利用臭氧探空数据评估卫星及再分析资料在粤港澳地区的适用性

龚宇; 李婷苑; 沈劲; 陈靖扬

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中国环境科学 ›› 2025, Vol. 45 ›› Issue (4) : 1858-1868.

大气污染与控制

利用臭氧探空数据评估卫星及再分析资料在粤港澳地区的适用性

龚宇^1,2, 李婷苑^1,2, 沈劲³, 陈靖扬^1,2

作者信息 +

Assess the applicability of satellite and reanalysis data in Guangdong-Hongkong-Macao regions based on ozonesonde measurements

GONG Yu^1,2, LI Ting-yuan^1,2, SHEN Jin³, CHEN Jing-yang^1,2

Author information +

文章历史 +

摘要

基于2022~2023年粤港澳地区臭氧(O₃)探空观测资料,分析O₃浓度垂直分布特征变化趋势,并结合自组织映射神经网络(SOM)分型方法,评估了Aqua卫星大气红外探测器(AIRS) O₃垂直廓线产品以及ERA5再分析资料的O₃垂直廓线产品在粤港澳地区的适用性.结果表明:①粤港澳地区O₃垂直分布季节性差异较为显著,春夏冬季呈单峰分布结构,峰区分别位于700,950和300hPa附近,秋季呈双峰分布结构,峰区位于925和400hPa附近.站点间差异较小,广东省各站点与香港站点的O₃廓线年平均偏差介于-3.2%~11.0%之间.②对流层内秋冬季AIRS和ERA5数据质量好于春夏季.850~200hPa,AIRS和ERA5数据质量相对较好,各季节相对平均偏差(Rad)平均值分别介于16.5%~25.8%和15.1%~25.7%之间,相关系数(r)平均值分别介于0.47~0.75和0.23~0.74之间;而在850hPa以下,AIRS和ERA5数据质量相对较差,AIRS数据略好于ERA5数据,Rad平均值分别为31.6%和40.9%,r平均值分别为0.34和-0.15.③将O₃垂直分布分为5型,其中,AIRS与ERA5资料在1型分布结构下数据质量最好,而在2型和3型分布结构下数据质量最差.1型在秋冬季出现频率较高(分别为43%和61%),2型和3型在夏季出现频率较高(共66%),4型和5型在春季出现频率较高(共85%).

Abstract

Based on the ozonesonde data in Guangdong, Hong Kong, and Macao regions from 2022 to 2023, the vertical distribution characteristics of O₃ concentration were analyzed, and the applicability of Aqua satellite AIRS O₃ vertical profile product and ERA5 reanalysis O₃ vertical profile product were evaluated by using self-organizing map neural network (SOM) method. The vertical distribution of O₃ in the Greater Bay Area exhibited significant seasonal variations. In spring, summer, and winter, the ozone vertical distribution displayed a unimodal structure, with peak concentrations located near 700, 950, and 300 hPa, respectively. In contrast, the vertical distribution in autumn showed a bimodal structure, with peaks near 925 and 400hPa. The vertical differences in O₃ between stations were relatively small, with deviations between Guangdong and Hong Kong stations ranging from -3.2% to 11.0%. The quality of AIRS and ERA5 data in autumn and winter within the troposphere was better than that in spring and summer. At 850~200hPa, both AIRS and ERA5 data showed relatively good quality, with seasonal relative average deviations (Rad) ranging from 16.5% to 25.8% for AIRS and 15.1% to 25.7% for ERA5. The average correlation coefficients (r) for the seasons ranged from 0.47 to 0.75 for AIRS and 0.23 to 0.74 for ERA5. Below 850 hPa, the quality of AIRS and ERA5 data was relatively bad, with average value of r were 0.34 and -0.15. The vertical distribution of O₃ was categorized into 5 types. Among these, the data quality of AIRS and ERA5 was best under the type 1distribution structure, while it was worst under the type 2 and type 3 structures. Type 1 occurred more frequently in autumn (43%) and winter (61%), whereas type 2 and type 3 were more common in summer (66%).Type 4 and type 5 occurred more frequently in spring (85%).

导出引用

龚宇, 李婷苑, 沈劲, 陈靖扬. 利用臭氧探空数据评估卫星及再分析资料在粤港澳地区的适用性[J]. 中国环境科学. 2025, 45(4): 1858-1868

GONG Yu, LI Ting-yuan, SHEN Jin, CHEN Jing-yang. Assess the applicability of satellite and reanalysis data in Guangdong-Hongkong-Macao regions based on ozonesonde measurements[J]. China Environmental Science. 2025, 45(4): 1858-1868

中图分类号： X511

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基金

广东省基础与应用基础研究基金项目(2023A1515110536);广东省科技计划项目(2024B1212040006);广东省重点研发计划项目(2020B1111360003);中国气象局青年创新团队项目(CMA2023QN13);广东省气象局软科学项目(Z202304);广东省气象局科学技术研究项目(GRMC2022Q10)