Shaojia Fan
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View article: Surface and tropospheric ozone over East Asia and Southeast Asia from observations: distributions, trends, and variability
Surface and tropospheric ozone over East Asia and Southeast Asia from observations: distributions, trends, and variability Open
The high level of ozone throughout the troposphere is an emerging concern for East Asia and Southeast Asia. Here, we analyze available surface ozone measurements from the past two decades (2005–2021) over eight countries, with 10 ozonesond…
View article: Anthropogenic emission largely enhances nocturnal oxidation chemistry in the upper mixing layer of megacities
Anthropogenic emission largely enhances nocturnal oxidation chemistry in the upper mixing layer of megacities Open
Nitrate radicals (NO3) play a crucial role in the removal of nitrogen oxides (NOx) from Earth's atmosphere and act as the dominant nocturnal oxidant in polluted regions, thereby influencing air quality, climate, and e…
View article: Tropospheric ozone trends and attributions over East and Southeast Asia in 1995–2019: an integrated assessment using statistical methods, machine learning models, and multiple chemical transport models
Tropospheric ozone trends and attributions over East and Southeast Asia in 1995–2019: an integrated assessment using statistical methods, machine learning models, and multiple chemical transport models Open
We apply a statistical model, two machine learning models, and three chemical transport models to attribute the observed ozone increases over East and Southeast Asia (ESEA) to changes in anthropogenic emissions and climate. Despite variati…
View article: Using Geostationary-Derived Sub-Daily FRP Variability vs. Prescribed Diurnal Cycles: Impact of African Fires on Tropospheric Ozone
Using Geostationary-Derived Sub-Daily FRP Variability vs. Prescribed Diurnal Cycles: Impact of African Fires on Tropospheric Ozone Open
Assessing the impact of biomass burning (BB) emissions on tropospheric ozone is critical for effective air pollution control. BB emission inventories like GFED and GFAS, typically based on sun-synchronous satellite observations, report emi…
View article: Surface and tropospheric ozone over East Asia and Southeast Asia from observations: distributions, trends, and variability
Surface and tropospheric ozone over East Asia and Southeast Asia from observations: distributions, trends, and variability Open
High level of ozone throughout the troposphere is an emerging concern over East Asia and Southeast Asia. Here we analyzed available surface ozone measurements in the past two decades (2005–2021) over eight countries, and ten ozonesonde and…
View article: The Urbanization Difference between the Two Sides of the Greater Bay Area Regulates the Evolution Divergence of Sea-Land Breeze
The Urbanization Difference between the Two Sides of the Greater Bay Area Regulates the Evolution Divergence of Sea-Land Breeze Open
View article: Rapid increase in spring ozone in the Pearl River Delta, China during 2013-2022
Rapid increase in spring ozone in the Pearl River Delta, China during 2013-2022 Open
Surface ozone pollution is a severe air pollution problem and typically occurs in the warm season since it is driven by photochemistry. Recent studies showed a tendency for ozone pollution to spread into the cold season. Yet, less attentio…
View article: Tropospheric ozone trends and attributions over East and Southeast Asia in 1995–2019: An integrated assessment using statistical methods, machine learning models, and multiple chemical transport models
Tropospheric ozone trends and attributions over East and Southeast Asia in 1995–2019: An integrated assessment using statistical methods, machine learning models, and multiple chemical transport models Open
We apply a statistical model, two machine learning models, and three chemical transport models to attribute the observed ozone increases over East and Southeast Asia (ESEA) to changes in anthropogenic emissions and climate. Despite variati…
View article: Deciphering decadal urban ozone trends from historical records since 1980
Deciphering decadal urban ozone trends from historical records since 1980 Open
Ozone pollution is a major environmental threat to human health. Timely assessment of ozone trends is crucial for informing environmental policy. Here we show that for the most recent decade (2013–2022) in the northern hemisphere, warm-sea…
View article: ACEIC: a comprehensive anthropogenic chlorine emission inventory for China
ACEIC: a comprehensive anthropogenic chlorine emission inventory for China Open
Chlorine species play a crucial role as precursors to Cl radicals, which can significantly impact the atmospheric oxidation capacity and influence the levels of trace gases related to climate and air quality. Several studies have establish…
View article: Vertical distribution of ozone in spring based on two high tower observations over the Pearl River Delta, China
Vertical distribution of ozone in spring based on two high tower observations over the Pearl River Delta, China Open
This study investigates the vertical distribution characteristics of ozone (O3) in the Pearl River Delta (PRD) region during spring, utilising observational data from two tall towers in urban and suburban areas of the PRD, i.e., the 600 m …
View article: Rapid increase in spring ozone in the Pearl River Delta, China during 2013-2022
Rapid increase in spring ozone in the Pearl River Delta, China during 2013-2022 Open
Surface ozone pollution is a severe air pollution problem and typically occurs in the warm season since it is driven by photochemistry. Recent studies showed a tendency for ozone pollution to spread into the cold season. Yet, less attentio…
View article: Mixing-layer-height-referenced ozone vertical distribution in the lower troposphere of Chinese megacities: stratification, classification, and meteorological and photochemical mechanisms
Mixing-layer-height-referenced ozone vertical distribution in the lower troposphere of Chinese megacities: stratification, classification, and meteorological and photochemical mechanisms Open
Traditional tropospheric ozone (O3) climatology uses a simple average substantially smoothed stratification structure in individual O3 profiles, limiting our ability to properly describe and understand how O3 is vertically distributed at t…
View article: Revisiting the quantification of power plant CO2 emissions in the United States and China from satellite: a comparative study using three top-down approaches.
Revisiting the quantification of power plant CO2 emissions in the United States and China from satellite: a comparative study using three top-down approaches. Open
Top-down constraints of CO2 emissions from coal-fired power plants are critical to improving the accuracy of CO2 emission inventory and designing carbon reduction strategies. Different top-down models based on satellite observation have be…
View article: Wildfires in Southeast Asia pollute the atmosphere in the northern South China Sea
Wildfires in Southeast Asia pollute the atmosphere in the northern South China Sea Open
View article: Measurement report: Nocturnal subsidence behind the cold front enhances surface particulate matter in plains regions: observations from the mobile multi-lidar system
Measurement report: Nocturnal subsidence behind the cold front enhances surface particulate matter in plains regions: observations from the mobile multi-lidar system Open
A multi-lidar system, mounted in a vehicle to monitor the profiles of temperature, wind, and particle optical properties, was utilized to investigate the winter fine particulate matter (PM2.5) pollution from a vertical perspective in four …
View article: Measurement report: Atmospheric nitrate radical chemistry in the South China Sea influenced by the urban outflow of the Pearl River Delta
Measurement report: Atmospheric nitrate radical chemistry in the South China Sea influenced by the urban outflow of the Pearl River Delta Open
The nitrate radical (NO3) is a critical nocturnal atmospheric oxidant in the troposphere, which widely affects the fate of air pollutants and regulates air quality. Many previous works have reported the chemistry of NO3 in inland regions o…
View article: Reply on RC1
Reply on RC1 Open
Abstract. Traditional tropospheric ozone (O3) climatology uses a simple average substantially smoothed stratification structure in individual O3 profiles, limiting our ability to properly describe and…
View article: Reply on RC2
Reply on RC2 Open
Abstract. Traditional tropospheric ozone (O3) climatology uses a simple average substantially smoothed stratification structure in individual O3 profiles, limiting our ability to properly describe and…
View article: A Brief Analysis of Safety and Health Hazard Awareness in Building Construction in China from 2001 to 2022
A Brief Analysis of Safety and Health Hazard Awareness in Building Construction in China from 2001 to 2022 Open
On the basis of summarizing the research results of domestic and foreign scholars on safety awareness, this paper summarizes the influencing factors of safety awareness into three levels: laws and regulations, safety management, and safety…
View article: Comment on egusphere-2023-1011
Comment on egusphere-2023-1011 Open
Abstract. Traditional tropospheric ozone (O3) climatology uses a simple average substantially smoothed stratification structure in individual O3 profiles, limiting our ability to properly describe and…
View article: Nighttime ozone in the lower boundary layer: insights from 3-year tower-based measurements in South China and regional air quality modeling
Nighttime ozone in the lower boundary layer: insights from 3-year tower-based measurements in South China and regional air quality modeling Open
Nighttime ozone in the lower boundary layer regulates atmospheric chemistry and surface ozone air quality, but our understanding of its vertical structure and impact is largely limited by the extreme sparsity of direct measurements. Here w…
View article: Measurement report: Nocturnal subsidence behind the cold front enhances surface particulate matter in the plain regions: observation from the mobile multi-lidar system
Measurement report: Nocturnal subsidence behind the cold front enhances surface particulate matter in the plain regions: observation from the mobile multi-lidar system Open
A multi-lidar system, mounted in vehicle to monitor the profiles of temperature, wind and particle optical properties, was utilized to investigate the winter fine particulate matter (PM2.5) pollution for a vertical perspective, in four cit…
View article: Comment on egusphere-2023-1401
Comment on egusphere-2023-1401 Open
Abstract. Nitrate radical (NO3) is a critical nocturnal atmospheric oxidant in the troposphere, which widely affects the fate of air pollutants and regulates air quality. Many previous works have reported the ch…
View article: Comment on egusphere-2023-1448
Comment on egusphere-2023-1448 Open
Abstract. Reactive chlorine species play a crucial role as precursors to Cl radicals, which can significantly impact the atmospheric oxidation capacity and influence the levels of trace gases related to climate and air qua…
View article: Comment on egusphere-2023-1448
Comment on egusphere-2023-1448 Open
Abstract. Reactive chlorine species play a crucial role as precursors to Cl radicals, which can significantly impact the atmospheric oxidation capacity and influence the levels of trace gases related to climate and air qua…
View article: Measurement report: Atmospheric nitrate radical chemistry in the South China Sea influenced by the urban outflow of the Pearl River Delta
Measurement report: Atmospheric nitrate radical chemistry in the South China Sea influenced by the urban outflow of the Pearl River Delta Open
Nitrate radical (NO3) is a critical nocturnal atmospheric oxidant in the troposphere, which widely affects the fate of air pollutants and regulates air quality. Many previous works have reported the chemistry of NO3 in inland regions of Ch…
View article: Variation and trend of nitrate radical reactivity towards volatile organic compounds in Beijing, China
Variation and trend of nitrate radical reactivity towards volatile organic compounds in Beijing, China Open
Nitrate radical (NO3) is an important nocturnal atmospheric oxidant in the troposphere that significantly affects the lifetime of pollutants emitted by anthropogenic and biogenic activities, especially volatile organic compounds (VOCs). He…
View article: Supplementary material to "Measurement report: Atmospheric nitrate radical chemistry in the South China Sea influenced by the urban outflow of the Pearl River Delta"
Supplementary material to "Measurement report: Atmospheric nitrate radical chemistry in the South China Sea influenced by the urban outflow of the Pearl River Delta" Open
View article: Supplementary material to "ACEIC: a comprehensive anthropogenic chlorine emission inventory for China"
Supplementary material to "ACEIC: a comprehensive anthropogenic chlorine emission inventory for China" Open