MAX-DOAS and in-situ measurements of aerosols and trace gases over Dongying, China: Insight into ozone formation sensitivity based on secondary HCHO

Zheng, Xiaojun; Javed, Zeeshan; Liu, Cheng; Tanvir, Aimon; Sandhu, Osama; Liu, Haoran; Ji, Xiangguang; Xing, Chengzhi; Lin, Hua; Du, Daolin

doi:10.1016/j.jes.2022.09.014

Cited by 10 publications

(5 citation statements)

References 64 publications

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“…Spectral observations were conducted at various elevation viewing angles controlled by a built‐in mechanical processor. Detailed information about the instrumental operations can be found in previous works (Xing et al., 2017; Zheng et al., 2022). Differential slant column densities computed from the observed spectra by the QDOAS software (Danckaert et al., 2012) were combined with the differential air mass factors to derive the vertical column densities (VCDs).…”

Section: Methodsmentioning

confidence: 99%

“…Differential slant column densities computed from the observed spectra by the QDOAS software (Danckaert et al., 2012) were combined with the differential air mass factors to derive the vertical column densities (VCDs). Trace gas profiles were retrieved based on the optimal estimation method (Rodgers, 2000) using a forward radiative transfer model (Frieß et al., 2016; Xing et al., 2017; Zheng et al., 2022). In this study, data measured with a solar zenith angle >75°, or DOAS fitting results with root mean square of residuals larger than 10 −3 were filtered out.…”

Section: Methodsmentioning

confidence: 99%

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Remote Sensing Measurements at a Rural Site in China: Implications for Satellite NO₂ and HCHO Measurement Uncertainty and Emissions From Fires

Chong,

Wang,

Liu

et al. 2024

JGR Atmospheres

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Nitrogen dioxide (NO2) and formaldehyde (HCHO) play vital roles in atmospheric photochemical processes. Their tropospheric vertical column density (TVCD) distributions have been monitored by satellite instruments. Evaluation of these observations is essential for applying these observations to study photochemistry. Assessing satellite products using observations at rural sites, where local emissions are minimal, is particularly useful due in part to the spatial homogeneity of trace gases. In this study, we evaluate OMI and TROPOMI NO2 and HCHO TVCDs using multi‐axis differential optical absorption spectroscopy (MAX‐DOAS) measurements at a rural site in the east coast of the Shandong province, China in spring 2018 during the Ozone Photochemistry and Export from China Experiment (OPECE) measurement campaign. On days not affected by local burning, we found generally good agreement of NO2 data after using consistent a priori profiles in satellite and MAX‐DOAS retrievals and accounting for low biases in scattering weights in one of the OMI products. In comparison, satellite HCHO products exhibited weaker correlations with MAX‐DOAS data, in contrast to satellite NO2 products. However, TROPOMI HCHO products showed significantly better agreement with MAX‐DOAS measurements compared to OMI data. Furthermore, case studies of the vertical profiles measured by MAX‐DOAS on burning days revealed large enhancements of nitrous acid (HONO), NO2, and HCHO in the upper boundary layer, accompanied with considerable variability, particularly in HONO enhancements.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Remote Sensing Measurements at a Rural Site in China: Implications for Satellite NO₂ and HCHO Measurement Uncertainty and Emissions From Fires

Chong,

Wang,

Liu

et al. 2024

JGR Atmospheres

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Section: Study Areamentioning

confidence: 99%

“…The region's GDP grew from CNY 46.511 million in 2000 to CNY 298.199 million in 2020. The area is an important petrochemical base in China, with topography that is lower in the northeast than in the southwest [38,39]. The protection and rejuvenation of wetlands are crucial for maintaining the security and biodiversity of the watershed ecosystem.…”

Section: Study Areamentioning

confidence: 99%

Estimating the Past and Future Trajectory of LUCC on Wetland Ecosystem Service Values in the Yellow River Delta Region of China

Zhang,

Han,

Feng

et al. 2024

Sustainability

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Land use/cover change (LUCC) can impact the provision of ecosystem service values (ESVs), particularly in wetland regions that are subject to frequent and unsustainable land conversions. Exploring the past and future trajectory of LUCC and its effects on ESV has a great significance for wetland management and habitat stability. This study tried to reveal the patterns and magnitude of LUCC on ESV under varying land development scenarios in the Yellow River Delta region, which is a typical region undergoing serious degradation in China. In this study, a combined approach utilizing equivalent coefficients of ecosystem services was employed to determine the ESV of the wetland in relation to the major land use types (LUTs). The Markov–FLUS model was then used to simulate LUTs across multiple scenarios in 2030 and to clarify the relationship of ESV between wetland and other LUTs. The results indicated that the wetland was severely degraded, with a loss in area of 6679.89 ha between 2000 and 2020. Cropland and water body were the main sources of diversion and turnover for the wetland, respectively. Despite the multiple scenario projections revealed, the wetland area exhibited a similar growth rate and a homogeneity in ESV under the natural development (ND), urban construction and development (UCD), and the ecological development (ED) scenarios. The ED scenario was deemed the optimal development strategy for the wetland ecosystem. Our research will improve the comprehension of land development decisions and promote sustainable development in estuarine wetland areas.

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“…Tian et al [6] analyzed the highaltitude transmission characteristics of NO 2 , HCHO, and HCHO gases in urban Nanjing, Hefei, and Shanghai in the YRD based on the MAX-DAOS system. Xing et al [51] and Zheng et al [52] analyzed the tropospheric distribution and sources of NO 2 and HCHO in the coastal cities of the Bohai Sea using MAX-DOAS. It is thus possible to employ MAX-DOAS to investigate information on tropospheric aerosol, NO 2 , and HCHO distribution at various altitudes in island cities.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Vertical Distribution and Driving Factors of Aerosol and Ozone Precursors in Huaniao Island, China, Based on Ground-Based MAX-DOAS

Ou,

Hu,

Xing

et al. 2023

Remote Sensing

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Urban air pollution has become a regional environmental problem. In order to explore whether island areas were affected by the urban development of surrounding areas, in this paper, we systematically study the vertical distribution characteristics of atmospheric components, meteorological drivers, potential pollution sources, and the population health risks of fine particulate matter in island cities in China. The vertical profiles of three atmospheric pollutants (aerosols, NO2, and HCHO) in the lower troposphere of Huaniao Island in the East China Sea (ECS) were obtained using ground-based multi-axial differential optical absorption spectroscopy (MAX-DOAS). The results show that the aerosol extinction coefficients, NO2, and HCHO were primarily distributed at altitudes below 1 km, and the atmospheric pollutants in Zhoushan were obviously affected by high-altitude transfer. The main meteorological driving factors of aerosols, NO2, and HCHO were different at different altitudes. The key factor contributing to the high column concentrations of NO2 and HCHO in the upper air (greater than 400 m) was the transport of pollutants brought about by changes in wind speed. By exploring the main potential sources of atmospheric pollutants, it was found that the main sources of aerosols, NO2, and HCHO are coastal cities in the Yangtze River Delta, including southeast Zhejiang Province, southeast Fujian Province, Shanghai, ECS, and the Yellow Sea. Compared with aerosols and HCHO, local primary emissions are an important source of NO2, which are mainly related to industrial activities in Zhoushan Port. In addition, using the expose-response function model, the number of attributable cases of PM2.5 air pollution in Zhoushan City in 2019 accounted for 6.58% of the total population. This study enriches our understanding of the vertical distribution characteristics of atmospheric composition and health risk assessment on Chinese islands.

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MAX-DOAS and in-situ measurements of aerosols and trace gases over Dongying, China: Insight into ozone formation sensitivity based on secondary HCHO

Cited by 10 publications

References 64 publications

Remote Sensing Measurements at a Rural Site in China: Implications for Satellite NO₂ and HCHO Measurement Uncertainty and Emissions From Fires

Remote Sensing Measurements at a Rural Site in China: Implications for Satellite NO₂ and HCHO Measurement Uncertainty and Emissions From Fires

Estimating the Past and Future Trajectory of LUCC on Wetland Ecosystem Service Values in the Yellow River Delta Region of China

Analysis of the Vertical Distribution and Driving Factors of Aerosol and Ozone Precursors in Huaniao Island, China, Based on Ground-Based MAX-DOAS

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MAX-DOAS and in-situ measurements of aerosols and trace gases over Dongying, China: Insight into ozone formation sensitivity based on secondary HCHO

Cited by 10 publications

References 64 publications

Remote Sensing Measurements at a Rural Site in China: Implications for Satellite NO2 and HCHO Measurement Uncertainty and Emissions From Fires

Remote Sensing Measurements at a Rural Site in China: Implications for Satellite NO2 and HCHO Measurement Uncertainty and Emissions From Fires

Estimating the Past and Future Trajectory of LUCC on Wetland Ecosystem Service Values in the Yellow River Delta Region of China

Analysis of the Vertical Distribution and Driving Factors of Aerosol and Ozone Precursors in Huaniao Island, China, Based on Ground-Based MAX-DOAS

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Product

Resources

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Remote Sensing Measurements at a Rural Site in China: Implications for Satellite NO₂ and HCHO Measurement Uncertainty and Emissions From Fires

Remote Sensing Measurements at a Rural Site in China: Implications for Satellite NO₂ and HCHO Measurement Uncertainty and Emissions From Fires