主办单位：中国气象局沈阳大气环境研究所
国际刊号：ISSN 1673-503X
国内刊号：CN 21-1531/P
气象与环境学报

气象与环境学报 ›› 2016, Vol. 32 ›› Issue (6): 69-76.doi: 10.3969/j.issn.1673-503X.2016.06.009

• 论文 • 上一篇    下一篇

鞍山地区大雾天气气候特征及成因探讨

金巍1,2, 曲姝霖3, 王业修1, 沈玉敏4, 戴萍5, 郜凌云5, 曲岩1, 原久淞6   

  1. 1. 鞍山市气象局, 辽宁 鞍山 114004;
    2. 中国气象科学研究院国家重点灾害性实验室, 北京 100081;
    3. 兰州大学大气科学学院, 甘肃 兰州 730000;
    4. 沈阳区域气候中心, 辽宁 沈阳 110166;
    5. 辽宁省气象信息中心, 辽宁 沈阳 110166;
    6. 营口市气象局, 辽宁 营口 115001
  • 收稿日期:2016-04-08 修回日期:2016-10-20 出版日期:2016-12-31 发布日期:2016-12-31
  • 作者简介:金巍,女,1968年生,正研级高级工程师,主要从事短期天气预报和强对流天气研究,E-mail:lnyk_jw@163.com。
  • 基金资助:
    灾害天气国家重点实验室开放课题“辽宁持续性冰雹天气分析和研究”（2012LASW-B8）、国家973项目（2012CB957800）和环渤海区域科技协同创新基金项目“黄渤海雷暴大风监测及预警指标研究”（QYXM201502）共同资助。

Climatic characteristics and causes of heavy fog in Anshan area

JIN Wei1,2, QU Shu-lin3, WANG Ye-xiu1, SHEN Yu-min4, DAI Ping5, GAO Ling-yun5, QU Yan1, YUAN Jiu-song6   

  1. 1. Anshan Meteorological Service, Anshan 114004, China;
    2. State Key Disaster Laboratory, Chinese Academy of Meteorological Sciences, Beijing 100081, China;
    3. College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China;
    4. Shenyang Regional Climate Center, Shenyang 110166, China;
    5. Liaoning Meteorological Information Center, Shenyang 110166, China
  • Received:2016-04-08 Revised:2016-10-20 Online:2016-12-31 Published:2016-12-31

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摘要： 利用1951-2014年鞍山地区大雾天气观测资料，采用线性趋势法和多项式趋势法分析了鞍山地区大雾天气的空间及时间变化特征。结果表明：1951-2014年鞍山地区年和季大雾日数呈东南部地区多、西北部和中部地区少的空间分布特征，同时各区域大雾日数的季节变化差异显著，东南部山区夏季和秋季(6-10月)为大雾多发季，其他地区深秋和冬季(11月至翌年1月)为大雾多发季；鞍山市各区域大雾日数趋势变化的差异较大，中部地区大雾日数呈减少的趋势，西部地区大雾日数呈弱增加的趋势，东南部地区大雾日数呈增加的趋势。近64 a鞍山地区区域性大雾过程最长持续时间为7 d，全区性大雾过程较少，一致性大雾过程仅出现8次；鞍山地区大雾天气受地形影响较大，具有明显的区域特征，平原地区大雾天气少、山区大雾天气多，且山区连续性大雾过程持续时间较长。鞍山地区大雾过程持续时间多集中在1-2 h，大雾天气出现时间主要集中在05-06时、08时和20时前后，大雾过程日最长持续时间为20-21 h。在1961-2010年鞍山地区大雾日数的年代际变化中，东南部山区大雾日数呈增加的趋势，中部地区大雾日数呈减少的趋势；特别是20世纪90年代以后，中部地区大雾日数减少明显，东南部地区大雾日数增加显著，区域性差异较大。同时，人类活动对气候环境的反馈影响可能也是鞍山地区大雾天气变化的一个原因。

关键词: 大雾, 地形, 区域性, 人类活动

Abstract: Based on the observational data of heavy fog in Anshan area from 1951 to 2014,the spatial and temporal characteristics of heavy fog were analyzed using a linear trend method and a polynomial trend method.The results show that the annual and seasonal numbers of fog days from 1951 to 2014 are larger in the southeastern region of Anshan,but smaller in the northwestern and central regions.The heavy fog days in different regions have different seasonal variations.Heavy fog events occur frequently in summer and autumn (from June to October) in the southeastern mountainous region,while they occur mostly in late autumn and winter (from November to January) in the other regions.Heavy fog days have a decreasing trend in the central region of Anshan,a weakly increasing trend in the western region,and a clear increasing trend in the southeastern region.The longest duration time of regional heavy fog events in Anshan is 7 d.It is seldom to have a heavy fog occurring in the whole region.Such events occurred only eight times from the record.The heavy fog events in Anshan show distinct regional feature due to the topographic effect.It seldom occurs in the plain regions,but frequently appears in mountainous regions and lasts longer.The duration time of heavy fog events in Anshan is about 1-2 h,and their starting time is usually around 05:00-06:00,08:00,and 20:00,mostly lasting for 20-21 h.Due to the inter-decadal variability of heave fog days in Anshan from 1961 to 2010,the number of fog days increases in the southeastern mountainous region and decreases in the central region.Since 1990s,it has decreased significantly in the central region,but increased in the northeastern region,which shows great regional difference.Meanwhile,the feedback of human activities to climate and environment is probably another reason for the variation of heavy fogs in Anshan.

Key words: Heavy fog, Topography, Regional feature, Human activity

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