| 武汉市城市热岛强度非对称性变化 |
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| 引用本文： | 陈正洪,王海军,任国玉.武汉市城市热岛强度非对称性变化[J].气候变化研究进展,2007,3(5):282-286. |
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| 作者姓名： | 陈正洪 王海军 任国玉 |
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| 作者单位： | 武汉区域气候中心 中国气象局国家气候中心 |
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| 基金项目： | 武汉区域气象中心科技发展基金重点项目;中国气象局科研项目;科技部科研项目 |
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| 摘 要： | 利用武汉市区气象站及其周边4个县气象站1960-2005年的气温资料，计算了46 a及分时段的季节和年平均气温、平均最高和最低气温倾向率，城市热岛强度倾向率及其贡献率。结果表明：46 a来，城区和郊区的平均气温均以上升趋势为主，最低气温增幅最大，最高气温增幅最小，甚至下降；冬季增幅最快，夏季增幅最慢，甚至下降，这是第一类非对称性。 城市热岛效应也存在增强趋势，以年平均、最低和最高气温表示的城市热岛强度倾向率分别为0.235℃/10 a、0.425℃/10 a和0.034℃/10 a，热岛效应贡献率分别达到60.4%、67.7%和21.8%，这是第二类非对称性。 46 a来的增温和城市热岛强度加强主要是最近23 a快速增温所致，进入本世纪增温进一步加剧。
摘要 计算了武汉市气象站、周边4县气象站平均的1960～2005年间以及前后两半时段四季和年平均、最高、最低气温倾向率，城市热岛强度倾向率和贡献率。结果表明：1）46年来，城区和郊区的平均气温均以增趋势为主，平均气温倾向率为正，最低气温增幅最大，最高气温增幅最小甚至下降，冬季增幅最快，夏季增幅最慢甚至下降，这是第一类非对称性；2）城市热岛效应也存在增趋势，以年平均、最低、最高气温表示的城市热岛强度倾向率分别为0.235、0.425、0.034 ℃/10a，热岛效应贡献率分别达到60.4%、67.7%、21.8%，这是第二类非对称性，3）46年来的增温和城市热岛强度加强主要是后23年快速增温所致，前23年气温变化不明显。武汉市气象站气温资料严重地保留着城市化影响，建议尽快迁站。
关键词 城市热岛强度 最高气温 最低气温 非对称性变化
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| 关 键 词： | 城市热岛强度 最高气温 最低气温 非对称性变化 |
| 文章编号： | 1673-1719（2007）05-0282-05 |
| 收稿时间： | 2007-03-05 |
| 修稿时间： | 2007-03-05 |
Asymmetrical Change of Urban Heat Island Intensity in Wuhan, China |
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| Chen Zhenghong,Wang Haijun,Ren Guoyu.Asymmetrical Change of Urban Heat Island Intensity in Wuhan, China[J].Advances in Climate Change,2007,3(5):282-286. |
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| Authors: | Chen Zhenghong Wang Haijun Ren Guoyu |
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| Institution: | 1 Wuhan Regional Climate Center, Wuhan 430074, China; 2 Laboratory for Climate Studies, National Climate Center, China Meteorological Administration, Beijing 100081,China; 3 Hubei Meteorological Information and Technology Support Centre, Wuhan 430074, China; 4 Wuhan Institute of Heavy Rain, China Meteorological Administration, Wuhan 430074, China |
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| Abstract: | Seasonal and annual trends of mean, minimum and maximum temperature series in Wuhan meteorological station and four rural stations averaged from 1960 to 2005, from 1960 to 1982 and from 1983 to 2005, respectively, together with the trends of urban heat island intensity and its contribution rate were calculated. The main results are: 1) most of the temperature trends are positive, the warming rate of minimum temperature is higher than that of maximum temperature, the warming rate is high in winter than in summer, there is an apparent asymmetrical change; 2) the urban heat island effect has intensified during the last 46 years in Wuhan, the warming rates of mean, minimum and maximum temperatures are 0.235, 0.425 and 0.034℃/10a, and the contribution rates to the series are 60.4%, 67.7% and 21.8%, respectively; 3) the increases of the temperature and heat island intensity are mainly contributed by the rapid warming in the latest two decades.
Abstract: Seasonal and annual bias rates of mean，minimum and maximum temperature series in Wuhan meteorological station and 4 suburb stations averaged from 1960 to 2005, form 1960 to 1982, from 1983-2005, together with the bias rates of urban heat island intensity and its contribution rate are calculated. The main results are: 1)most of the temperature bias rates are positive, the warming rate of minimum temperature is higher than that of maximum temperature, the warming rate is high in winter than in summer, there is apparent asymmetric change; 2)the urban heat island effect has intensified in last 46 years, in Wuhan, the warming rate of mean, minimum and maximum temperature is 0.235, 0.425 and 0.034℃/10a, and the contribution rates to the series get 60.4%, 67.7% and 21.8% respectively; 3)the increasing of the temperature and heat island intensity in last 46 years is mainly contributed by the latest 23 years. The urban heat island effect is seriously included in the temperature series in Wuhan, moving the station is strongly suggested.
Key words: urban heat island intensity, maximum temperature, minimum temperature, asymmetric change |
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| Keywords: | urban heat island intensity maximum temperature minimum temperature asymmetrical change |
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