| 摘要: |
| 选取2006—2015年近10 a遵义市14个国家气象站观测资料，分析统计了大雾天气的时空分布，雾日的季节和月频率分布以及区域性大雾年际变化；并通过2015—2017年遵义市市区空气质量指数资料和能见度等地面气象资料，浅析其时间变化特征。结果表明：遵义大雾区主要有西部河谷大雾区、中部偏南大雾区、东部大雾区、北部雾区等4个。遵义市12月—次年1月出现的雾日最多，6—8月出现最少。近10 a区域性大雾天气次数随着年代的增加，总体呈现逐年减少的趋势。遵义秋冬季节空气质量状况不佳，空气中污染颗粒物较多，此时较高的相对湿度有助于形成能见度较差的天气。 |
| 关键词: 遵义大雾；时空分布；空气质量指数(AQI) |
| DOI： |
| 投稿时间：2019-09-06 |
| 基金项目:气科合QN[2017]13号:遵义地区大雾天气的时空分布与变化 |
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| On Spatial-temporal Distribution of Fog in Recent Ten Years and the Relation between Visibility and AQI in Northern Guizhou |
| TANG Hai,ZHANG Yunqiu,CHEN Qianqian,TIAN Duan,HUANG Junshu |
| (Zunyi Meteorological Bureau of Guizhou, Zunyi 563000 , China;Shanglin Meteorological Bureau of Guixi, Shanglin 530500 , China) |
| Abstract: |
| Fog temporal and spatial distribution, and its seasonal and monthly frequency distribution as well as the inter-annual variation were analyzed based on the observation data of 14 national meteorological stations in Zunyi City from 2006 to 2015. The time variation characteristics of fog were also analyzed according to the ground meteorological data such as air quality index and visibility from 2015 to 2017. The results show that areas of the western river valley, the mid-south, the east and the north are the major fog areas. The fog days occur most from December to January of next year and are the least from June to August. In recent ten years, the regional fog has decreased yearly. In the autumn and winter, the air quality is poor due to many pollutants in the air. Hence the high relative humidity causes low visibility. |
| Key words: fog in Zunyi；spatial and temporal distribution；AQI |
