基于Pandora 观测的OMI 全球臭氧产品精度验证

大气与环境光学学报 ›› 2022, Vol. 17 ›› Issue (6): 640-654.

• “新型卫星载荷大气遥感及应用” 专辑 • 上一篇下一篇

基于Pandora 观测的OMI 全球臭氧产品精度验证

汪可1;2, 李正强2∗, 李凯涛2∗, 许华2, 侯梦雨1;2, 王博林2;3

1 安徽师范大学地理与旅游学院, 安徽芜湖241003; 2 中国科学院空天信息创新研究院, 北京100101; 3 中国科学院大学, 北京100049

收稿日期:2021-12-13 修回日期:2022-02-24 出版日期:2022-11-28 发布日期:2022-12-14
通讯作者: E-mail: lizq@radi.ac.cn; likt@radi.ac.cn E-mail:lizq@aircas.ac.cn
作者简介:汪可(1998 - ), 安徽安庆人, 硕士研究生, 主要从事地基观测方面的研究。E-mail: kewang@ahnu.edu.cn
基金资助:
Supported by Hainan Provincial Key R&D Science and Technology Cooperation Project (海南省重点研发科技合作方向项目, ZDYF2020206), National Outstanding Young Scientists Fund (国家杰出青年科学基金, 41925019), National Natural Science Foundation of China (国家自然科学基金, 42175146)

Accuracy verification of OMI global ozone products based on Pandora observations

WANG Ke1;2, LI Zhengqiang2∗, LI Kaitao2∗, XU Hua2, HOU Mengyu1;2, WANG Bolin2;3

1 College of Geography and Tourism Anhui Normal University, Wuhu 241003, China; 2 Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100101, China; 3 Chinese Academy of Sciences University, Beijing 100049, China

Received:2021-12-13 Revised:2022-02-24 Published:2022-11-28 Online:2022-12-14
Contact: Zheng-Qiang Li E-mail:lizq@aircas.ac.cn

摘要/Abstract

摘要： 臭氧是大气中一种重要的微量气体, 是影响对流层与平流层大气运动的重要成分之一, 臭氧的高精度探测对于环境和气候具有重要的意义。OMI 传感器是目前具备探测全球臭氧含量的主要遥感传感器之一。利用地基 Pandora 观测网全球范围内44 个臭氧观测站点数据对OMI 卫星数据产品进行了精度验证。结果表明: OMI 臭氧产品与Pandora 地基测量结果之间具有很好的线性相关性, 相关系数达到0.948, 但精度结果存在区域差异。在南半球地区, 相关系数为0.915; 在北半球低纬度地区, 其相关系数为0.932, 中纬度地区相关系数为0.948, 而在高纬度地区, 相关系数达到了0.957。此外, 验证精度还与臭氧柱总量存在相关性, 在臭氧柱总量低于220 Du (对应臭氧空洞条件) 时, OMI 卫星产品存在高估现象, 高估约13%; 而在臭氧柱总量高于400 Du 时, OMI 的臭氧产品低于Pandora 地基测量结果, 且随着臭氧柱总量增加, 低估情况也越严重, 在臭氧柱总量达到500 Du 时, OMI 臭氧产品低估约4%。

关键词: 地基验证, 臭氧分布, 相对误差, Pandora 太阳光度计

Abstract: As an important trace gas in the atmosphere, ozone is one of the important components that affect the movement of the atmosphere in the troposphere and stratosphere. The high-precision detection of ozone is of great significance to the environment and climate, and OMI sensor is currently one of the main remote sensing sensors capable of detecting global ozone levels. In this paper, the accuracy of OMI satellite data products is verified by using the data of 44 ozone observation stations around the world of the ground-based Pandora observation network. The results show that there is a good linear correlation between OMI ozone products and Pandora ground measurement results, with the correlation coefficient reaching 0.946. However, there are regional differences in the accuracy results. In the southern hemisphere, the correlation coefficient is 0.894. While in the northern hemisphere low latitudes, the correlation coefficient is 0.931, in the middle latitudes, the correlation coefficient is 0.951, and in the high latitudes, the correlation coefficient reaches 0.957. In addition, the verification accuracy is also related to the total ozone column. When the total ozone column is less than 220 Du (corresponding to the ozone hole condition), OMI satellite product is overestimated by about 13%. Above 400 Du, OMI′s ozone product is lower than Pandora′s ground-based measurement. And as the total ozone column increases, the underestimation becomes more serious. When the total ozone column reaches 500 Du, OMI′s ozone product is underestimated by about 4%.

Key words: ground-based verification, ozone distribution, relative error, Pandora sun photometer

中图分类号:

P407

汪可, 李正强∗, 李凯涛∗, 许华, 侯梦雨, 王博林, . 基于Pandora 观测的OMI 全球臭氧产品精度验证[J]. 大气与环境光学学报, 2022, 17(6): 640-654.

WANG Ke, LI Zhengqiang∗, LI Kaitao∗, XU Hua, HOU Mengyu, WANG Bolin, . Accuracy verification of OMI global ozone products based on Pandora observations[J]. Journal of Atmospheric and Environmental Optics, 2022, 17(6): 640-654.

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基于Pandora 观测的OMI 全球臭氧产品精度验证

Accuracy verification of OMI global ozone products based on Pandora observations

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