大气与环境光学学报 ›› 2024, Vol. 19 ›› Issue (1): 85-97.doi: 10.3969/j.issn.1673-6141.2024.01.007

• 光学遥感 • 上一篇    下一篇

基于OMI及地面监测的贵州省污染气体浓度时空差异研究

谷晓平 1, 李光一 1*, 陈远航 2, 廖瑶 1   

  1. 1 贵州省生态气象和卫星遥感中心, 贵州 贵阳 550002; 2 贵州楚云环保科技有限公司, 贵州 贵阳 550081
  • 收稿日期:2022-05-11 修回日期:2022-07-20 出版日期:2023-11-28 发布日期:2024-02-06
  • 通讯作者: E-mail: 849157067@qq.com E-mail:lgy_guangyi@163.com
  • 作者简介:谷晓平(1968- ), 女, 贵州贵阳人, 博士, 正高级工程师, 主要从事生态遥感方面的研究。E-mail: 16114331@qq.com
  • 基金资助:
    贵州省高层次创新型人才 (百层次人才) (黔科合平台人才 [2016] 4026), 山地生态气象遥感应用系统 (FY-3(03)-AS-12.13), 贵州省科技 计划项目 (黔科合基础-ZK [2022] 一般 273, 黔科合基础-ZK [2021] 一般 193)

Temporal-spatial difference of pollutant gases in Guizhou Province based on OMI and ground data

GU Xiaoping 1, LI Guangyi 1*, CHEN Yuanhang 2, LIAO Yao 1   

  1. 1 Guizhou Ecological Meteorology & Satellite Remote Sensing Center, Guiyang 550002, China; 2 Guizhou Chuyun Environmental Protection Technology Co., Ltd, Guiyang 550081, China
  • Received:2022-05-11 Revised:2022-07-20 Online:2023-11-28 Published:2024-02-06

摘要: 贵州省属于典型的喀斯特山区, 受地势和气候影响, 省内不同区域污染气体浓度具有明显的时空差异。因 此, 利用交互式数据语言 (IDL) + 遥感图像处理平台ENVI、地理信息系统软件ArcGIS 等, 基于臭氧层监测仪 (OMI) 的L3 V003 柱浓度数据和地面环境监测站数据, 从时间和空间两个方面在区域尺度上评估分析了贵州省3 种主要污染 气体的浓度变化差异和时空演变特征。结果表明: (1) 2019 年, 贵州省二氧化氮 (NO2)、二氧化硫 (SO2)、臭氧 (O3) 柱浓 度较2005 年呈下降趋势, 且两种方法监测的NO2、SO2季节特征均表现为“秋冬高、春夏低”, 受太阳辐射和天气过程影 响, 两种方法监测的O3均表现为“春夏高、秋冬低”的季节特征; (2) 对比分析表明, 遥感方法反演的NO2柱浓度极大值 和SO2柱浓度极小值较地面监测结果在时间上存在滞后性, 但滞后时间较短, 没有出现跨季节差异, 总体上空间差异 性大于时间差异性, 且SO2夏季空间差异性大于冬季; (3) 自然界平流层中含有大量臭氧, 且夏季贵州雷雨天气较多, 在天气过程发生时, 高层氧气极易被大量分解并生成O3, 由于大气垂直输送较为活跃, 使得平流层O3稳定性降低, 对 近地面浓度影响较大, 因此遥感反演的O3浓度与地面监测结果在时间和空间上均有明显差异性。

关键词: 臭氧层监测仪, 地面监测, 污染气体, 时空差异, 遥感

Abstract: Guizhou Province of China belongs to a typical karst mountainous area, and due to the influence of terrain and climate, there are obvious spatial and temporal differences in the concentration of polluting gases in different regions of the province. Therefore, based on L3 V003 column amount data from the Ozone Monitoring Instrument (OMI) and the ground environmental monitoring station data, the spatiotemporal differences in the concentration changes and the spatiotemporal evolution characteristics of the three main pollutants in Guizhou Province were analyzed and evaluated at the regional scale, using interactive data language (IDL) plus the remote sensing image processing platform ENVI, geographic information system software ArcGIS, etc. The results show that: (1) The NO2, SO2 and O3 column amount in Guizhou Province in 2019 show a downward trend compared to 2005. The seasonal characteristics of NO2 and SO2 concentration monitored by the two methods both show high in autumn and winter, and low in spring and summer. While due to the influence of solar radiation and weather processes, O3 concentration monitored by the two methods show the same seasonal characteristics of "high in spring and summer, low in autumn and winter". (2) Both the maximum NO2 column amount and the minimum SO2 column amount monitored by remote sensing have a lag in time campared to ground monitoring results, but the lag time is short and there is no cross seasonal difference. Overall, their spatial differences are greater than temporal differences, and the spatial differences of SO2 concentration in summer are greater than in winter. (3) The stratosphere contains a lot of ozone in nature, and there are more thunderstorms in Guizhou Province in summer, so when the weather process occurs, oxygen in the high atmosphere is easily decomposed to generate O3 in large quantities. Due to the active vertical atmospheric transport, the stability of stratospheric O3 is reduced, which has a greater impact on the near-surface O3 concentration.Therefore, the O3 column amount monitored by remote sensing and the ground monitoring results are significantly different in time and space.

Key words: ozone monitoring instrument, ground monitoring, polluted gas, spatio-temporal difference; remote sensing

中图分类号: