A5107276450- Atmospheric aerosols and clouds
- Atmospheric chemistry and aerosols
- Meteorological Phenomena and Simulations
- Climate variability and models
- Aeolian processes and effects
- Atmospheric Ozone and Climate
- Precipitation Measurement and Analysis
- Atmospheric and Environmental Gas Dynamics
- Air Quality and Health Impacts
- Cryospheric studies and observations
- Tropical and Extratropical Cyclones Research
- Advanced biosensing and bioanalysis techniques
- Fire effects on ecosystems
- Wind and Air Flow Studies
- Renal Transplantation Outcomes and Treatments
- Air Quality Monitoring and Forecasting
- Icing and De-icing Technologies
- Plant Water Relations and Carbon Dynamics
- Urban Heat Island Mitigation
- Galectins and Cancer Biology
- Peptidase Inhibition and Analysis
- Solar and Space Plasma Dynamics
- Environmental and biological studies
- Geophysics and Gravity Measurements
- Remote Sensing and Land Use
Argonne National Laboratory
2023-2025
Sichuan University
2021-2025
West China Hospital of Sichuan University
2021-2025
Pacific Northwest National Laboratory
2015-2024
Jilin University
2024
Union Hospital
2024
Shanghai Clinical Research Center
2024
Scripps Institution of Oceanography
2018-2024
Southern Medical University
2022
Nanfang Hospital
2022
Abstract Anthropogenic emissions and land use changes have modified atmospheric aerosol concentrations size distributions over time. Understanding preindustrial conditions in organic due to anthropogenic activities is important because these features (1) influence estimates of radiative forcing (2) can confound the historical response climate increases greenhouse gases. Secondary (SOA), formed atmosphere by oxidation gases, represents a major fraction global submicron‐sized aerosol. Over...
Abstract Over the past decade, number of studies that investigate aerosol–cloud interactions has increased considerably. Although tremendous progress been made to improve understanding basic physical mechanisms and reduce their uncertainties in climate forcing, there is still poor 1) some interact with each other over multiple spatial temporal scales, 2) feedbacks between microphysical dynamical processes local-scale large-scale circulations, 3) significance cloud–aerosol on weather systems...
Abstract The increasing severity of droughts/floods and worsening air quality from aerosols in Asia monsoon regions are the two gravest threats facing over 60% world population living Asian regions. These dual have fueled a large body research last decade on roles impacting weather climate. This paper provides comprehensive review studies aerosols, monsoons, their interactions. region is primary source emissions diverse species both anthropogenic natural origins. distributions aerosol...
Up with ultrafine aerosol particles Ultrafine (smaller than 50 nanometers in diameter) have been thought to be too small affect cloud formation. Fan et al. show that this is not the case. They studied effect of urban pollution transported into otherwise nearly pristine atmosphere Amazon. Condensational growth water droplets around tiny releases latent heat, thereby intensifying atmospheric convection. Thus, anthropogenic may exert a more important influence on formation processes previously...
Aerosol‐cloud interaction is recognized as one of the key factors influencing cloud properties and precipitation regimes across local, regional, global scales remains largest uncertainties in understanding projecting future climate changes. Deep convective clouds (DCCs) play a crucial role general circulation, energy balance, hydrological cycle our system. The complex aerosol‐DCC interactions continue to be puzzling more “aerosol effects” unfold, systematic assessment such effects lacking....
Significance Deep convective clouds (DCCs) play a key role in atmospheric circulation and the hydrological energy cycle. How aerosol particles affect DCCs is poorly understood, making it difficult to understand current future weather climate. Our work showed that addition invigoration of convection, which has been unanimously cited for explaining observed results, microphysical effects induced by aerosols are fundamental reason increases cloud fraction, top height, thickness polluted...
Long‐term observational data reveal that both the frequency and amount of light rain have decreased in eastern China (EC) for 1956–2005 with high spatial coherency. This is different from trend total rainfall observed EC, which decreases northern EC increases southern EC. To examine cause trends, we analyzed long‐term variability atmospheric water vapor its correlation events. Results show very weak relationships between large‐scale moisture transport Because human activities, pollutant...
Abstract. The Observations and Modeling of the Green Ocean Amazon (GoAmazon2014/5) Experiment was carried out in environs Manaus, Brazil, central region basin for 2 years from 1 January 2014 through 31 December 2015. experiment focused on complex interactions among vegetation, atmospheric chemistry, aerosol production one hand their connections to aerosols, clouds, precipitation other. objective understand quantify these linked processes, first under natural conditions obtain a baseline...
A comprehensive dataset of microphysical and radiative properties aerosols clouds in the boundary layer vicinity Barrow, Alaska, was collected April 2008 during Indirect Semi-Direct Aerosol Campaign (ISDAC). ISDAC's primary aim to examine effects aerosols, including those generated by Asian wildfires, on that contain both liquid ice. ISDAC utilized Atmospheric Radiation Measurement Pro- gram's permanent observational facilities at Barrow specially deployed instruments measuring aerosol, ice...
Abstract Aerosols have significant and complex impacts on regional climate in East Asia. Cloud‐aerosol‐precipitation interactions (CAPI) remain most challenging studies. The quantitative understanding of CAPI requires good knowledge aerosols, ranging from their formation, composition, transport, radiative, hygroscopic, microphysical properties. A comprehensive review is presented here centered the based chiefly, but not limited to, publications special section named EAST‐AIRcpc concerning...
One of the least understood aspects in atmospheric chemistry is how urban emissions influence formation natural organic aerosols, which affect Earth's energy budget. The Amazon rainforest, during its wet season, one few remaining places on Earth where transitions between preindustrial and urban-influenced conditions. Here, we integrate insights from several laboratory measurements simulate secondary aerosols (SOA) using a high-resolution chemical transport model. Simulations show that...
Abstract Regional climate simulations over the continental United States were conducted for 2011 warm season using Weather Research and Forecasting model at convection‐permitting resolution (4 km) with two commonly used microphysics parameterizations (Thompson Morrison). Sensitivities of simulated mesoscale convective system (MCS) properties feedbacks to large‐scale environments are systematically examined against high‐resolution geostationary satellite 3‐D mosaic radar observations. MCS...
Abstract The Observations and Modeling of the Green Ocean Amazon 2014–2015 (GoAmazon2014/5) experiment took place around urban region Manaus in central Amazonia across 2 years. pollution plume was used to study susceptibility gases, aerosols, clouds, rainfall human activities a tropical environment. Many aspects air quality, weather, terrestrial ecosystems, climate work differently tropics than more thoroughly studied temperate regions Earth. GoAmazon2014/5, cooperative project Brazil,...
Abstract Extreme weather events have become more frequent and are likely linked to increases in greenhouse gases aerosols, which alter the Earth's radiative balance cloud processes. On 8–9 July 2013, a catastrophic flood devastated mountainous area northwest of Sichuan Basin. Atmospheric simulations at convection‐permitting scale with aerosols chemistry included show that heavy air pollution trapped basin significantly enhances rainfall intensity over areas through “aerosol‐enhanced...
Abstract. The WRF-Chem model coupled with a single-layer urban canopy (UCM) is integrated for 5 years at convection-permitting scale to investigate the individual and combined impacts of urbanization-induced changes in land cover pollutant emissions on regional climate Yangtze River Delta (YRD) region eastern China. Simulations urbanization effects reasonably reproduced observed features temperature precipitation YRD region. Urbanization over induces an heat island (UHI) effect, which...
The influences of the aerosol type and concentration relative humidity (RH) on cumulus clouds have been investigated using a two‐dimensional spectral‐bin cloud model. Three simulations are conducted to represent polluted continental, clean marine types. Under same initial dynamic thermodynamic conditions, maritime case results in more intensive radar reflectivity both developing mature stages than continental cases, because enhanced warm rain by collisions ice processes deposition growth due...
Indirect radiative forcing of atmospheric aerosols by modification cloud processes poses the largest uncertainty in climate prediction. We show here a trend increasing deep convective clouds over Pacific Ocean winter from long-term satellite measurements (1984-2005). Simulations with cloud-resolving weather research and forecast model reveal that increased are reproduced when accounting for aerosol effect Asian pollution outflow, which leads to large-scale enhanced convection precipitation...
Using the Weather Research and Forecasting model coupled with a spectral‐bin microphysics (“SBM”) measurements from Atmospheric Radiation Measurement Mobile Facility field campaign in China (AMF‐China), authors examine aerosol indirect effects (AIE) typical cloud regimes of warm cold seasons Southeast China: deep convective clouds (DCC) stratus (SC), respectively. Comparisons two‐moment bulk (“Bulk”) are performed to gain insights for improving schemes estimating AIE weather climate...
The regional distributions of black carbon aerosol (soot) are calculated and the impacts on photolysis frequencies ozone concentrations evaluated in Houston, Texas, using a chemical transport model. Compared with measurements fine particle matter Houston area, simulated daily mean concentration is agreement observations urban sites. Black reduces J [O 3 ( 1 D)] [NO 2 ] planetary boundary layer by 10–30% when air pollution highest area. As result, ground level area decreases 5–20%. Our study...
Cloud droplet effective radius (DER) is generally negatively correlated with aerosol optical depth (AOD) as a proxy of cloud condensation nuclei. In this study, cases positive correlation were found over certain portions the world by analyzing Moderate Resolution Imaging Spectroradiometer (MODIS) satellite products, together general finding that DER may increase or decrease loading depending on environmental conditions. The slope between and AOD driven primarily water vapor amount, which...
Abstract Ten 3‐D cloud‐resolving model simulations and four limited area of an intense mesoscale convective system observed on 23–24 January 2006 during the Tropical Warm Pool‐International Cloud Experiment (TWP‐ICE) are compared with each other radar reflectivity fields dual‐Doppler retrievals vertical wind speeds in attempt to explain published results showing a high bias simulated aloft. This high‐bias from ice water content being large, which is product strong updrafts, although...
Abstract Large‐eddy simulations of mixed‐phase Arctic clouds by 11 different models are analyzed with the goal improving understanding and model representation processes controlling evolution these clouds. In a case based on observations from Indirect Semi‐Direct Aerosol Campaign (ISDAC), it is found that ice number concentration, N i , exerts significant influence cloud structure. Increasing leads to substantial reduction in liquid water path (LWP), agreement earlier studies. contrast...
The aerosol radiative effects (ARE) on the deep convective clouds are investigated by using a spectral‐bin cloud‐resolving model coupled with radiation scheme and an explicit land surface model. sensitivity of cloud properties associated forcing to single‐scattering albedo (SSA) examined. ARE is pronounced for mid‐visible SSA 0.85. Relative case without ARE, fraction optical depth decrease about 18% 20%, respectively. Ice particle number concentrations, liquid water path, ice droplet size...