Search Results - "Fung, J C H"

Ozone source apportionment (OSAT) to differentiate local regional and super-regional source contributions in the Pearl River Delta region, China by Li, Y., Lau, A. K.-H., Fung, J. C.-H., Zheng, J. Y., Zhong, L. J., Louie, P. K. K.

“…It is well‐known that ground‐level ozone is not just a local or regional air quality problem; emission sources from super‐regional (sources outside the PRD…”
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Seasonal characteristics of fine particulate matter (PM) based on high-resolution time-of-flight aerosol mass spectrometric (HR-ToF-AMS) measurements at the HKUST Supersite in Hong Kong by Li, Y J, Lee, B P, Su, L, Fung, J C H, Chan, C K

“…Atmospheric particulate matter (PM) remains poorly understood due to the lack of comprehensive measurements at high time resolution for tracking its dynamic…”
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Development of a custom OMI NO2 data product for evaluating biases in a regional chemistry transport model by Kuhlmann, G, Lam, Y F, Cheung, H M, Hartl, A, Fung, J C H, Chan, P W, Wenig, M O

“…In this paper, we present the custom Hong Kong NO2 retrieval (HKOMI) for the Ozone Monitoring Instrument (OMI) on board the Aura satellite which was used to…”
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Application of positive matrix factorization in estimating aerosol secondary organic carbon in Hong Kong and its relationship with secondary sulfate by Yuan, Z. B., Yu, J. Z., Lau, A. K. H., Louie, P. K. K., Fung, J. C. H.

“…Secondary organic carbon (SOC) is often a significant portion of organic carbon (OC) in ambient particulate matter (PM). The levels and seasonal patterns of…”
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Optimal estimation of initial concentrations and emission sources with 4D-Var for air pollution prediction in a 2D transport model by Liu, Caili, Zhang, Shaoqing, Gao, Yang, Wang, Yuhang, Sheng, Lifang, Gao, Huiwang, Fung, J.C.H.

“…Attributing sources of air pollution events by deploying an efficient observational network is an important and interesting problem in air quality control and…”
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Updated global soil map for the Weather Research and Forecasting model and soil moisture initialization for the Noah land surface model by DY, C. Y., Fung, J. C. H.

“…A meteorological model requires accurate initial conditions and boundary conditions to obtain realistic numerical weather predictions. The land surface…”
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Structure of the planetary boundary layer over Southeast England: Modeling and measurements by Xie, Bo, Hunt, J. C. R., Carruthers, D. J., Fung, J. C. H., Barlow, J. F.

“…The Weather Research and Forecasting model was applied to analyze variations in the planetary boundary layer (PBL) structure over Southeast England including…”
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An Improved Non‐Local Planetary Boundary Layer Parameterization Scheme in Weather Forecasting and Research Model Based on a 1.5‐Order Turbulence Closure Model by Zhang, W., Fung, J. C. H., Wong, M. M. F.

“…Planetary boundary layer (PBL) modeling is a primary contributor to uncertainties in a numerical weather prediction (NWP) model due to difficulties in modeling…”
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Application of refined land-use categories for high resolution mesoscale atmospheric modelling by LAM, J. S. L, LAU, A. K. H, FUNG, J. C. H

“…A comparison of two separate MM5 land-use datasets (i.e., 'US Geological Survey (USGS)' and 'Pollutants in the Atmosphere and their Transport over Hong Kong…”
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A comparison of momentum mixing models for the planetary boundary layer by Xie, Bo, Fung, J. C. H.

“…In a convective planetary boundary layer (PBL), nonlocal closure PBL models represent the turbulent mixing as nonlocal mixing induced by large‐scale eddies in…”
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An assessment indicator for air ventilation and pollutant dispersion potential in an urban canopy with complex natural terrain and significant wind variations by Yim, S.H.L., Fung, J.C.H., Ng, E.Y.Y.

“…In an urban planning context, an assessment indicator for evaluating a city's dispersion potential is beneficial, especially if the city has a complex natural…”
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Spontaneous Generation of Single Vortices and Anti-Vortices in Superconductors with Restricted Geometries by Sobnack, M. B., Kusmartsev, F. V., Fung, J. C. H.

“…We study the nucleation of vortices in a thin (thickness ≪ penetration depth) mesoscopic superconducting disc in an applied magnetic field perpendicular to the…”
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Air ventilation impacts of the “wall effect” resulting from the alignment of high-rise buildings by Yim, S.H.L., Fung, J.C.H., Lau, A.K.H., Kot, S.C.

“…The objective of this study is to investigate the air ventilation impacts of the so called “wall effect” caused by the alignment of high-rise buildings in…”
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Momentum Drag Effect Over Urbanized Areas in the ACM2 PBL Component of the WRF model by Dy, C. Y., Fung, J. C. H., Pleim, Jonathan

“…Mesoscale meteorology models, such as the Weather Research and Forecasting (WRF) model, typically use land use categorization data to specify surface…”
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Residence time of inertial particles in a vortex by Fung, J. C. H.

“…The residence time of a particle within a spatial domain is the total time it spends within this domain. We study the residence time of small dense particles…”
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Ozone changes in response to the heavy-duty diesel truck control in the Pearl River Delta by Yu, Xin, Yuan, Zibing, Fung, J.C.H., Xue, Jian, Li, Ying, Zheng, Junyu, Lau, A.K.H.

“…In recent years, restricting heavy-duty diesel trucks from driving within urban areas during the daytime is implemented in major PRD cities (e.g. Guangzhou and…”
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Observational and modeling analysis of a severe air pollution episode in western Hong Kong by Fung, J. C. H., Lau, A. K. H., Lam, J. S. L., Yuan, Z.

“…A severe air pollution episode occurred over much of the western part of Hong Kong (HK) between 28 and 30 December 1999. In this study, multiple analyses were…”
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High-resolution satellite remote sensing of provincial PM2.5 trends in China from 2001 to 2015 by Lin, C.Q., Liu, G., Lau, A.K.H., Li, Y., Li, C.C., Fung, J.C.H., Lao, X.Q.

“…Given the vast territory of China, the long-term PM2.5 trends may substantially differ among the provinces. In this study, we aim to assess the provincial…”
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Effect of nonlinear drag on the settling velocity of particles in homogeneous isotropic turbulence by Fung, J. C. H.

“…We study the average settling velocity of small spherical particles under gravity through a Gaussian random velocity field generated by Fourier modes with a…”
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Spatiotemporal source apportionment of ozone pollution over the Greater Bay Area by Chen, Yiang, Lu, Xingcheng, Fung, Jimmy C. H

“…It has been found that ozone (O3) pollution episodic cases are prone to appear when the Greater Bay Area (GBA) is under the control of typhoons and subtropical…”
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