Results 11 to 20 of about 7,352 (265)

The thermodynamic structures of the planetary boundary layer dominated by synoptic circulations and the regular effect on air pollution in Beijing [PDF]

open access: yesAtmospheric Chemistry and Physics, 2021
To investigate the impacts of multiscale circulations on the planetary boundary layer (PBL), we have carried out the PBL thermodynamic structure field experiment with a Doppler wind profile lidar, a microwave radiometer, and a ceilometer from January ...
Y. Jiang   +17 more
doaj   +1 more source

A review of indoor Gaseous organic compounds and human chemical Exposure: Insights from Real-time measurements

open access: yesEnvironment International, 2022
Gaseous organic compounds, mainly volatile organic compounds (VOCs), have become a wide concern in various indoor environments where we spend the majority of our daily time.
Bo You   +4 more
doaj   +1 more source

An ensemble method for improving the estimation of planetary boundary layer height from radiosonde data [PDF]

open access: yesAtmospheric Measurement Techniques, 2023
The planetary boundary layer (PBL) height (PBLH) is an important parameter for weather, climate, and air quality models. Radiosonde is one of the most commonly used instruments for PBLH determination and is generally accepted as a standard for other ...
X. Chen   +7 more
doaj   +1 more source

Algorithm for vertical distribution of boundary layer aerosol components in remote-sensing data [PDF]

open access: yesAtmospheric Measurement Techniques, 2022
The vertical distribution of atmospheric aerosol components is vital to the estimation of radiative forcing and the catalysis of atmospheric photochemical processes.
F. Wang   +15 more
doaj   +1 more source

Seasonal variations in the highly time-resolved aerosol composition, sources and chemical processes of background submicron particles in the North China Plain [PDF]

open access: yesAtmospheric Chemistry and Physics, 2021
For the first time in the North China Plain (NCP) region, we investigated the seasonal variations in submicron particles (NR-PM1) and their chemical composition at a background mountainous site of Xinglong using an Aerodyne high-resolution time-of-flight
J. Li   +15 more
doaj   +1 more source

Deep learning-based gas-phase chemical kinetics kernel emulator: Application in a global air quality simulation case

open access: yesFrontiers in Environmental Science, 2022
The global atmospheric chemical transport model has become a key technology for air quality forecast and management. However, precise and rapid air quality simulations and forecast are frequently limited by the model’s computational performance.
Zixi Wang   +15 more
doaj   +1 more source

Unbalanced emission reductions of different species and sectors in China during COVID-19 lockdown derived by multi-species surface observation assimilation [PDF]

open access: yesAtmospheric Chemistry and Physics, 2023
The unprecedented lockdown of human activities during the COVID-19 pandemic has significantly influenced social life in China. However, understanding the impact of this unique event on the emissions of different species is still insufficient, prohibiting
L. Kong   +27 more
doaj   +1 more source

An improved process-oriented hydro-biogeochemical model for simulating dynamic fluxes of methane and nitrous oxide in alpine ecosystems with seasonally frozen soils [PDF]

open access: yesBiogeosciences, 2021
The hydro-biogeochemical model Catchment Nutrient Management Model – DeNitrification-DeComposition (CNMM-DNDC) was established to simultaneously quantify ecosystem productivity and losses of nitrogen and carbon at the site or catchment scale.
W. Zhang   +14 more
doaj   +1 more source

Organic aerosol volatility and viscosity in the North China Plain: contrast between summer and winter [PDF]

open access: yesAtmospheric Chemistry and Physics, 2021
Volatility and viscosity have substantial impacts on gas–particle partitioning, formation and evolution of aerosol and hence the predictions of aerosol-related air quality and climate effects.
W. Xu   +31 more
doaj   +1 more source

Haze pollution under a high atmospheric oxidization capacity in summer in Beijing: insights into formation mechanism of atmospheric physicochemical processes [PDF]

open access: yesAtmospheric Chemistry and Physics, 2020
Under a high atmospheric oxidization capacity, the synergistic effect of the physicochemical processes in the atmospheric boundary layer (ABL) caused summer haze pollution in Beijing.
D. Zhao   +18 more
doaj   +1 more source

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