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UID:submissions.pasc-conference.org_PASC23_sess135@linklings.com
SUMMARY:MS1C - Robust, Accurate, and Scalable Algorithms for Coupling in E
 arth System Models
DESCRIPTION:Minisymposium\n\nCoupled Earth System Model (ESM) simulations 
 involve computationally complex models of the atmosphere, ocean, land surf
 ace, river runoff, sea ice, and other components which must act as a singl
 e coupled system, increasing the complexity exponentially and requiring ex
 treme-scale computational power. Rigorous spatial coupling between compone
 nts in ESMs involves field transformations, and communication of data acro
 ss multiresolution grids while preserving key attributes of interest such 
 as global integrals and local features. Additionally, accurate treatment o
 f coupled nonlinearities between components, with appropriate selection of
  time step size for exchanging field data can determine the overall perfor
 mance of the solvers. Understanding and controlling the dominant sources o
 f errors in coupled climate systems, in addition to finding the right bala
 nce between both the numerics and computational performance remains key to
  creating reliable and high-performing coupled physics infrastructures for
  climate models. This balance is critically important as very high-resolut
 ion "Storm resolving" Earth System Models are beginning to appear, and are
  running on thousands of heterogeneous nodes. In this interactive mini-sym
 posium, we bring together computational and climate scientists to present 
 ongoing developments on accurate and scalable earth system couplers for cl
 imate simulations, with focused discussions on performance hurdles in pre-
 exascale and exascale systems.\n\nOcean-Atmosphere Coupling in Earth Syste
 m Models: Formulation and Algorithms\n\nIn this talk, we address the ocean
 -atmosphere coupling problem from the point of view of domain decompositio
 n methods. We show that present coupling methods used in realistic ocean-a
 tmosphere coupled models can be written in the formalism of Schwarz iterat
 ive algorithms, and correspond to methods th...\n\n\nFlorian Lemarié (INRI
 A, Université Grenoble Alpes); Eric Blayo (Université Grenoble Alpes); Val
 entina Schüller (Technical University of Munich, Université Grenoble Alpes
 ); and Olivier Marti (Laboratoire des Sciences du Climat et de l’Environne
 ment)\n---------------------\nCurrent State-Of-The-Art Coupling Algorithms
 , Hurdles, and Approaches for Next-Generation Earth System Models\n\nThis 
 part of the session will include a panel discussion on developments and re
 search directions in coupled earth system models. More specifically, we wi
 ll invite climate and computational scientists to explore ideas about addr
 essing current hurdles in improving the spatiotemporal consistency, accur.
 ..\n\n\nVijay Mahadevan (Argonne National Laboratory), Florian Lemarié (IN
 RIA), Robert Jacob (Argonne National Laboratory), and Mariana Vertenstein 
 (Norwegian Meteorological Institute)\n---------------------\nInfrastructur
 e for  Next Generation Earth System Modeling Using ESMF/NUOPC\n\nThe Commu
 nity Mediator for Earth Prediction Systems (CMEPS) is an extensible ESMF/N
 UOPC-compliant coupler component capable of coupling atmosphere, ocean, se
 a ice, land, wave, river and glacier models. CMEPS provides the coupling i
 nfrastructure for the Community Earth System Model (CESM), the NOAA U...\n
 \n\nMariana Vertenstein (Norwegian Meteorological Institute)\n------------
 ---------\nC-Coupler3: An Integrated Coupler Infrastructure for Earth Syst
 em Modeling\n\nThe Community Coupler (C-Coupler) for Earth system modeling
  is a coupler family that has been developed in China since 2010. C-Couple
 r3, the latest version, is fully compatible with the previous version, C-C
 oupler2, and is an integrated infrastructure with new features. i.e., a se
 ries of parallel op...\n\n\nLi Liu, Chao Sun, Xinzhu Yu, and Hao Yu (Tsing
 hua University)\n\nDomain: Climate, Weather and Earth Sciences\n\nSession 
 Chair: Vijay Mahadevan (Argonne National Laboratory, TechTrans Internation
 al Inc)
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