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最近40年中国雾日数和霾日数的气候变化特征
引用本文:孙彧,马振峰,牛涛,付如友,胡俊峰.最近40年中国雾日数和霾日数的气候变化特征[J].气候与环境研究,2013,18(3):397-406.
作者姓名:孙彧  马振峰  牛涛  付如友  胡俊峰
作者单位:1. 成都信息工程学院,成都,610103
2. 四川省气候中心,成都,610072
3. 中国气象科学研究院,北京,100081
4. 四川省茂县气象局,茂县,623200
5. 西南空管局气象中心,成都,610072
基金项目:国家重点基础研究发展计划项目2011CB403404;自然科学基金40875077;气象公益性行业专项 GYHY201106050-02、GYHY201206011-1
摘    要:根据1971~2010年567个中国地面观测站点的雾日数和霾日数资料,分析了我国雾日数和霾日数的空间分布、季节变化以及年代际变化特征,并且利用REOF(旋转经验函数正交)分解对雾日数进行气候区划。结果表明:(1)雾主要分布在东南沿海地区、四川盆地地区、湘黔交界、山东沿海以及云南南部等地区。霾主要集中于华北、河南以及珠三角和长三角地区。(2)在季节变化上:秋、冬季雾和霾的分布大于春夏。(3)雾日数和霾日数年代际变化明显,雾日数在20世纪70至90年代较多,20世纪90年代以后减少;霾日数自2001年以来急剧增长。(4)雾日数可以共可分为10个区,其中华北区、川渝区以及长江中下游区是雾出现频率较高的几个重点区域。

关 键 词:雾日数  霾日数  时空分布  分区
收稿时间:2012/10/17 0:00:00
修稿时间:2013/2/27 0:00:00

Characteristics of Climate Change with Respect to Fog Days and Haze Days in China in the Past 40 Years
SUN Yu,MA Zhenfeng,NIU Tao,FU Ruyou and HU Junfeng.Characteristics of Climate Change with Respect to Fog Days and Haze Days in China in the Past 40 Years[J].Climatic and Environmental Research,2013,18(3):397-406.
Authors:SUN Yu  MA Zhenfeng  NIU Tao  FU Ruyou and HU Junfeng
Institution:Chengdu University of Information Technology, Chengdu 610103;Sichuan Climate Center, Chengdu 610072;Chinese Academy of Meteorological Sciences, Beijing 100081;Maoxian Meteorological Bureau of Sichuan Province, Maoxian 623200;Meteorological Center of Southwest Air Traffic Management Bureau, Chengdu 610072
Abstract:Using observed fog and haze data from 567 stations during 1971-2010 in China, the general distribution and the seasonal and decadal variations of fog days and haze days were demonstrated. A rotated empirical orthogonal function was used to classify the fog days in China according to climate. The results show that: (1) Fog days were distributed mainly over the southeastern coastal area, the Sichuan Basin, the border between Hunan and Guizhou, the Shandong coastal area, and southern Yunnan. Haze days were concentrated over North China, Henan, the Pearl River Delta, and the Yangtze River Delta area. (2) Seasonal variations appeared: The numbers of fog days and haze days in autumn and winter are larger than those in spring and summer. (3) Fog days and haze days in China exhibit obvious decadal variations. There are more fog days from the 1970s to the 1990s, and fewer from the 1990s to 2010. The yearly variation trend of haze days was ascending rapidly from 2001. (4) The entire area of China can be divided into 10 parts. The north China, Sichuan, Chongqing, and the middle and lower reaches of the Yangtze River areas are major fog regions.
Keywords:Fog days  Haze days  Spatial and temporal distribution  Regionalization
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