本文首先采用模糊c-均值聚类法和剔除法,筛选出用于计算绵阳城市热岛强度的10个城市站和15个郊区站,然后利用这25个自动气象站的逐时气温资料,分析2018年绵阳城市热岛效应不同时间尺度的变化特征。结果表明:2018年绵阳存在城市热岛效应,平均热岛强度为0.64℃,表现为弱热岛等级;四季热岛效应冬季最强,其次是春季,夏季和秋季相当;逐月热岛强度3月最大、7月最小;绵阳城市热岛效应存在明显的日变化,热岛强度夜间大于白天,日最大热岛强度几乎均出现在晚上。
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| 关 键 词： | 热岛强度 自动气象站 模糊c-均值聚类法 剔除法 |
| 收稿时间： | 2019-04-30 |
Analysis of Urban Heat Island Effect in Mianyang |
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| Affiliation: | Mianyang Meteorological Bureau, Mianyang 621000, China |
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| Abstract: | In this paper,10 urban stations and 15 suburban stationswere selected by Fuzzy C-means Algorithm and Elimination Method to calculate the urban heat island Intensity (I UHI).The hourly air temperature of 25 automatic meteorological stations is used to study the variation characteristics of the urban heat island effect in 2018.The results show that there is urban heat island effect in Mianyang in 2018,the average I UHI is 0.64℃,characterized by weak level of the urban heat island;The urban heat island effect was strongest in winter,followed by spring,summer was as same as autumn;the highest I UHI was in March,while the lowest I UHI was in July.The urban heat island effect in Mianyang had obvious day-time variation characteristics.The intensity at night was obviously higher than that at daytime,and the maximum I UHIoccurs almost at night. |
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