气候变化研究进展 ›› 2013, Vol. 9 ›› Issue (3): 199-203.doi: 10.3969/j.issn.1673-1719.2013.03.007

• 气候系统变化 • 上一篇    下一篇

1957—2010年石家庄城市闷热天气的影响因素分析

张国华1,2, 金晓青2, 关彦华3, 闫雪瑾2   

  1. 1中国气象局北京城市气象研究所
    2 河北省气象台
    3 河北省气象技术装备中心
  • 收稿日期:2012-10-25 修回日期:2013-04-02 出版日期:2013-05-30 发布日期:2013-05-30
  • 基金资助:

    城市气象科学研究基金

Sultry Weather in Shijiazhuang, China and the Influencing Factors During 1957-2010

Zhang Guohua1, 2, Jin Xiaoqing2, Guan Yanhua3, Yan Xuejin2   

  1. 1 Beijing Institute of Urban Meteorology, China Meteorological Administration
    2 Hebei Weather Observatory
    3 Hebei Meteorological Technology and Equipment Center
  • Received:2012-10-25 Revised:2013-04-02 Online:2013-05-30 Published:2013-05-30

摘要: 用石家庄站和同纬度城镇站(深州、晋州)1957—2010年的观测资料分析闷热日数、闷热指数的年代际变化和两站间的差异,以及14时气温、相对湿度和绝对湿度的年代际变化。结果表明:1957—2010年,石家庄的闷热天气呈增多趋势;城镇站则表现出多-少-多的双峰型演变。石家庄的闷热天气与14时气温的变化一致,闷热程度增强,气温起主要作用;深州的闷热天气与14时气温和湿度变化有关,且湿度起主要作用。受城市化的影响,石家庄的热岛效应自20世纪80年代末开始逐渐强于深州,干岛效应20世纪90年代中期以后明显加强。石家庄闷热天气主要由城市热岛效应和全球变暖引起,城市干岛效应引起的湿度下降抵消了一部分闷热天气发生的可能性。

关键词: 闷热指数, 城市干岛效应, 城市化

Abstract: Using the observational data of Shijiazhuang meteorological station and township stations (Shenzhou and Jinzhou) at the same latitude from 1957 to 2010, the inter-decadal variations of sultry days and sultriness indices and their differences between Shijiazhuang and township station were analyzed. In addition, the inter-decadal variations of temperature, relative humidity and absolute humidity at 14:00 BT in summer and sultry weather were also analyzed. The results show that during 1957-2010, sultry days in Shijiazhuang increased gradually, while the township station showed bimodal distribution. The variation of sultry days at Shijiazhuang was consistent with the variation of temperature at 14:00, which indicates that temperature plays a leading role in enhancing sultry level. The sultry days at Shenzhou were related to the temperature and humidity at 14:00, with major role in humidity. Under urbanization, urban heat island effect at Shijiazhuang was getting stronger than that at Shenzhou from the late 1980s, and the dry island effect was enhanced after the middle 1990s. The sultry days in Shijiazhuang were mainly affected by the urban heat island effect and global warming, while the drop of relative humidity due to the urban dry island effect had an adverse impact on the formation of sultry weather, which reduced part of the possibility of sultry weather.

Key words: sultriness index, urban dry island effect, urbanization

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