A5074084121- Meteorological Phenomena and Simulations
- Climate variability and models
- Atmospheric chemistry and aerosols
- Atmospheric and Environmental Gas Dynamics
- Atmospheric aerosols and clouds
- Atmospheric Ozone and Climate
- Oceanographic and Atmospheric Processes
- Air Quality and Health Impacts
- Air Quality Monitoring and Forecasting
- Fluid Dynamics and Turbulent Flows
- Arctic and Antarctic ice dynamics
- Smart Materials for Construction
- COVID-19 impact on air quality
- Landslides and related hazards
- Computational Fluid Dynamics and Aerodynamics
- Recycling and Waste Management Techniques
- Remote Sensing and Land Use
- Thermochemical Biomass Conversion Processes
- Environmental Sustainability and Technology
- Climate Change Policy and Economics
- Climate Change and Health Impacts
- Climate Change and Geoengineering
- Plant Water Relations and Carbon Dynamics
- Heavy metals in environment
- Aeolian processes and effects
California Institute of Technology
2019-2025
Institute of Atmospheric Physics
2023
Chinese Academy of Sciences
2023
NOAA Geophysical Fluid Dynamics Laboratory
2018
Princeton University
2014-2018
Peking University
2014-2015
Abstract In Part 2 of this two‐part paper, documentation is provided key aspects a version the AM4.0/LM4.0 atmosphere/land model that will serve as base for new set climate and Earth system models (CM4 ESM4) under development at NOAA's Geophysical Fluid Dynamics Laboratory (GFDL). The quality simulation in AMIP (Atmospheric Model Intercomparison Project) mode has been 1. provides components some sensitivities to choices formulation values parameters, highlighting convection parameterization...
Abstract In this two‐part paper, a description is provided of version the AM4.0/LM4.0 atmosphere/land model that will serve as base for new set climate and Earth system models (CM4 ESM4) under development at NOAA's Geophysical Fluid Dynamics Laboratory (GFDL). This version, with roughly 100 km horizontal resolution 33 levels in vertical, contains an aerosol generates fields from emissions “light” chemistry mechanism designed to support but prescribed ozone. Part 1, quality simulation AMIP...
Abstract Advances in high‐performance computing have enabled large‐eddy simulations (LES) of turbulence, convection, and clouds. However, their potential to improve parameterizations global climate models (GCMs) is only beginning be harnessed, with relatively few canonical LES available so far. The purpose this paper begin creating a public library that expands the training data for calibrating evaluating GCM parameterizations. To do so, we use an experimental setup which are driven by...
Abstract The Taklamakan and Gobi Desert (TGD) region has experienced a pronounced increase in summer precipitation, including high-impact extreme events, over recent decades. Despite identifying large-scale circulation changes as key driver of the wetting trend, understanding relative contributions internal variability external forcings remains limited. Here, we approach this problem by using hierarchy numerical simulations, complemented diverse statistical analysis tools. Our results offer...
Abstract. Long-range transport of black carbon (BC) is a growing concern as result the efficiency BC in warming climate and its adverse impact on human health. We study transpacific during HIPPO-3 using combination inverse modeling sensitivity analysis. use GEOS-Chem chemical model adjoint to constrain Asian emissions estimate source over North Pacific. find that different sources dominate Pacific southbound (29 March 2010) northbound (13 April measurements HIPPO-3. While biomass burning...
The Coronavirus Disease 2019 (COVID-19) pandemic led to a widespread reduction in aerosol emissions. Using satellite observations and climate model simulations, we study the underlying mechanisms of large decreases solar clear-sky reflection (3.8 W m
Arctic haze has a distinct seasonal cycle with peak concentrations in winter but pristine conditions summer. It is demonstrated that the Geophysical Fluid Dynamics Laboratory (GFDL) atmospheric general circulation model (AM3) can reproduce observed seasonality of black carbon (BC), an important component haze. The used to study how large-scale and removal drive BC. found despite large shifts pattern, transport BC into varies little throughout year. attributed mostly variations controlling...
Abstract This study examines how aerosol absorption affects the extratropical circulation by analyzing response to a globally uniform increase in black carbon (BC) simulated with an atmospheric general model forced prescribed sea surface temperatures. The includes direct and semidirect effects, but not indirect or cloud-absorption effects. BC-induced heating free troposphere stabilizes midlatitude column, which results less energetic baroclinic eddies thus reduced meridional energy transport...
Abstract. We introduce ClimateMachine, a new open-source atmosphere modeling framework which uses the Julia language and is designed to be scalable on central processing units (CPUs) graphics (GPUs). ClimateMachine common both for coarser-resolution global simulations high-resolution, limited-area large-eddy (LESs). Here, we demonstrate LES configuration of model in canonical benchmark cases atmospheric flows using total energy-conserving nodal discontinuous Galerkin (DG) discretization...
Abstract Despite distinct geographic distributions of top-of-the-atmosphere radiative forcing, anthropogenic greenhouse gases and aerosols have been found to produce similar patterns climate response in atmosphere-and-ocean coupled model simulations. Understanding surface energy flux changes, a crucial pathway by which atmospheric forcing is communicated the ocean, vital bridge explaining full responses these disparate forcings. Here we analyze fast, atmosphere-driven change caused...
Atmospheric simulations of regional land temperature suggest a powerful approach for constraining historical aerosol forcing.
Abstract Using large‐eddy simulations (LES) systematically has the potential to inform parameterizations of subgrid‐scale processes in general circulation models (GCMs), such as turbulence, convection, and clouds. Here we show how LES can be run simulate grid columns GCMs generate across a cross section dynamical regimes. The setup approximately replicates thermodynamic water budgets GCM columns. Resolved horizontal vertical transports heat large‐scale pressure gradients from are prescribed...
Abstract The uncertainty in polar cloud feedbacks calls for process understanding of the response to climate warming. As an initial step toward improved understanding, we investigate seasonal cycle clouds current by adopting a novel modeling framework using large eddy simulations (LES), which explicitly resolve dynamics. Resolved horizontal and vertical advection heat moisture from idealized general circulation model (GCM) are prescribed as forcing LES. LES also forced with sea ice...
Abstract. Long-range transport of black carbon (BC) is a growing concern as result the efficiency BC in warming climate and its adverse impact on human health. We study transpacific during HIPPO-3 using combination inverse modeling sensitivity analysis. use GEOS-Chem chemical model adjoint to constrain Asian emissions estimate source over North Pacific. find that different sources dominate Pacific southbound (29 March 2010) northbound (13 April measurements HIPPO-3. While biomass burning...
Earth and Space Science Open Archive This preprint has been submitted to is under consideration at Journal of Advances in Modeling Systems (JAMES). ESSOAr a venue for early communication or feedback before peer review. Data may be preliminary.Learn more about preprints preprintOpen AccessYou are viewing the latest version by default [v1]A Library Large-eddy Simulations Calibrating Cloud ParameterizationsAuthorsZhaoyiSheniDAkshaySridhariDZhihongTaniDAnnaJarugaiDTapioSchneideriDSee all authors...
Earth and Space Science Open Archive This work has been accepted for publication in Journal of Advances Modeling Systems (JAMES). Version RecordESSOAr is a venue early communication or feedback before peer review. Data may be preliminary. Learn more about preprints. preprintOpen AccessYou are viewing the latest version by default [v2]Seasonal cycle idealized polar clouds: large eddy simulations driven GCMAuthorsXiyueZhangTapioSchneideriDZhaoyiSheniDKyle GPresselIanEisenmaniDSee all authors...
Abstract. We introduce ClimateMachine, a new open-source atmosphere modeling framework using the Julia language to be performance portable on central processing units (CPUs) and graphics (GPUs). ClimateMachine uses common both for coarser-resolution global simulations high-resolution, limited-area large-eddy (LES). Here, we demonstrate LES configuration of model in canonical benchmark cases atmospheric flows, an energy-conserving nodal discontinuous-Galerkin (DG) discretization governing...
The COVID-19 pandemic led to a widespread reduction in aerosol emissions. Anecdotal effects on air quality and visibility were widely reported. Less known are the impacts planetary energy balance. Using satellite observations climate model simulations, we 15 study underlying mechanisms of large, precipitous decreases solar clear-sky reflection (3.8 W m-2 or 7%) optical depth (0.16 32%) over East Asian Marginal Seas March 2020. By separating due meteorology emissions find that about one-third...
Abstract Recent studies develop the SPeedy Algorithm for Radiative TrAnsfer through CloUd Sides (SPARTACUS) to handle influence of horizontal RT on vertical radiative fluxes within an atmospheric column. The present study applies SPARTACUS large eddy simulation (LES)‐generated cloud fields across stratocumulus trade cumulus transition (STCT) regime with coarse and fine resolutions. results show that, as resolution increases, radiation simulations increasingly stronger cloud‐top longwave (LW)...
The arid region of Northwest China and Mongolia (NCM) receives most the precipitation in summer. need for a better understanding synoptic-scale mechanism responsible formation is accentuated by recent wetting trend its implications future hydroclimate change. By conducting hierarchical clustering analysis on an observationally-based daily dataset, we show that there are three distinct patterns over NCM, one which associated with strong western part another eastern part. corresponding...