| 基于气温日较差的西宁热岛效应研究 |
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| 引用本文： | 何永晴,尹继鑫,赵娟,等.基于气温日较差的西宁热岛效应研究[J].高原山地气象研究,2018,38(2):58-61. |
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| 作者姓名： | 何永晴 尹继鑫 赵娟 等 |
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| 作者单位： | 1. 青海省西宁市气象局, 西宁 810003; |
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| 基金项目： | 青海省气象局2017年山洪地质灾害气象保障工程城市山洪地质灾害防御能力建设-西宁市城市热岛分析子课题 |
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| 摘 要： | 本文选取西宁(城区)、湟中(南郊)、互助(北郊)3个气象观测站1986～2015年最高和最低温度资料，研究分析基于气温日较差的西宁热岛效应。结果表明，近30年城区、北郊年平均日较差总体呈下降趋势，下降幅度分别为0.15和0.29℃/10a，年代际分析表明21世纪10年代城区日较差距平偏低最多为0.73℃，日较差存在周末效应；城区日较差下降速率快于郊区，日较差变化趋势春季为正，其余各季为负，城区冬季变化显著，大于郊区；城区日较差逐渐减小，说明城市浑浊度逐年增加，热岛效应增强。
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| 关 键 词： | 日较差 趋势 热岛效应 周末效应 |
| 收稿时间： | 2018-06-02 |
Heat Island in Xining City Based on Diurnal Temperature Range |
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| Affiliation: | 1. Xining Meteorological Bureau, Xining 810003, China;2. Xining Institute of Surveying and Mapping, Xining 810003, China |
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| Abstract: | The maximum and minimum temperature data of three stations in Xining (city), Huangzhong (southern suburb) and Huzhu (northern suburb) from 1986 to 2015 were selected to study the Xining heat island effect based on the Diurnal Temperature Range (DTR). The results show that the annual average DTR of urban and northern suburbs have been on the decline for the past 30 years, decreasing by 0.15 and 0.29 ℃/10a. The 21st century 10 years, The urban area was relatively low level of up to 0.73 ℃. DTR had a weekend effect. Urban DTR declined faster than the suburbs. The trend of the DTR was positive in spring and negative in the rest of the year, especially in urban areas in winter, decreasing by -0.76, which was much larger than the suburbs. Urban DTR gradually reduced, indicating that the degree of urban turbidity increased year by year, Urban Heat Island increased. |
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