A5101906643- Atmospheric chemistry and aerosols
- Fire effects on ecosystems
- Atmospheric and Environmental Gas Dynamics
- Atmospheric aerosols and clouds
- Hydrology and Sediment Transport Processes
- Hydraulic flow and structures
- Hydrology and Watershed Management Studies
- Coastal and Marine Dynamics
- Geological formations and processes
- Oceanographic and Atmospheric Processes
- Meteorological Phenomena and Simulations
- Ocean Waves and Remote Sensing
- Tropical and Extratropical Cyclones Research
- Flood Risk Assessment and Management
- Remote Sensing in Agriculture
- Arsenic contamination and mitigation
- Structural Engineering and Vibration Analysis
- Structural Load-Bearing Analysis
- Methane Hydrates and Related Phenomena
- Soil erosion and sediment transport
- Civil and Geotechnical Engineering Research
- Aeolian processes and effects
- Coastal wetland ecosystem dynamics
- Calcium Carbonate Crystallization and Inhibition
- Geological Modeling and Analysis
South Dakota State University
2018-2025
Nanchang University
2016-2019
First Affiliated Hospital of Nanchang University
2016-2019
Agro-Environmental Protection Institute
2018
Fremantle Hospital
2011-2012
Ministry of Communications
2010
Commonwealth Scientific and Industrial Research Organisation
2004-2008
Beijing Technology and Business University
2007
China Railway Major Bridge Reconnaissance & Design Institute (China)
2007
Ten Chen Hospital
2006
Abstract The National Oceanic and Atmospheric Administration (NOAA) has developed an advanced regional air quality prediction system (AQPS) within the Unified Forecast System (UFS) framework to improve representations of wildfire emissions their impacts on predictions. This innovative integrates Environmental Protection Agency’s (EPA) Community Multiscale Air Quality (CMAQ) model as a column chemistry with UFS-based atmospheric model, operating in online mode. calculation gas particulate...
Abstract Satellite‐based active fire data are a viable tool to understand the role of global fires in biosphere and atmosphere. The Moderate Resolution Imaging Spectroradiometer (MODIS) sensors on Aqua Terra satellites nearing end their lives. Visible Infrared Radiometer Suite (VIIRS) sensor Suomi National Polar‐orbiting Partnership satellite subsequent Joint Polar Satellite System series is expected extend MODIS record. Thus, understanding similarities discrepancies between two sets during...
Biomass burning is an important source of atmospheric greenhouse gases and aerosols, its emissions can be estimated using Fire Radiative Power (FRP) retrievals from polar-orbiting geostationary satellites. Accurate timely estimation biomass-burning (BBE) requires high-spatiotemporal-resolution FRP that characterized by accurate diurnal cycle. This study to estimate hourly reliable BBE in a 0.25° × 0.3125° grid across the conterminous United States (CONUS) used chemical transport models for...
Abstract The western United States experienced a record‐breaking wildfire season in 2020. This study quantifies the contribution of emissions to exceedances health‐based National Ambient Air Quality Standard (NAAQS) for fine particles (PM 2.5 ) by comparing two CMAQ simulations, with and without emissions. During August October 2020, wildfires contributed 23% surface PM contiguous US (CONUS), larger Pacific Coast (43%) Mountain Region (42%). Consequently, were primary contributor 3,720...
A numerical model, based on potential-flow theory is proposed for simulating the equilibrium scour hole formed by unidirectional flow underneath offshore pipelines. The model employs a finite-difference method to solve Laplace equation in terms of velocity potential curvilinear coordinate system. boundary adjustment technique Newton-Raphson used calculate free eroded seabed means all forces acting sediment particle sloping bed. Because solution field and topography are carried out an...
Abstract. Plume height plays a vital role in wildfire smoke dispersion and the subsequent effects on air quality human health. In this study, we assess impact of different plume rise schemes predicting pollution exceedances National Ambient Air Quality Standards (NAAQS) for fine particulate matter (PM2.5) during 2020 western United States season. Three widely used (Briggs, 1969; Freitas et al., 2007; Sofiev 2012) are compared within Community Multiscale (CMAQ) modeling framework. The heights...
Biomass burning plays a key role in the interaction between atmosphere and biosphere. The nearly two-decade-old Moderate Resolution Imaging Spectroradiometer (MODIS) active fire product provides critical information (e.g., radiative power or FRP) for characterizing fires estimating smoke emissions. Due to limitations of sensing geometry, MODIS detection capability degrades at off-nadir angles sensor misses observation occurring inside its equatorial swath gaps. This study investigates...
Smoke from fires significantly influences climate, weather, and human health. Fire smoke is traditionally detected using an aerosol index calculated spectral contrast changes. However, such methods usually miss thin plumes. It also remains challenging to accurately separate plumes dust, clouds, bright surfaces. To improve plume detections, this paper presents a new scattering-based detection algorithm (SSDA) depending mainly on visible infrared imaging radiometer suite (VIIRS) blue green...
Abstract. The National Oceanic and Atmospheric Administration (NOAA)'s Weather Service (NWS) is on its way to deploying various operational prediction applications using the Unified Forecast System (https://ufscommunity.org/, last access: 18 June 2022), a community-based coupled, comprehensive Earth modeling system. An aerosol model component developed in collaboration between Global Systems Laboratory, Chemical Science Air Resources Environmental Modeling Center (GSL, CSL, ARL, EMC) was...
The aboveground biomass (AGB) is closely linked to the carbon cycle in grassland ecosystems worldwide. Accurately quantifying AGB variations thus essential for assessing sequestration and its feedback on climate change. Although many studies have investigated AGB, they are limited local areas few research efforts been attempted estimate at large scales with constraint of situ quadrat harvested AGB. In this study, we used multi-source satellite remote sensing data from 2000 2021 abundant...
Abstract Increasing impacts of wildfires on Western US air quality highlights the need for forecasts smoke emissions based dynamic modeled wildfires. This work utilizes knowledge weather, fuels, topography, and firefighting, combined with machine learning other statistical methods, to generate 1‐ 2‐day fire radiative energy (FRE). The models are trained data covering 2019 2021 evaluated 2020. For 1‐day (2‐day) forecasts, random forest model shows most skill, explaining 48% (25%) variance in...
A numerical model for the equilibrium profiles of local scour around pipelines is developed. The solves turbulence flow field pipeline using a large eddy simulation in curvilinear coordinate system with frequent updates scoured seabed. iteration method determining profile based on assumption that seabed shear stress equal to critical sediment clear-water or undisturbed live-bed scour. Based this predicts hole without any transport formula. calculation results clearly reveal lee wakes behind...
Abstract Biomass-burning emissions (BBE) profoundly affect climate and air quality. BBE have been estimated using various methods, including satellite-based fire radiative power (FRP). However, estimates show very large variability the accuracy of estimation is poorly understood due to lack good reference data. We evaluated FRP from Advanced Baseline Imager (ABI) on GOES-R (Geostationary Operational Environmental Satellites-R) by comparing with Sentinel 5 Precursor TROPOspheric Monitoring...
While it is widely recognized that extreme fires have been increasing under warming and drying climate, knowledge regarding the magnitude intensity of very limited. Moreover, fire emissions reported by existing inventories show large discrepancies due to different approaches parameters. In this study, we analyzed 2019–2020 Australian bushfires using observations from multiple satellites. The results were in both their number intensity, which higher a factor 25 19, respectively, compared past...
Abstract Biomass burning substantially contributes to atmospheric aerosol and greenhouse gas emissions that influence climate air quality. Fire radiative energy (FRE) (units: MJ) has been demonstrated be linearly related biomass consumption kg) with potential for improving emission estimation. The scalar constant, termed herein as the FRE combustion coefficient (FBCC) kg/MJ), which converts consumption, estimated using field laboratory experiments, varying from 0.368 0.453 kg/MJ. However,...
Abstract Smoke aerosols released from biomass burning greatly influence air quality, weather, and climate. The total particulate matter (TPM) of smoke has been demonstrated to be a linear function fire radiative energy (FRE) during period via aerosol emission coefficient ( C e ). However, it remains challenging quantify appropriately through satellite observations. In this study, an innovative approach was put forward explore by establishing the relationships between FRE TPM in two regions,...