| 1961—2008年银川市灰霾天气的气候特征 |
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| 引用本文： | 刘玉兰,梁培,刘娟,桑建人.1961—2008年银川市灰霾天气的气候特征[J].辽宁气象,2012(1):55-58. |
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| 作者姓名： | 刘玉兰 梁培 刘娟 桑建人 |
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| 作者单位： | [1]宁夏回族自治区宁夏气象防灾减灾重点试验室,宁夏银川750002 [2]宁夏回族自治区气象服务中心,宁夏银川750002 [3]银川市气象局,宁夏银川750002 [4]宁夏回族自治区气候中心,宁夏银川750002 |
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| 基金项目： | 宁夏科技攻关项目“宁夏灰霾天气形成机理、预报预测及防治对策研究”资助 |
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| 摘 要： | 对1961—2008年银川市灰霾天气日数资料进行分析。结果表明：银川市灰霾天气呈逐渐增加的趋势2,0世纪80年代前为缓慢增加阶段,20世纪后灰霾天气显著增加2,000年后灰霾天气急剧增加。银川市灰霾日数最多为12月,其次为11月,最少为5月,呈现出冬季大于秋季大于春季大于夏季的季节特征。一般情况下,银川市灰霾日数持续1—3d,持续2d及以上的灰霾天气占17%,持续5d及以上的灰霾天气占1%。持续时间较长的灰霾天气集中出现在冬季11月至翌年2月。灰霾天气持续时间与年代际变化有关,2000年前,银川未出现持续5d以上的灰霾天气过程;2000年后,随着灰霾天气日数增多,灰霾持续时间延长。
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| 关 键 词： | 银川市 灰霾天气 气候特征 |
Climatic characteristics of haze weather from 1961 to 2008 in Yinchuan |
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| LIU Yu-lan,LIANG Pei LIU Juan SANG Jian-ren.Climatic characteristics of haze weather from 1961 to 2008 in Yinchuan[J].Liaoning Meteorological Quarterly,2012(1):55-58. |
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| Authors: | LIU Yu-lan LIANG Pei LIU Juan SANG Jian-ren |
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| Institution: | 1.Ningxia Key Laboratory of Meteorological Disaster Prevention and Reduction,Yinchuan 750002,China; 2.Ningxia Meteorological Services Center,Yinchuan 750002,China;3.Yinchuan Meteorological Service,Yinchuan 750002,China;4.Ningxia Climatic Center,Yinchuan 750002,China) |
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| Abstract: | Based on the observational data from 1961 to 2008 in Yinchuan,the days of haze weather were analyzed.The results indicate that the days of haze weather are in increasing trends.They increase slowly before 1980s,significantly after 1980s and sharply after 2000.The days of haze weather appear frequently in December,then in November,and least in May,namely,winter autumn spring summer.In general,the duration of haze weather is 1-3 days.17% haze weather could last 2 days or more,while 1% haze weather could last 5 days or more.The persistent haze weather concentrates from November to February.The haze weather duration is related to its annual change.The haze weather persisting 5 days or more never occurs before 2000 in Yinchuan,while the haze duration extends with the increase of haze days after 2000. |
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| Keywords: | Yinchuan Haze weather Climatic characteristics |
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