Analysis of ozone precursor pollution characteristics and ozone formation sensitivity in the Su-Wan-Lu-Yu Region based on GEE cloud platform and Sentinel-5P satellite data

KONG Fanping; ZHANG Yinglei; HAN Shengnan; LIU Yaping; LIU Yongwei

doi:10.13205/j.hjgc.202504003

Volume 43 Issue 4

Apr. 2025

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2025 > 43(4): 26-35

KONG F P，ZHANG Y L，HAN S N，et al.Analysis of ozone precursor pollution characteristics and ozone formation sensitivity in the Su-Wan-Lu-Yu Region based on GEE cloud platform and Sentinel-5P satellite data［J］.Environmental Engineering，2025，43（4）：26-35. doi: 10.13205/j.hjgc.202504003

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Analysis of ozone precursor pollution characteristics and ozone formation sensitivity in the Su-Wan-Lu-Yu Region based on GEE cloud platform and Sentinel-5P satellite data

doi: 10.13205/j.hjgc.202504003

Beijing Capital Air Environmental Science & Technology Co. Ltd., Beijing 100176, China

Received Date: 2024-03-29
Accepted Date: 2024-05-23
Rev Recd Date: 2024-05-14
Publish Date: 2025-04-01

Abstract

Abstract

In recent years， China's air quality has continued to improve， but the intensity and frequency of regional ozone （O₃） pollution processes shows an increasing trend. It is of great significance to study the spatiotemporal variations of O₃ precursors and their formation sensitivity in Jiangsu， Anhui， Shandong and Henan （Su-Wan-Lu-Yu Region）. This study utilized the Google Earth Engine （GEE） cloud platform and Sentinel-5P satellite remote sensing data to systematically analyze the spatiotemporal variations of ozone （O₃） precursors and their sensitivity to O₃ formation in the Su-Wan-Lu-Yu region from 2019 to 2023. The study found that the concentration of tropospheric formaldehyde （HCHO） column exhibited a distinct seasonal variation pattern of higher in summer and autumn， and lower in winter and spring， with the highest value in summer and an overall fluctuating increasing trend， particularly pronounced at the intersection of Henan， Anhui， and Shandong provinces. Conversely， the concentration of tropospheric nitrogen dioxide （NO₂） column showed the characteristics of higher in autumn and winter， and lower in spring and summer， with the highest value in winter peaks and an overall fluctuating decreasing trend， indicating a significant reduction in nitrogen oxides （NO_x ） emissions reduction effects in provincial capitals and surrounding cities. The O₃ formation sensitivity to precursor emissions was predominantly influenced by synergistic control zones， followed by volatile organic compounds （VOCs） control areas， predominantly distributed around central cities such as Zhengzhou， Jinan， Xuzhou， Nanjing and Hefei， showing an increasing trend in coverage. The NO_x control areas had the smallest coverage， mainly located in the western and southern non-central urban areas of Henan and Anhui provinces， showing an overall decreasing trend. This study provides scientific evidence for understanding the spatiotemporal distribution characteristics of O₃ precursors in the Su-Wan-Lu-Yu region， but also provides a reference for the formulation of environmental management and pollution control policies.
- GEE,
- Sentinel-5P,
- satellite remote sensing,
- ozone precursors,
- ozone formation sensitivity,
- spatiotemporal characteristics

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