| 广州市区与增城市气象要素差异性分析 |
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| 引用本文： | 周洋,蔡蕊,陆杰英.广州市区与增城市气象要素差异性分析[J].广东气象,2014,36(6):44-49. |
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| 作者姓名： | 周洋 蔡蕊 陆杰英 |
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| 作者单位： | 增城市气象局,广东广州,511300 |
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| 摘 要： | 利用广州市区和增城市1982—2013年的气象观测资料,应用数据对比和相关分析的方法,从年际和季节变化两个角度,分析了两地气象要素的差异性;运用拉格朗日模式,模拟了2个个例的水汽来源,分析两站降水量差异性的可能原因。结果表明:城市热岛效应导致广州市区温度高于增城市,而相对湿度低于增城市;城市冠层作用使得广州市区风速明显低于增城市。差异性存在明显的季节不同,温度和相对湿度在秋季差异最明显,风速在冬季差异最明显,而降水量在夏季差异最明显。通过相关性分析得到两站的温度以及相对湿度的相关系数达到0.99和0.89,可利用经验公式联系两地的预报结果。HYSPLIT模式模拟水汽来源表明,不同的水汽来源可以导致广州市区和增城市降水先后顺序以及降水量的差异。
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| 关 键 词： | 气象观测 气象要素 城市效应 广州市区 增城市 |
Analysis of the Difference of Meteorological Elements Between Urban Guangzhou and Zengcheng City |
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| ZHOU Yang,CAI Rui,LU Jie-ying.Analysis of the Difference of Meteorological Elements Between Urban Guangzhou and Zengcheng City[J].Journal of Guangdong Meteorology,2014,36(6):44-49. |
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| Authors: | ZHOU Yang CAI Rui LU Jie-ying |
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| Institution: | (Meteorological Bureau of Zengcheng City, Guangzhou 511300) |
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| Abstract: | Based on the meteorological observations of urban Guangzhou and Zengcheng City from 1982 to 2013 and with the methods of data comparison and correlation analysis, this paper studies the differences in meteorological elements between the two cities on the interannual and seasonal scale. The Lagrangian model is used to simulate the source of water vapor in two cases and investigate into the possible causes for the differences in rainfall between two stations of the cities. The result is shown as follows. The effect of urban heat-island is such that temperature （relative humidity） is higher （lower） in urban Guangzhou than in Zengcheng city. The canopy effect makes the wind speed much lower in urban Guangzhou than in Zengcheng city. The difference is highly seasonal; temperature and relative humidity have the most obvious difference, wind speed has the largest difference in winter, and rainfall has the maximum difference in summer. Through correlation analysis, it is known that the correlation coefficient is 0.99 and 0.89 for temperature and relative humidity respectively. An empirical formula is used to link up the results of forecasts for the two locations. As shown in the HYSPLIT model-simulated water vapor source, different sources of water vapor can result in different sequential order of raining as well as the difference in rainfall between urban Guangzhou and Zengcheng city. |
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| Keywords: | meteorological observation meteorological elements urban effect urban Guangzhou Zengcheng city |
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