主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

气象与环境学报 ›› 2020, Vol. 36 ›› Issue (6): 82-90.doi: 10.3969/j.issn.1673-503X.2020.06.010

• 论文 • 上一篇    下一篇

2016—2017年冬春季海南3市气溶胶质量浓度特征对比分析

周宇1,3(),韩红星1,施晨晓2,3,邢俊1,孙立1   

  1. 1. 三沙市气象局, 海南 三沙 573199
    2. 海南省气象信息中心, 海南 海口 570203
    3. 海南省南海气象防灾减灾重点实验室, 海南 海口 570203
  • 收稿日期:2019-09-10 出版日期:2020-12-30 发布日期:2021-01-06
  • 作者简介:周宇, 男, 1989年生, 工程师, 主要从事中短期天气预报研究, E-mail:zhouyunuist@yeah.net
  • 基金资助:
    海南省气象局青年基金项目(HNQXQN201806)

Comparative analysis of aerosol mass concentration characteristics in winter and spring during 2016 to 2017 in three cities of Hainan province

Yu ZHOU1,3(),Hong-xing HAN1,Chen-xiao SHI2,3,Jun XING1,Li SUN1   

  1. 1. Sansha Meteorological Service, Sansha 510275, China
    2. Hainan Meteorological Information Center, Haikou 510275, China
    3. Key Laboratory of South China Sea Meteorological Disaster Prevention and Mitigation of Hainan Province, Haikou 510275, China
  • Received:2019-09-10 Online:2020-12-30 Published:2021-01-06

摘要:

利用2016年12月至2017年5月海南省3个地级市(三沙市永兴岛、三亚、海口)监测的PM2.5、PM10数据,对比分析其污染特征。结果表明:相较于海口、三亚,永兴岛空气质量最好,细粒子污染程度最轻且PM2.5、PM10质量浓度日变化最平稳,其主要原因是人类生产活动对空气质量的影响不大。进一步通过分析3个站点的PM2.5质量浓度与近地面气象要素(相对湿度、月总降水量、能见度)发现,永兴岛PM2.5质量浓度与能见度整体呈负相关,永兴岛在不同风速、风向上的PM2.5质量浓度最小,三亚次之,海口最大。永兴岛PM2.5的大值区主要出现在东北风向上,其他方向上的气流则相对比较清洁,且在静风或者微风条件下,永兴岛的初始PM2.5质量浓度比较低。通过每天逐6 h的72 h后向轨迹分析发现,冬季、夏季风影响期间,永兴岛分别受来源于西太平洋、南海的海洋性气流影响,这与永兴岛的空气质量有直接关系。

关键词: 颗粒物, 气象要素, 空气质量

Abstract:

Based on comparative analysis of the monitoring data of PM2.5 and PM10 of three cities from Hainan province (Yongxing Island, Sanya and Haikou) from December of 2016 to May of 2017, the pollution characteristics in Yongxing Island were analyzed.The results show that, compared with Haikou and Sanya, Yongxing Island has the best air quality, the lightest fine particle pollution and the most stable daily variation of PM2.5 and PM10 mass concentrations.The main reason is that human production activities have little impact on air quality.Through further analysis of PM2.5 mass concentrations of the three stations and near-surface meteorological elements (relative humidity, total monthly precipitation and visibility), it is found that the PM2.5 mass concentration of Yongxing Island is negatively correlated with visibility as a whole, and the PM2.5 mass concentration of Yongxing Island is the lowest at different wind speeds and winds, followed by Sanya and Haikou.The large PM2.5 concentration area of Yongxing Island mainly appears in the upward direction of the northeast wind, while the air flow in the other directions is relatively clean.Moreover, the initial PM2.5 mass concentration of Yongxing Island is relatively low under the conditions of calm wind or light wind.By analyzing the 72-hour backward trajectory six hours a day, it is found that during the winter and summer monsoon, Yongxing Island is respectively affected by the Marine air currents originating from the western Pacific Ocean and the South China Sea, which are directly related to the air quality of Yongxing Island.

Key words: Particulate matter, Meteorological elements, Air quality

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