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First release of version 2.0 of the Energy Exascale Earthy System Model contains the following changes from v1.0
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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
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a new nonhydrostatic dynamical core (running in hydrostatic mode) with semi-Lagrangian tracer transport
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CLUBB
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updated from v1 to v2
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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
ELM
The land component is still ELM. Major changes since version 1 include: …
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The sea-ice component remains MPAS-seaice. Major changes since version 1 include: …A new heat- and freshwater-conserving coupling of frazil ice, turning off of SSH filtering, addition of SNICAR-AD and snow grain aging.
MPAS-Albany-landice
The land-ice component remains MPAS-Albany-landice and is a static ice sheet. Major changes since version 1 include preparation for using an active ice sheet such as:
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