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[1]周 聪,王维佳,苗红妍,等.成都平原经济区空气污染扩散气象条件变化特征分析[J].成都信息工程大学学报,2021,36(04):472-478.[doi:10.16836/j.cnki.jcuit.2021.04.018]
　ZHOU Cong,WANG Weijia,MIAO Hongyan,et al.Analysis on Variation Characteristics of Meteorological Conditions of Air Pollution Diffusion in the Economic Zone of Chengdu Plain[J].Journal of Chengdu University of Information Technology,2021,36(04):472-478.[doi:10.16836/j.cnki.jcuit.2021.04.018]
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成都平原经济区空气污染扩散气象条件变化特征分析

成都信息工程大学学报[ISSN:1006-6977/CN:61-1281/TN] 卷: 36 期数: 2021年04期 页码: 472-478 栏目: 大气科学 出版日期: 2021-09-20
Title:
Analysis on Variation Characteristics of Meteorological Conditions of Air Pollution Diffusion in the Economic Zone of Chengdu Plain
文章编号:
2096-1618(2021)04-0472-07
作者:
周 聪1; 2;  王维佳1; 2;  苗红妍3;  孙 彧4
(1.成都市气象局,四川 成都 611133; 2.中国气象局云雾物理环境重点研究室,北京 100081; 3.中国气象局气象干部培训学院辽宁分院,辽宁 沈阳 110166; 4.四川省气象灾害防御技术中心,四川 成都 610072)
Author(s):
ZHOU Cong1; 2;  WANG Weijia1; 2;  MIAO Hongyan3;  SUN Yu4
(1.Chengdu Meteorological Bureau,Chengdu 611133,China; 2.Key Laboratory for Cloud Physics of China Meteorological Administration, Beijing 100081,China; 3.Meteorological Administration Training Center Liaoning Branch, Shenyang 110166,China; 4.Sichuan Meteorological Disaster Prevention Technology Center, Chengdu 610072,China)
关键词:
大气环境;  气象条件;  时空分布特征;  趋势检验
Keywords:
atmospheric environment;  meteorological conditions;  temporal and spatial variation characteristics;  trend test
分类号:
P421
DOI:
10.16836/j.cnki.jcuit.2021.04.018
文献标志码:
A
摘要:
为更好地分析成都平原经济区空气污染扩散气象条件的变化趋势,利用1981-2018年53个国家级地面气象台站观测资料,并主要采用非参数检验方法着重对降水量、风场等气象条件的时空分布特征进行讨论和分析。结果表明:1981-2018年,经济区内降水量与相对湿度具有相似的空间分布特征,且随时间的演变均表现出减少的变化趋势,其中夏季降水的显著下降是引起年累积降水量减少的重要原因; 近地面风场方面,除雅安西南部,其余地区的小风频次均表现出上升趋势,其中西北边缘地区的变化幅度较大。总体而言,1981-2018年区域内空气污染扩散气象条件是逐步转差的,尤其以中部地区的表现最为显著。
Abstract:
In order to better analyze the variation trends of meteorological conditions of air pollution diffusion in the Economic Zone of Chengdu Plain, observational data of 53 ground weather stations from 1981 to 2018 are used and the Mann Kendall trend test is mainly used to discuss and analyze the temporal and spatial variation characteristics of meteorological conditions such as rainfall, wind and so on. The results show that, from 1981 to 2018, the spatial distribution characteristics of cumulative annual precipitation amounts and daily average relative humidity were almost the same and they both showed downward trends, and the significant downward trend of summer precipitation is the important factor which leading to the decrease of cumulative annual precipitation. Moreover, in the aspect of near-surface wind-fields, excepting southwest of Ya’an, the frequencies of small wind show upward trends, and the magnitude of the upward trend in northwest marginal areas is more obvious. Overall, the meteorological conditions of air pollution diffusion in the Economic Zone of Chengdu Plain are becoming worse from 1981 to 2018, especially the situation of central region is of the most significant.

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备注/Memo

收稿日期:2020-08-28
基金项目:四川省科技计划资助项目(2019YJ0621); 中国气象局云雾物理环境重点开放实验室开放课题资助项目(2019Z01602); 四川省气象局青年基金课题资助项目(SCQXKJQN2019020)

更新日期/Last Update: 2021-09-20