Results 31 to 40 of about 430 (169)

Prescribing the aerosol effective radiative forcing in the Simple Cloud-Resolving E3SM Atmosphere Model v1 [PDF]

Atmospheric Chemistry and Physics
Aerosol effective radiative forcing critically influences climate projections but remains poorly constrained. Using the Simple Cloud-Resolving E3SM Atmosphere Model (SCREAM) v1 configuration, we assess the sensitivity of the radiative forcing due to ...
N. Mahfouz, H. Beydoun, J. Mülmenstädt, N. Keen, A. C. Varble, L. Bertagna, P. Bogenschutz, A. Bradley, M. W. Christensen, T. C. Clevenger, A. Donahue, J. Fast, J. Foucar, J.-C. Golaz, O. Guba, W. Hannah, B. Hillman, R. Jacob, W. Lin, P.-L. Ma, Y. Qian, B. Singh, C. Terai, H. Wang, M. Wu, K. Zhang, A. Gettelman, M. Taylor, L. R. Leung, P. Caldwell, S. Burrows   +30 more
doaj   +1 more source

Separating Physics and Dynamics Grids for Improved Computational Efficiency in Spectral Element Earth System Models

Journal of Advances in Modeling Earth Systems, 2021
Previous studies have shown that atmospheric models with a spectral element grid can benefit from putting physics calculations on a relatively coarse finite volume grid.
Walter M. Hannah, Andrew M. Bradley, Oksana Guba, Qi Tang, Jean‐Christophe Golaz, Jon Wolfe   +5 more
doaj   +1 more source

Improving Time Step Convergence in an Atmosphere Model With Simplified Physics: The Impacts of Closure Assumption and Process Coupling

Journal of Advances in Modeling Earth Systems, 2020
Convergence testing is a common practice in the development of dynamical cores of atmospheric models but is not as often exercised for the parameterization of subgrid physics.
Hui Wan, Carol S. Woodward, Shixuan Zhang, Christopher J. Vogl, Panos Stinis, David J. Gardner, Philip J. Rasch, Xubin Zeng, Vincent E. Larson, Balwinder Singh   +9 more
doaj   +1 more source

Evaluating the Simulation of CONUS Precipitation by Storm Type in E3SM

Geophysical Research Letters, 2023
AbstractConventional low‐resolution (LR) climate models, including the Energy Exascale Earth System Model (E3SMv1), have well‐known biases in simulating the frequency, intensity, and timing of precipitation. Approaches to next‐generation E3SM, whether the high‐resolution (HR) or multiscale modeling framework (MMF) configuration, improve the simulation ...
K. A. Reed, A. M. Stansfield, W.‐C. Hsu, G. J. Kooperman, A. A. Akinsanola, W. M. Hannah, A. G. Pendergrass, B. Medeiros   +7 more
openaire   +2 more sources

Regional and Teleconnected Impacts of Solar Radiation‐Topography Interaction Over the Tibetan Plateau

Geophysical Research Letters, 2023
Solar radiation‐topography interaction plays an important role in surface energy balance over the Tibetan Plateau (TP). However, the impacts of such interaction over the TP on climate locally and in the Asian regions remain unclear.
Dalei Hao, Gautam Bisht, Yu Gu, L. Ruby Leung   +3 more
doaj   +1 more source

Strong Sensitivity of Simulated Biomass Burning Aerosol Transport and Radiative Effects Over the South Atlantic to Carbonaceous Aerosol Aging and Particle Density

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 11, 16 June 2026.
Abstract Biomass burning aerosol (BBA) impacts climate through aerosol‐cloud‐radiation interactions, but models disagree on the sign and magnitude of BBA radiative effects. We quantify the sensitivity of BBA radiative effects and transport to three BBA‐relevant processes and properties: parameterized oxidative aging of organic aerosol (OA), a combined ...
Kate Johnson, Eric Giuffrida, Paquita Zuidema, Arthur J. Sedlacek III., Ernie R. Lewis, Mira Pöhlker, Christopher Pöhlker, Baseerat Romshoo, Ben T. Johnson, Hamish Gordon   +9 more
wiley   +1 more source

The Energy Exascale Earth System Model Simulations With High Vertical Resolution in the Lower Troposphere

Journal of Advances in Modeling Earth Systems, 2021
General circulation models (GCMs) are typically run with coarse vertical resolution. For example, the Energy Exascale Earth System Model (E3SM) has a vertical resolution of about 200 m in the boundary layer, which is far too coarse to resolve sharp ...
Peter A. Bogenschutz, Takanobu Yamaguchi, Hsiang‐He Lee   +2 more
doaj   +1 more source

What Do Latest CMIP6 Global Climate Models Say About Future Arctic Sea Ice Coverage Changes?

International Journal of Climatology, Volume 46, Issue 7, 15 June 2026.
Modelling of sea ice dynamics has significantly improved between CMIP5 and CMIP6, with nearly three times as many models capturing realistic annual variability in sea ice extent (SIE). What we previously thought was a non‐linear pattern of low SIE observations in 2007–2010 that would continue throughout time now appears to be non‐record‐setting lows in
Jessica L. Matthews, Siddharth Chaudhary, Muying Wang, Ge Peng, Walter N. Meier   +4 more
wiley   +1 more source

The Implementation of Framework for Improvement by Vertical Enhancement Into Energy Exascale Earth System Model

Journal of Advances in Modeling Earth Systems, 2021
The low cloud bias in global climate models (GCMs) remains an unsolved problem. Coarse vertical resolution in GCMs has been suggested to be a significant cause of low cloud bias because planetary boundary layer parameterizations cannot resolve sharp ...
Hsiang‐He Lee, Peter Bogenschutz, Takanobu Yamaguchi   +2 more
doaj   +1 more source

Three Generations of NARCliM: Evaluation of Precipitation, Temperature and Their Extremes Over the CORDEX Australasia Domain

International Journal of Climatology, Volume 46, Issue 7, 15 June 2026.
The NSW and Australian Regional Climate Modelling Version 2.0 (NARCliM2.0) builds on NARCliM1.0 and 1.5 to deliver improved regional climate simulations. This study provides the first comprehensive evaluation of NARCliM2.0 against its predecessors, assessing individual model skill in reproducing mean and extreme climate.
Fei Ji, Moutassem El Rafei, Giovanni Di Virgilio, Jatin Kala, Jason P. Evans, Julia Andrys, Eugene Tam, Stephen White, Dipayan Choudhury, Rishav Goyal, Carlos Rocha, Yue Li, Matthew L. Riley   +12 more
wiley   +1 more source