\documentclass[10pt]{article}

\usepackage{fullpage}
\usepackage{setspace}
\usepackage{parskip}
\usepackage{titlesec}
\usepackage[section]{placeins}
\usepackage{xcolor}
\usepackage{breakcites}
\usepackage{lineno}
\usepackage{hyphenat}





\PassOptionsToPackage{hyphens}{url}
\usepackage[colorlinks = true,
            linkcolor = blue,
            urlcolor  = blue,
            citecolor = blue,
            anchorcolor = blue]{hyperref}
\usepackage{etoolbox}
\makeatletter
\patchcmd\@combinedblfloats{\box\@outputbox}{\unvbox\@outputbox}{}{%
  \errmessage{\noexpand\@combinedblfloats could not be patched}%
}%
\makeatother


\usepackage{natbib}




\renewenvironment{abstract}
  {{\bfseries\noindent{\abstractname}\par\nobreak}\footnotesize}
  {\bigskip}

\titlespacing{\section}{0pt}{*3}{*1}
\titlespacing{\subsection}{0pt}{*2}{*0.5}
\titlespacing{\subsubsection}{0pt}{*1.5}{0pt}


\usepackage{authblk}


\usepackage{graphicx}
\usepackage[space]{grffile}
\usepackage{latexsym}
\usepackage{textcomp}
\usepackage{longtable}
\usepackage{tabulary}
\usepackage{booktabs,array,multirow}
\usepackage{amsfonts,amsmath,amssymb}
\providecommand\citet{\cite}
\providecommand\citep{\cite}
\providecommand\citealt{\cite}
% You can conditionalize code for latexml or normal latex using this.
\newif\iflatexml\latexmlfalse
\providecommand{\tightlist}{\setlength{\itemsep}{0pt}\setlength{\parskip}{0pt}}%

\AtBeginDocument{\DeclareGraphicsExtensions{.pdf,.PDF,.eps,.EPS,.png,.PNG,.tif,.TIF,.jpg,.JPG,.jpeg,.JPEG}}

\usepackage[utf8]{inputenc}
\usepackage[ngerman,english]{babel}



\usepackage{float}








\begin{document}

\title{The DOE E3SM Model Version 2: Overview of the physical model and initial
model evaluation}



\author[1,1]{Jean-Christophe Golaz}%
\author[2,2]{Luke P. Van Roekel}%
\author[1,1]{Xue Zheng}%
\author[2,2]{Andrew Roberts}%
\author[2,2]{Jonathan D Wolfe}%
\author[3,3]{Wuyin Lin}%
\author[4,4]{Andrew Bradley}%
\author[1,1]{Qi Tang}%
\author[2,2]{Mathew E Maltrud}%
\author[1,1]{Ryan M Forsyth}%
\author[1,1]{Chengzhu Zhang}%
\author[5,5]{Tian Zhou}%
\author[5,5]{Kai Zhang}%
\author[6,6]{Charles Sutton Zender}%
\author[5,5]{Mingxuan Wu}%
\author[5,5]{Hailong Wang}%
\author[2,2]{Adrian K Turner}%
\author[5,5]{Balwinder Singh}%
\author[7,7]{Jadwiga H. Richter}%
\author[1,1]{Yi Qin}%
\author[2,2]{Mark R. Petersen}%
\author[8,8]{Azamat Mametjanov}%
\author[5,5]{Po-Lun Ma}%
\author[9,9]{Vincent E Larson}%
\author[8,8]{Jayesh Krishna}%
\author[10,10]{Noel D. Keen}%
\author[2,2]{Nicole Jeffery}%
\author[2,2]{Elizabeth C Hunke}%
\author[1,1]{Walter M. Hannah}%
\author[4,4]{Oksana Guba}%
\author[9,9]{Brian M Griffin}%
\author[8,8]{Yan Feng}%
\author[2,2]{Darren Engwirda}%
\author[10,10]{Alan V. Di Vittorio}%
\author[11,11]{Cheng Dang}%
\author[2,2]{LeAnn Conlon}%
\author[7,7]{Chih-Chieh Chen}%
\author[12,12]{Michael Brunke}%
\author[5,5]{Gautam Bisht}%
\author[2,2]{James J Benedict}%
\author[2,2]{Xylar S Asay-Davis}%
\author[1,1]{Yuying Zhang}%
\author[12,12]{Xubin Zeng}%
\author[1,1]{Shaocheng Xie}%
\author[2,2]{Phillip Justin Wolfram Jr.}%
\author[1,1]{Tom Vo}%
\author[2,2]{Milena Veneziani}%
\author[5,5]{Teklu Kidane Tesfa}%
\author[13,13]{Sarat Sreepathi}%
\author[4,4]{Andrew G. Salinger}%
\author[6,6]{Michael J. Prather}%
\author[13,13]{Salil Mahajan}%
\author[14,14]{Qing Li}%
\author[2,2]{Philip W Jones}%
\author[8,8]{Robert L Jacob}%
\author[15,15]{J. E. Jack Reeves Eyre}%
\author[9,9]{Gunther W Huebler}%
\author[16,16]{Xianglei Huang}%
\author[4,4]{Benjamin R Hillman}%
\author[5,5]{Bryce E Harrop}%
\author[4,4]{James G Foucar}%
\author[5,5]{Yilin Fang}%
\author[2,2]{Darin Comeau}%
\author[1,1]{Peter Martin Caldwell}%
\author[1,1]{Tony Bartoletti}%
\author[5,5]{Karthik Balaguru}%
\author[4,4]{Mark A Taylor}%
\author[1,1]{Renata McCoy}%
\author[5,5]{L. Ruby Leung}%
\author[1,1]{David Craig Bader}%
\author[17]{Meng Zhang}%
\affil[1]{Lawrence Livermore National Laboratory (DOE)}%
\affil[2]{Los Alamos National Laboratory (DOE)}%
\affil[3]{Brookhaven National Laboratory (DOE)}%
\affil[4]{Sandia National Laboratories (DOE)}%
\affil[5]{Pacific Northwest National Laboratory (DOE)}%
\affil[6]{University of California, Irvine}%
\affil[7]{National Center for Atmospheric Research (UCAR)}%
\affil[8]{Argonne National Laboratory (DOE)}%
\affil[9]{University of Wisconsin-Milwaukee}%
\affil[10]{Lawrence Berkeley National Laboratory (DOE)}%
\affil[11]{Joint Center for Satellite Data Assimilation}%
\affil[12]{The University of Arizona}%
\affil[13]{Oak Ridge National Laboratory (DOE)}%
\affil[14]{The Hong Kong University of Science and Technology (Guangzhou)}%
\affil[15]{NOAA NCEP/CPC}%
\affil[16]{University of Michigan-Ann Arbor}%
\affil[17]{Lawrence Livermore National Laboratory, Livermore, CA, USA}%


\vspace{-1em}



  
  \date{May 24, 2024}


\begingroup
\let\center\flushleft
\let\endcenter\endflushleft
\maketitle
\endgroup





\selectlanguage{english}
\begin{abstract}
This work documents version two of the Department of Energy's Energy
Exascale Earth System Model (E3SM). E3SM version 2 (E3SMv2) is a
significant evolution from its predecessor E3SMv1, resulting in a model
that is nearly twice as fast and with a simulated climate that is
improved in many metrics. We describe the physical climate model in its
lower horizontal resolution configuration consisting of 110 km
atmosphere, 165 km land, 0.5\selectlanguage{ngerman}° river routing model, and an ocean and sea
ice with mesh spacing varying between 60 km in the mid-latitudes and 30
km at the equator and poles. The model performance is evaluated by means
of a standard set of Coupled Model Intercomparison Project Phase 6
(CMIP6) Diagnosis, Evaluation, and Characterization of Klima (DECK)
simulations augmented with historical simulations as well as simulations
to evaluate impacts of different forcing agents. The simulated climate
is generally realistic, with notable improvements in clouds and
precipitation compared to E3SMv1. E3SMv1 suffered from an excessively
high equilibrium climate sensitivity (ECS) of 5.3 K. In E3SMv2, ECS is
reduced to 4.0 K which is now within the plausible range based on a
recent World Climate Research Programme (WCRP) assessment. However,
E3SMv2 significantly underestimates the global mean surface temperature
in the second half of the historical record. An analysis of
single-forcing simulations indicates that correcting the historical
temperature bias would require a substantial reduction in the magnitude
of the aerosol-related forcing.%
\end{abstract}\selectlanguage{ngerman}%



\sloppy




\selectlanguage{english}
\FloatBarrier
\end{document}

