On dust concentration profile above an area source in a neutral atmospheric surface layer

Zhu, Zhengping; Hu, Ruifeng; Zheng, Xiaojing; Wang, Yan

doi:10.1007/s10652-017-9542-z

Cited by 3 publications

(1 citation statement)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The influence of atmospheric stability can be included in this model as well (Chamecki et al, 2007;Freire et al, 2016). Furthermore, these models can be extended to obtain self-similarity solution for concentration profile in steady state two-dimensional particle transport with horizontal advection (Chamecki & Meneveau, 2011;Zhu et al, 2017).…”

Section: 1029/2018jd028820mentioning

confidence: 99%

Parameterized Vertical Concentration Profiles for Aerosols in the Marine Atmospheric Boundary Layer

et al. 2018

View full text Add to dashboard Cite

Information about sea spray aerosol particle transport and their vertical distribution in the marine atmospheric boundary layer (MABL) is important in marine meteorological forecasting and geobiochemical models. However, due to difficulties in field observations, values of aerosol concentration are often limited to point measurements, and obtaining the size‐resolved concentration profiles is quite challenging. Hence, numerical and analytical studies are vital in modeling the transport of aerosols in the atmospheric boundary layer and beyond. Due to their coarse resolution, most mesoscale and global aerosol models do not accurately resolve the sea spray and aerosol concentrations in the MABL, especially in the surface layer. The objective of the present study is to develop a relatively simple, one‐dimensional analytical model to calculate concentration profiles of aerosols in the MABL. In this study, a new analytical model relating surface flux to vertical concentration profile in the MABL is proposed. The model accounts for the different atmospheric stability and particle settling velocity, thus providing size‐resolved vertical profiles of aerosol concentration. The equations developed here extend the surface layer similarity models to the mixed layer. Model results are compared to aerosol concentration profiles emitted from a surface source obtained from large eddy simulations, for both neutral and unstable atmospheric stability and for particle sizes ranging from 1 to 30 μm. Though the model is developed for sea spray aerosols, it can be used to calculate vertical concentration profiles for other types of settling particles, including dust and sand particles in the atmospheric boundary layer.

show abstract

Section: 1029/2018jd028820mentioning

confidence: 99%

Parameterized Vertical Concentration Profiles for Aerosols in the Marine Atmospheric Boundary Layer

et al. 2018

View full text Add to dashboard Cite

show abstract

Mechanisms governing the settling velocities and spatial distributions of inertial particles in wall-bounded turbulence

2021

View full text Add to dashboard Cite

Influence of Natural Air Exchange on the Concentration of Suspended Particles

Abramkina

Agakhanova

2019

Vestn. SibADI

View full text Add to dashboard Cite

Introduction. The purpose of the article is to assess the quality of indoor air in university by measuring the concentration of suspended particles. In the Russian Federation, the rationing of maximum permissible concentrations of undifferentiated dust in atmospheric air depends on particle size.Materials and methods. The research carries out measurements of suspended particles concentrations in the air of six audiences in the Moscow State National Research University of Civil Engineering (NRU MGSU).Results. The obtained results of concentration measurements (particle/m3) are recalculates in mg/m3, and compared with threshold values of maximum one-time concentrations of suspended particles.Discussion and conclusions. In calm weather, air pollution by suspended particles in the surface layer practically does not affect the quality of internal microclimate, which is associated with significant decrease of dust concentration in height and insufficient air exchange in natural ventilation systems.

show abstract

On dust concentration profile above an area source in a neutral atmospheric surface layer

Cited by 3 publications

References 26 publications

Parameterized Vertical Concentration Profiles for Aerosols in the Marine Atmospheric Boundary Layer

Parameterized Vertical Concentration Profiles for Aerosols in the Marine Atmospheric Boundary Layer

Mechanisms governing the settling velocities and spatial distributions of inertial particles in wall-bounded turbulence

Influence of Natural Air Exchange on the Concentration of Suspended Particles

Contact Info

Product

Resources

About