极地研究

极地研究 ›› 2026, Vol. 38 ›› Issue (3): 342-354.DOI: 10.13679/j.jdyj.20240104

所属学科：极地遥感与测绘

• 研究论文 • 上一篇    下一篇

南极FY-3C/TOU臭氧总量产品精度验证

赵怡曦1,2  田彪1,3  郑向东1  杨堤益4  邹小伟5  于亦宁1  王欣1  丁明虎1,6   

  1. 1中国气象科学研究院, 灾害天气科学与技术全国重点实验室, 北京 100081;
    2中国科学院大学地球与行星科学学院, 北京 101408;
    3北京大学地球与空间科学学院, 北京 100871;
    4海宁市气象局, 浙江 嘉兴 314400;
    5武汉大学测绘学院, 湖北 武汉 430072;
    6复旦大学, 极地海-冰-气系统与天气气候教育部重点实验室, 上海 200438
  • 收稿日期:2024-12-30 修回日期:2025-05-27 出版日期:2026-09-30 发布日期:2026-10-22
  • 通讯作者: 田彪
  • 基金资助:
    国家重点研发计划项目(2021YFC2802504)、国家自然科学基金青年科学基金项目(42201151)和中国气象科学研究院基本科研业务费(2023Z004, 2023Z015)资助

Verification of the FY-3C/TOU total ozone column product in Antarctica

ZHAO Yixi1,2, TIAN Biao1,3, ZHENG Xiangdong1, YANG Diyi4, ZOU Xiaowei5, YU Yining1, WANG Xin1, DING Minghu1,6   

  1. 1State Key Laboratory of Disaster Weather Science and Technology, Chinese Academy of Meteorological Sciences, Beijing 100081, China;
    2College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 101408, China;
    3School of Earth and Space Sciences, Peking University, Beijing 100871, China;
    4Haining Meteorological Bureau, Jiaxing 314400, China;
    5School of Geodesy and Geomatics, Wuhan University, Wuhan 430072, China;
    6Key Laboratory of Polar Atmosphere-ocean-ice System for Weather and Climate, Ministry of Education, Fudan University, Shanghai 200438, China
  • Received:2024-12-30 Revised:2025-05-27 Online:2026-09-30 Published:2026-10-22

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摘要： 中国FY-3系列极轨气象卫星紫外臭氧总量探测仪(FY-3C/TOU)太阳辐照度观测异常, 其臭氧总量(total ozone column, TOC)产品在南极的适用性有待评估。本文基于南极6个站点的地基观测数据, 评估了2015年1月—2019年12月FY-3C/TOU TOC产品的精度, 并将其与Aura卫星臭氧监测仪Aura/OMI TOC产品进行对比, 探讨了影响TOU TOC相对偏差的因素与订正方法。结果表明, TOU TOC产品在11月至次年1月于中山(ZOS)、昭和(SYO)、马兰比奥(MBI)和迪蒙·迪维尔(DDU)4个站点的相对偏差高达–37.19%~–21.19%; 在哈雷(HBA)和南极点(SPO)站, 各偏差指标全年相对较小, 相关系数在0.940以上。各站点OMI TOC的相对偏差为–3%~2%, 可作为TOU TOC精度评估的对比参照。太阳天顶角对TOU TOC相对偏差的影响主要体现在70°以下; 地基TOC的影响在ZOS、SYO和DDU三站呈“W”型变化, 低谷出现在190~250 DU和310~340 DU; 辐射云量和气溶胶指数无显著变化趋势。基于K折交叉验证法提出了TOU TOC分时段线性订正方法, 订正后其相关系数提升至0.874以上。本研究有助于明确FY-3C/TOU在南极的监测能力, 明确其存在的问题和可行的订正方案。

关键词: FY-3C/TOU, Aura/OMI, 南极臭氧总量, 精度验证, 线性订正

Abstract:

Owing to anomalies in the solar irradiance measurements of the FY-3C/TOU (Total Ozone Unit), the applicability of its total ozone column (TOC) products in Antarctica remains to be evaluated. This study evaluated the accuracy of FY-3C/TOU TOC products in combination with ground-based measurements at six Antarctic stations from January 2015 to December 2019 and compared them with Aura/OMI (Ozone Monitoring Instrument) TOC products. The factors influencing the relative differences in TOU TOC were investigated, existing problems analyzed, and a correction method proposed. Results showed that TOU TOC exhibits substantial underestimation during November–January, with relative differences ranging from −37.19% to −21.19% at Zhongshan (ZOS), Syowa (SYO), Marambio (MBI), and Dumont d’Urville (DDU) stations. In contrast, deviation metrics at the Halley (HBA) and South Pole (SPO) stations were relatively small throughout the year, with correlation coefficients above 0.940. The relative difference in OMI TOC at each station ranged from −3% to 2%, making it a reliable reference for evaluating the accuracy of TOU TOC products. The influence of the solar zenith angle (SZA) on the relative difference in TOU TOC was identified mainly when the SZA is below 70°. The influence of ground-based TOC on the relative difference in TOU TOC exhibited a W-type pattern at the ZOS, SYO, and DDU stations, with low points occurring in the ranges of 190~250 and 310~340 DU. No notable trends were observed for radiative cloud fraction and aerosol index. Based on the K-fold cross-validation method, a time-segmented linear correction method is proposed for TOU TOC, which improves the correlation coefficients to above 0.874. This study clarified the monitoring capability of FY-3C/TOU in the Antarctic region, identified current problems, and proposed an effective correction strategy.


Key words: FY-3C/TOU, Aura/OMI, Antarctic total ozone column, accuracy verification, linear correction