A5100671104- Atmospheric chemistry and aerosols
- Atmospheric aerosols and clouds
- Atmospheric and Environmental Gas Dynamics
- Atmospheric Ozone and Climate
- Climate variability and models
- Meteorological Phenomena and Simulations
- Aeolian processes and effects
- Air Quality and Health Impacts
- Radiomics and Machine Learning in Medical Imaging
- Fire effects on ecosystems
- Air Quality Monitoring and Forecasting
- Plant Water Relations and Carbon Dynamics
- Marine Bivalve and Aquaculture Studies
- Geology and Paleoclimatology Research
- Geophysics and Gravity Measurements
- Cryospheric studies and observations
- Ionosphere and magnetosphere dynamics
- Hydrocarbon exploration and reservoir analysis
- Environmental Changes in China
- Environmental and Agricultural Sciences
- Particle Dynamics in Fluid Flows
- African history and culture analysis
- Land Use and Ecosystem Services
- Hydrology and Drought Analysis
- Remote Sensing and Land Use
Pacific Northwest National Laboratory
2016-2025
Chinese Research Academy of Environmental Sciences
2010-2025
China Meteorological Administration
2018-2025
Lanzhou Jiaotong University
2020-2025
Jiangsu Province Hospital
2024
Nanjing Medical University
2024
Chinese Academy of Sciences
2006-2024
Ministry of Industry and Information Technology
2024
Harbin Institute of Technology
2021-2024
Guangdong University of Technology
2024
Abstract. We report on the AeroCom Phase II direct aerosol effect (DAE) experiment where 16 detailed global models have been used to simulate changes in distribution over industrial era. All estimated radiative forcing (RF) of anthropogenic DAE, and taken into account sulphate, black carbon (BC) organic aerosols (OA) from fossil fuel, biofuel, biomass burning emissions. In addition several simulated DAE nitrate influenced secondary (SOA). The model all-sky RF total has a range −0.58 −0.02...
This work documents the first version of U.S. Department Energy (DOE) new Exascale Earth System Model (E3SMv1). We focus on standard resolution fully coupled physical model designed to address DOE mission-relevant water cycle questions. Its components include atmosphere and land (110-km grid spacing), ocean sea ice (60 km in midlatitudes 30 at equator poles), river transport (55 km) models. base configuration will also serve as a foundation for additional configurations exploring higher...
<strong class="journal-contentHeaderColor">Abstract.</strong> This paper evaluates the current status of global modeling organic aerosol (OA) in troposphere and analyzes differences between models as well observations. Thirty-one chemistry transport (CTMs) general circulation (GCMs) have participated this intercomparison, framework AeroCom phase II. The simulation OA varies greatly terms magnitude primary emissions, secondary (SOA) formation, number species used (2 to 62), complexity...
Abstract. This paper introduces and evaluates the second version of global aerosol-climate model ECHAM-HAM. Major changes have been brought into model, including new parameterizations for aerosol nucleation water uptake, an explicit treatment secondary organic aerosols, modified emission calculations sea salt mineral dust, coupling microphysics to a two-moment stratiform cloud scheme, alternative wet scavenging parameterizations. These revisions extend model's capability represent details...
Abstract The Energy Exascale Earth System Model Atmosphere version 1, the atmospheric component of Department Energy's is described. model began as a fork well‐known Community Model, but it has evolved in new ways, and coding, performance, resolution, physical processes (primarily cloud aerosols formulations), testing development procedures now differ significantly. Vertical resolution was increased (from 30 to 72 layers), top extended 60 km (~0.1 hPa). A simple ozone photochemistry predicts...
The Max‐Planck‐Institute Aerosol Climatology version 1 (MAC‐v1) is introduced. It describes the optical properties of tropospheric aerosols on monthly timescales and with global coverage at a spatial resolution 1° in latitude longitude. By providing aerosol radiative for any wavelength solar (or shortwave) terrestrial longwave) radiation spectrum, as needed transfer applications, this MAC‐v1 data set lends itself to simplified computationally efficient representations climate studies....
Abstract. The impact of black carbon (BC) aerosols on the global radiation balance is not well constrained. Here twelve aerosol models are used to show that at least 20% present uncertainty in modeled BC direct radiative forcing (RF) due diversity simulated vertical profile mass. Results from phases 1 and 2 model intercomparison project (AeroCom). Additionally, a significant fraction variability shown come high altitudes, as, globally, more than 40% total RF exerted above 5 km. emission...
Aerosol indirect effects have remained the largest uncertainty in estimates of radiative forcing past and future climate change. Observational constraints on cloud lifetime are particularly challenging since it is difficult to separate aerosol from meteorological influences. Here we use three global models, including a multi‐scale aerosol‐climate model PNNL‐MMF, show that dependence probability precipitation loading, termed frequency susceptibility ( S pop ), good measure liquid water path...
Abstract This study provides an overview of the coupled high‐resolution Version 1 Energy Exascale Earth System Model (E3SMv1) and documents characteristics a 50‐year‐long control simulation with time‐invariant 1950 forcings following HighResMIP protocol. In terms global root‐mean‐squared error metrics, this is generally superior to results from low‐resolution configuration E3SMv1 (due resolution, tuning changes, possibly initialization procedure) compares favorably models in CMIP5 ensemble....
Abstract. Atmospheric black carbon (BC) absorbs solar radiation, and exacerbates global warming through exerting positive radiative forcing (RF). However, the contribution of BC to ongoing changes in climate is under debate. Anthropogenic emissions, resulting distribution concentration, are highly uncertain. In particular, long-range transport processes affecting atmospheric lifetime poorly understood. Here we discuss whether recent assessments may have overestimated present-day remote...
A large number of processes are involved in the chain from emissions aerosol precursor gases and primary particles to impacts on cloud radiative forcing. Those manifest a relationships that can be expressed as factors dlnX/dlnY driving effects These include between condensation nuclei (CCN) concentration emissions, droplet CCN concentration, fraction number, optical depth forcing depth. The relationship further decomposed into sum two terms involving effective radius liquid water path with...
Abstract The new Energy Exascale Earth System Model Version 1 (E3SMv1) developed for the U.S. Department of has significant treatments aerosols and light‐absorbing snow impurities as well their interactions with clouds radiation. This study describes seven sets aerosol‐related (involving emissions, particle formation, aerosol transport, wet scavenging resuspension, radiative transfer) examines how they affect global forcing in E3SMv1. Altogether, give a reduced total (−1.6 W/m 2 )...
Abstract This study provides comprehensive insight into the notable differences in clouds and precipitation simulated by Energy Exascale Earth System Model Atmosphere version 0 1 (EAMv1). Several sensitivity experiments are conducted to isolate impact of changes model physics, resolution, parameter choices on these differences. The overall improvement EAMv1 is primarily attributed introduction a simplified third‐order turbulence parameterization Cloud Layers Unified By Binormals (along with...
Secondary organic aerosols (SOA) are large contributors to fine-particle loadings and radiative forcing but often represented crudely in global models. We have implemented three new detailed SOA treatments within the Community Atmosphere Model version 5 (CAM5) that allow us compare semivolatile versus nonvolatile (based on some of latest experimental findings) investigate effects gas-phase fragmentation reactions. The also track from biomass burning biofuel, fossil fuel, biogenic sources....
Abstract This work documents version two of the Department Energy's Energy Exascale Earth System Model (E3SM). E3SMv2 is a significant evolution from its predecessor E3SMv1, resulting in model that nearly twice as fast and with simulated climate improved many metrics. We describe physical lower horizontal resolution configuration consisting 110 km atmosphere, 165 land, 0.5° river routing model, an ocean sea ice mesh spacing varying between 60 mid‐latitudes 30 at equator poles. The...
Abstract Atmospheric ice‐nucleating particles (INPs) play a critical role in cloud freezing processes, with important implications for precipitation formation and radiative properties, thus weather climate. Additionally, INP emissions respond to changes the Earth System climate, example, desertification, agricultural practices, fires, therefore may introduce climate feedbacks that are still poorly understood. As knowledge of nature origins INPs has advanced, regional global weather, system...
A key challenge in aerosol pollution studies and climate change assessment is to understand how atmospheric particles are initially formed
Abstract. Nucleation from the gas phase is an important source of aerosol particles in Earth's atmosphere, contributing to number cloud condensation nuclei, which form droplets. We have implemented aerosol-climate model ECHAM5-HAM a new scheme for neutral and charged nucleation sulfuric acid water based on laboratory data, organic compound using parametrization cluster activation field measurements. give details implementation, compare results with observations, investigate role individual...
Abstract. Many of the next generation global climate models will include aerosol schemes which explicitly simulate microphysical processes that determine particle size distribution. These enable optical properties and cloud condensation nuclei (CCN) concentrations to be determined by fundamental processes, should lead a more physically based simulation direct indirect radiative forcings. This study examines variation in distribution simulated 12 microphysics quantify model diversity identify...
Significance Uncertainties in the strength of aerosol–cloud interactions drive current uncertainty anthropogenic forcing climate. Previous studies have highlighted shortcomings using satellite data for determining forcing, which underestimate aerosol forcing. This work demonstrates that component radiative from due to instantaneous effect on cloud reflectivity (RFaci) can be calculated within 20%, only present-day observations variability and properties, provided is known. The model results...
Abstract The ability of 11 models in simulating the aerosol vertical distribution from regional to global scales, as part second phase AeroCom model intercomparison initiative (AeroCom II), is assessed and compared results first phase. evaluation performed using a monthly gridded data set extinction profiles built for this purpose CALIOP (Cloud‐Aerosol Lidar with Orthogonal Polarization) Layer Product 3.01. Results over 12 subcontinental regions show that five improved, whereas three...
Abstract. Nudging as an assimilation technique has seen increased use in recent years the development and evaluation of climate models. Constraining simulated wind temperature fields using global weather reanalysis facilitates more straightforward comparison between simulation observation, reduces uncertainties associated with natural variabilities large-scale circulation. On other hand, forcing introduced by nudging can be strong enough to change basic characteristics model climate. In...
Abstract Optically thick smoke aerosol plumes originating from biomass burning (BB) in the southwestern African Savanna during austral spring are transported westward by free tropospheric winds to primarily overlie vast stretches of stratocumulus cloud decks southeast Atlantic. We evaluated simulations long‐range transport BB Goddard Earth Observing System (GEOS‐5) and four other global models over complete South African‐Atlantic region using Cloud‐Aerosol Lidar with Orthogonal Polarization...
Abstract. In this study the effect of dust aerosol on upper tropospheric cirrus clouds through heterogeneous ice nucleation is investigated in Community Atmospheric Model version 5 (CAM5) with two parameterizations. Both parameterizations consider homogeneous and competition between mechanisms clouds, but differ significantly number concentration nuclei (IN) from dust. Heterogeneous reduces occurrence frequency thus crystal Northern Hemisphere (NH) compared to simulations pure nucleation....