A5088254301- Atmospheric and Environmental Gas Dynamics
- Meteorological Phenomena and Simulations
- Distributed and Parallel Computing Systems
- Scientific Computing and Data Management
- Climate variability and models
- Astro and Planetary Science
- Atmospheric Ozone and Climate
- Geomagnetism and Paleomagnetism Studies
- Atmospheric chemistry and aerosols
- Atmospheric aerosols and clouds
- Advanced Data Storage Technologies
- Precipitation Measurement and Analysis
- Solar and Space Plasma Dynamics
- Geophysics and Gravity Measurements
- Parallel Computing and Optimization Techniques
- Scientific Research and Discoveries
- Big Data Technologies and Applications
- Stellar, planetary, and galactic studies
- Data Management and Algorithms
- Planetary Science and Exploration
- Cryospheric studies and observations
- Software Testing and Debugging Techniques
- Air Quality Monitoring and Forecasting
- Characterization and Applications of Magnetic Nanoparticles
- Geology and Paleoclimatology Research
Goddard Space Flight Center
2014-2023
Goddard Institute for Space Studies
2014
University of Maryland, College Park
2004
General Sciences (United States)
2004
Argonne National Laboratory
2004
Earth System Science Interdisciplinary Center
2004
Science Applications International Corporation (United States)
2004
National Institutes of Health
2004
Joint Institute for Laboratory Astrophysics
1998-2002
University of Colorado Boulder
1998-2002
Abstract We present a description of the ModelE2 version Goddard Institute for Space Studies (GISS) General Circulation Model (GCM) and configurations used in simulations performed Coupled Intercomparison Project Phase 5 (CMIP5). use six variations related to treatment atmospheric composition, calculation aerosol indirect effects, ocean model component. Specifically, we test difference between models that have noninteractive where radiatively important aerosols ozone are prescribed from...
This paper describes the GISS-E2.1 contribution to Coupled Model Intercomparison Project, Phase 6 (CMIP6). model version differs from predecessor (GISS-E2) chiefly due parameterization improvements atmospheric and ocean components, while keeping resolution same. skill when compared modern era climatologies is significantly higher than in previous versions. Additionally, updates forcings have a material impact on results. In particular, there been specific representations of modes variability...
We present the results of a series numerical experiments that investigate transport magnetic fields by turbulent penetrative compressible convection. find flux is preferentially transported downward out convecting region and stored in stably stratified below. This pumping mechanism believed to be crucial component for operation large-scale solar interface dynamo since it may responsible from convection zone stable overshoot region. The high-resolution three-dimensional simulations show...
Present-day Venus is an inhospitable place with surface temperatures approaching 750K and atmosphere over 90 times as thick present day Earth's. Billions of years ago the picture may have been very different. We created a suite 3D climate simulations using topographic data from Magellan mission, solar spectral irradiance estimates for 2.9 0.715 billion ago, orbital parameters, ocean volume consistent current theory measurements, atmospheric composition estimated early Venus. Using these...
Abstract Observations of climate change during the CMIP5 extended historical period (1850–2012) are compared to trends simulated by six versions NASA Goddard Institute for Space Studies ModelE2 Earth System Model. The models constructed from three atmospheric general circulation model, distinguished their treatment composition and aerosol indirect effect, combined with two ocean models, HYCOM Russell. Forcings that perturb model described. Five‐member ensemble averages each simulate surface...
Abstract We examine the anthropogenically forced climate response for 21st century representative concentration pathway (RCP) emission scenarios and their extensions period 2101–2500. The experiments were performed with ModelE2, a new version of NASA Goddard Institute Space Sciences (GISS) coupled general circulation model that includes three different versions atmospheric composition components: noninteractive (NINT) prescribed tuned aerosol indirect effect (AIE), TCAD fully interactive...
Abstract Simulations of the CMIP6 historical period 1850–2014, characterized by emergence anthropogenic climate drivers like greenhouse gases, are presented for different configurations NASA Goddard Institute Space Studies (GISS) Earth System ModelE2.1. The GISS‐E2.1 ensembles more sensitive to gas forcing than their CMIP5 predecessors (GISS‐E2) but warm less during recent decades due a reduction that is attributed greater longwave opacity in pre‐industrial simulations. This results an...
Abstract A 3D growth model is used to simulate pristine ice crystals, which are aggregated using a collection algorithm create larger, multicrystal particles. The simulated crystals and aggregates have mass-versus-size fractal properties that consistent with field observations. growth/collection generate large database of snow particles, the single-scattering each particle computed discrete dipole approximation account for nonspherical geometries At 13.6 35.5 GHz, bulk radar reflectivities...
Resolving Orbital and Climate Keys of Earth Extraterrestrial Environments with Dynamics (ROCKE-3D) is a 3-Dimensional General Circulation Model (GCM) developed at the NASA Goddard Institute for Space Studies modeling atmospheres Solar System exoplanetary terrestrial planets. Its parent model, known as ModelE2 (Schmidt et al. 2014), used to simulate modern 21st Century near-term paleo-Earth climates. ROCKE-3D an ongoing effort expand capabilities handle broader range atmospheric conditions...
Abstract. Global modeling of atmospheric chemistry is a grand computational challenge because the need to simulate large coupled systems ∼100–1000 chemical species interacting with transport on all scales. Offline models (CTMs), where continuity equations are solved using meteorological data as input, have usability advantages and important vehicles for developing knowledge that can then be transferred Earth system models. However, they generally not been designed take advantage massively...
Abstract This paper presents the response to anthropogenic forcing in GISS‐E2.1 climate models for 21st century Shared Socioeconomic Pathways emission scenarios within Coupled Model Intercomparison Project Phase 6 (CMIP6). The experiments were performed using an updated and improved version of NASA Goddard Institute Space Studies (GISS) coupled general circulation model that includes two different versions atmospheric composition: A non‐interactive (NINT) with prescribed composition a tuned...
We present the results of a series high-resolution, three-dimensional numerical experiments that investigate nature turbulent compressible convective motions extending from convection zone into stable layer below. In such convection, converging flows in near-surface cellular convecting network create strong downflowing plumes can traverse multiple scale heights zone. Such structures continue their downward beyond region, piercing layer, where they are decelerated by buoyancy braking. If...
Abstract. Modeling atmospheric chemistry at fine resolution globally is computationally expensive; the capability to focus on specific geographic regions using a multiscale grid desirable. Here, we develop, validate, and demonstrate stretched grids in GEOS-Chem model its high-performance implementation (GCHP). These are specified runtime by four parameters that offer users nimble control of region refined refinement. We validate stretched-grid simulation versus global cubed-sphere...
Abstract. We describe a new generation of the high-performance GEOS-Chem (GCHP) global model atmospheric composition developed as part version 13 series. is an open-source grid-independent that can be used online within meteorological simulation or offline using archived data. GCHP implementation driven by NASA Goddard Earth Observing System (GEOS) data for massively parallel simulations. Version offers major advances in ease use, computational performance, versatility, resolution, and...
A plausible scenario for solar dynamo action is that the large-scale organized toroidal magnetic field generated by of strong radial shear at base convection zone, whereas weaker poloidal regenerated cyclonic throughout zone. We show, using high-resolution three-dimensional numerical simulations, required transport from zone to overshoot region can be achieved on a convective rather than diffusive timescale pumping mechanism in turbulent penetrative compressible convection. layer initially...
Over the past 30 years, most climate models have grown from relatively simple representations of a few atmospheric processes to complex multidisciplinary systems. Computer infrastructure over that period has gone punchcard mainframes modern parallel clusters. Model implementations become complex, brittle, and increasingly difficult extend maintain. Verification for model rely almost exclusively on some combination detailed analyses output full simulations system-level regression tests....
The Earth System Prediction Suite (ESPS) is a collection of flagship U.S. weather and climate models model components that are being instrumented to conform interoperability conventions, documented follow metadata standards, made available either under open source terms or credentialed users. ESPS represents culmination efforts create common system architecture, the advent increasingly coordinated development activities in component interfaces based on Modeling Framework (ESMF),...
The nearby exoplanet Proxima Centauri b will be a prime future target for characterization, despite questions about its retention of water. Climate models with static oceans suggest that an Earth-like could harbor small dayside region surface liquid water at fairly warm temperatures weak instellation. We present the first 3-dimensional climate simulations dynamic ocean. find ocean-covered have much broader area but colder than previously suggested, due to ocean heat transport and depression...
Small-amplitude Boussinesq convection in a plane layer with rigid, conducting boundaries rotating uniformly about vertical axis is studied. A horizontally unbounded modeled by periodic boundary conditions and the effect of mean-flow suppression distant sidewalls considered. An exact linear stability calculation partitions parameter space into regions stationary oscillatory convective onset. In regime, critical Taylor number angle for onset K\"uppers-Lortz instability are determined as...
We present a large ensemble of simulations an Earth-like world with increasing insolation and rotation rate. Unlike previous work utilizing idealized aquaplanet configurations we focus our on modern topography. The orbital period is the same as Earth, but zero obliquity eccentricity. atmosphere 1 bar N$_{2}$-dominated CO$_{2}$=400 ppmv CH$_{4}$=1 ppmv. include two types oceans; one without ocean heat transport (OHT) between grid cells has been commonly used in exoplanet literature, while...
The introduction of the Unified Forecast System (UFS) framework as an open and collaborative model development platform at National Oceanic Atmospheric Administration (NOAA) enabled a fundamental paradigm shift in next-generation coupled systems for numerical prediction weather atmospheric composition. recent operational implementation major UFS-based hurricane (HAFS v1 & 2) air quality (AQM v7) forecasting anticipated new wave Earth system models that will fundamentally reshape...
Abstract. We present the second generation of ROCKE-3D (Resolving Orbital and Climate Keys Earth Extraterrestrial Environments with Dynamics), a generalized 3-dimensional General Circulation Model (GCM) for use in Solar System exoplanetary simulations rocky planet climates. version 2.0 is descendant ModelE2.1, flagship NASA Goddard Institute Space Studies (GISS) used most recent Intergovernmental Panel Change (IPCC) assessments. continuous effort to expand capabilities GISS ModelE handle...