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城市化进程对重庆夏季高温炎热天气的影响

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  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
  • 维普
利用重庆17站观测资料和NCEP/NCAR再分析资料,研究了城市化进程对重庆夏季高温炎热天气的影响.结果表明:随着城市化进程的加快,城区代表站沙坪坝高温和炎热日数呈减少趋势,与邻近的郊区呈现出明显差异.进一步分析其可能原因,沙坪坝日最高气温升温较郊区缓慢,相对湿度增加,均呈现较为显著的城市化效应,说明沙坪坝夏季高温和炎热日数与邻近郊区明显趋势不同的主要原因是由于城郊最高气温的变化差异.相关分析表明,随着城市化进程的加快,主城区炎热日数的变化与郊区的差异逐渐增大,也说明沙坪坝炎热日数的减少不是大尺度的区域气候变化造成的,而是城市化进程加快导致的.利用OMR方法分析了重庆都市圈观测气温与NNR气温的差异,城市化进程加快对平均气温和最低气温是增温影响,且以最低气温的影响较为明显,同时对最高气温的影响则为降温效果.
Influences of Urbanization Speed on the Summer High Temperature and Sultry Weather in Chongqing
Daily meteorological observation data of 17 stations of Chongqing and NCEP/NCAR reanalysis data are employed to diagnose the influence of urbanization on the summer high temperature and sultry weather in Chongqing.Results show that high temperature days and hot days at Shapingba Station decrease with the rapidly accelerating of urbanization.Maximum temperature decrease is the main reason for the decrease of high temperature days and hot days.Correlation analysis indicates that the difference of hot days between the main urban zone and suburbs increases gradually,which indicates the decrease of high temperature days and hot days at Shapingba Station is caused by the rapidly accelerating of urbanization,not by the regional climate changes.Observation Minus Reanalysis (OMR) method is used to analyze the difference between observed temperature and NCEP/NCAR reanalysis (NNR) temperature.So,we found that along with the rapidly accelerating of urbanization,mean temperature and minimum temperature increase,especially for minimum temperature,but maximum temperature decreases.

urbanizationChongqingsummerhigh temperature and sultry weatherobservation minus reanalysis (OMR) method

白莹莹、程炳岩、王勇、张焱、向波、唐晓萍

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重庆市气候中心,重庆401147

重庆市气象台,重庆401147

重庆沙坪坝区气象局,重庆400030

城市化进程 重庆 夏季 高温炎热 OMR方法

中国气象局气候变化专项重庆市自然科学基金计划项目重庆市自然科学基金计划项目重庆市科委应用开发重点项目中国气象局成都高原所开放基金重庆气象局青年基金

CCSF201337CSTC2010BB7335CSTC2012JJA20015和CSTC2013jcyjA20010CSTC2013yykfB00003LPM2012001QNJJ201206

2015

10.7519/j.issn.1000-0526.2015.03.007

气象
国家气象中心

气象

CSTPCDCSCD北大核心
影响因子：2.337
ISSN：1000-0526
年,卷(期)：2015.41(3)
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