Energy Exascale Earth System Model v2.0 ...

• Main Author: E3SM Project, DOE
• Format: Article in Journal/Newspaper
• Language: English
• Published: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States) 2021
• Subjects: Sea ice
• Online Access: https://dx.doi.org/10.11578/e3sm/dc.20210927.1; https://www.osti.gov/doecode/biblio/64702

First release of version 2 of the Energy Exascale Earth System Model. The atmosphere component remains EAM. Major changes since version 1 include: all column-physics parameterizations are computed on a separate grid that has approximately half the number of points of the dynamics grid, a new nonhydrostatic dynamical core (running in hydrostatic mode) with semi-Lagrangian tracer transport, CLUBB updated from v1 to v2, a new convective trigger (dCAPE/ULL) based on the dynamic Convective Available Potential Energy (CAPE) (dCAPE) and the Unrestricted Launch Level (ULL) concepts is used in ZM. minimum cloud droplet number changed, gravity wave drag energy conservation fixed and new tunings used, dust emission size distribution changed to emit more coarse dust particles The land component is still ELM. Major changes since version 1 include: using SNICAR-AD for radiation in snow to match the sea-ice model and fixing bugs in snow compaction and water state calculation. The ocean component remains MPAS-ocean. Major ...