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

Journal Article · · Journal of Advances in Modeling Earth Systems
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2]
  1. Atmospheric, Earth, and Energy Division Lawrence Livermore National Laboratory Livermore CA USA
  2. Cooperative Institute for Research in Environmental Sciences University of Colorado Boulder CO USA, NOAA Earth System Research Laboratories Chemical Sciences Laboratory Boulder CO USA
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Abstract 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 temperature and moisture gradients often found at the top of subtropical stratocumulus layers. This work aims to ameliorate the low cloud problem by implementing a new computational method, the Framework for Improvement by Vertical Enhancement (FIVE), into the Energy Exascale Earth System Model (E3SM). Three physics schemes representing microphysics, radiation, and turbulence as well as vertical advection are interfaced to vertically enhanced physics (VEP), which allows for these processes to be computed on a higher vertical resolution grid compared to the rest of the E3SM model. We demonstrate the better representation of subtropical boundary layer clouds with FIVE while limiting additional computational cost from the increased number of levels. When the vertical resolution approaches the large eddy simulation‐like vertical resolution in VEP, the climatological low cloud amount shows a significant increase of more than 30% in the southeastern Pacific Ocean. Using FIVE to improve the representation of low‐level clouds does not come with any negative side effects associated with the simulation of mid‐ and high‐level cloud and precipitation, that can occur when running the full model at higher vertical resolution.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Univ. of Colorado, Boulder, CO (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC52-07NA27344; SC0018650
OSTI ID:
1797607
Report Number(s):
LLNL-JRNL--810691; e2020MS002240
Journal Information:
Journal of Advances in Modeling Earth Systems, Journal Name: Journal of Advances in Modeling Earth Systems Journal Issue: 6 Vol. 13; ISSN 1942-2466
Publisher:
American Geophysical Union (AGU)Copyright Statement
Country of Publication:
United States
Language:
English

References (46)

CLUBB as a unified cloud parameterization: Opportunities and challenges journal June 2015
The effect of large-scale model time step and multiscale coupling frequency on cloud climatology, vertical structure, and rainfall extremes in a superparameterized GCM: EFFECT OF GLOBAL MODEL TIMESTEP IN SPCAM journal December 2015
Framework for improvement by vertical enhancement: A simple approach to improve representation of low and high-level clouds in large-scale models: FRAMEWORK FOR VERTICAL MESH REFINEMENT journal March 2017
The GASS/EUCLIPSE model intercomparison of the stratocumulus transition as observed during ASTEX: LES results: Astex SCU Transition-LES Results journal July 2013
The effect of time steps and time-scales on parametrization suites journal August 2012
Models of cloud-topped mixed layers under a strong inversion journal July 1968
An intercomparison of radiatively driven entrainment and turbulence in a smoke cloud, as simulated by different numerical models journal January 1999
A cloud resolving model as a cloud parameterization in the NCAR Community Climate System Model: Preliminary results journal September 2001
Marine boundary layer clouds at the heart of tropical cloud feedback uncertainties in climate models journal January 2005
Radiative forcing by long-lived greenhouse gases: Calculations with the AER radiative transfer models journal January 2008
An analysis of cloud cover in multiscale modeling framework global climate model simulations using 4 and 1 km horizontal grids journal January 2010
The ‘too few, too bright’ tropical low-cloud problem in CMIP5 models: TOO FEW TOO BRIGHT LOW-CLOUDS journal November 2012
Evaluation of Clouds in Version 1 of the E3SM Atmosphere Model With Satellite Simulators journal May 2019
The DOE E3SM Coupled Model Version 1: Overview and Evaluation at Standard Resolution journal July 2019
An Overview of the Atmospheric Component of the Energy Exascale Earth System Model journal August 2019
The Energy Exascale Earth System Model Simulations With High Vertical Resolution in the Lower Troposphere journal June 2021
Radiative transfer for inhomogeneous atmospheres: RRTM, a validated correlated-k model for the longwave journal July 1997
Intercomparison and interpretation of climate feedback processes in 19 atmospheric general circulation models journal January 1990
Spread in model climate sensitivity traced to atmospheric convective mixing journal January 2014
Sensitivity of climate simulations to the parameterization of cumulus convection in the Canadian climate centre general circulation model journal September 1995
The Seasonal Cycle of Low Stratiform Clouds journal August 1993
Coupling Cloud Processes with the Large-Scale Dynamics Using the Cloud-Resolving Convection Parameterization (CRCP) journal May 2001
A PDF-Based Model for Boundary Layer Clouds. Part I: Method and Model Description journal December 2002
A “Vertically Lagrangian” Finite-Volume Dynamical Core for Global Models journal October 2004
Elucidating Model Inadequacies in a Cloud Parameterization by Use of an Ensemble-Based Calibration Framework journal December 2007
A New Two-Moment Bulk Stratiform Cloud Microphysics Scheme in the Community Atmosphere Model, Version 3 (CAM3). Part I: Description and Numerical Tests journal August 2008
A New Moist Turbulence Parameterization in the Community Atmosphere Model journal June 2009
A Cloud-Resolving Model with an Adaptive Vertical Grid for Boundary Layer Clouds journal May 2011
COSP: Satellite simulation software for model assessment journal August 2011
Breaking the Cloud Parameterization Deadlock journal November 2003
The Community Earth System Model: A Framework for Collaborative Research journal September 2013
Simulations of the Atmospheric General Circulation Using a Cloud-Resolving Model as a Superparameterization of Physical Processes journal July 2005
Southeast Pacific Stratocumulus in the Community Atmosphere Model journal September 2012
Higher-Order Turbulence Closure and Its Impact on Climate Simulations in the Community Atmosphere Model journal December 2013
Multivariate Probability Density Functions with Dynamics in the GFDL Atmospheric General Circulation Model: Global Tests journal March 2014
Advanced Two-Moment Bulk Microphysics for Global Models. Part II: Global Model Solutions and Aerosol–Cloud Interactions journal February 2015
Improved Low-Cloud Simulation from the Community Atmosphere Model with an Advanced Third-Order Turbulence Closure journal July 2015
PDF Parameterization of Boundary Layer Clouds in Models with Horizontal Grid Spacings from 2 to 16 km journal January 2012
Using Probability Density Functions to Derive Consistent Closure Relationships among Higher-Order Moments journal April 2005
Evaluation of Large-Eddy Simulations via Observations of Nocturnal Marine Stratocumulus journal June 2005
A monotonic and positive–definite filter for a Semi-Lagrangian Inherently Conserving and Efficient (SLICE) scheme
  • Zerroukat, Mohamed; Wood, Nigel; Staniforth, Andrew
  • Quarterly Journal of the Royal Meteorological Society, Vol. 131, Issue 611 https://doi.org/10.1256/qj.04.97
journal October 2005
Towards Global Large Eddy Simulation: Super-Parameterization Revisited journal January 2016
Regionally refined test bed in E3SM atmosphere model version 1 (EAMv1) and applications for high-resolution modeling journal January 2019
The E3SM version 1 single-column model journal January 2020
Unified parameterization of the planetary boundary layer and shallow convection with a higher-order turbulence closure in the Community Atmosphere Model: single-column experiments journal January 2012
A unified parameterization of clouds and turbulence using CLUBB and subcolumns in the Community Atmosphere Model journal January 2015

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