Presenter: Andrew Bradley

Title:

High-order, property-preserving semi-Lagrangian tracer transport and physics-dynamics-grid remap in EAMv2

Abstract:

This talk describes two new methods that together increase the computational efficiency of the E3SM Atmosphere Model (EAM) by a factor of approximately two. EAM consists of the High-Order Methods Modeling Environment (HOMME) Spectral Element (SE) dynamical core (dycore) and the EAM physics and chemistry parameterizations. The most expensive parts of EAM are tracer transport in the dycore and parameterizations. Two related methods speed up each of these: high-order, property-preserving, remap-form, semi-Lagrangian tracer transport (SL transport) and high-order, property-preserving physics-dynamics-grid remap (Physgrid remap). SL transport replaces the dycore's Eulerian flux-form method, enabling much greater simulation time per communication round. Physgrid remap enables running parameterizations on a grid that approximately matches the effective resolution of the SE dycore. This procedure replaces running parameterizations on the denser dynamics grid. These new methods work seamlessly both in the standard EAM configuration and in the Regionally Refined Mesh (RRM) configuration.

Date

17 Sep 2020

Time

PT: 8:30 am
ET: 11:30 am

Call Info

web session: https://global.gotomeeting.com/join/570361173
call number: (571) 317-3122 Access Code: 570-361-173, If busy, use alternate number: (773) 945-1029
Joining from a video-conferencing room or system? Dial: 67.217.95.2##570361173 , Cisco devices: 570361173@67.217.95.2

Attendees

Presentation

Time	Title	Presenter	Presentation	Recording	Notes
30 min	High-order, property-preserving semi-Lagrangian tracer transport and physics-dynamics-grid remap in EAMv2	Andrew Bradley	amb-e3sm-091720.pdf	MP4 Movie (on the E3SM YouTube Channel)

Time

Title

Presenter

Presentation

Recording

Notes

30 min

High-order, property-preserving semi-Lagrangian tracer transport and physics-dynamics-grid remap in EAMv2

Andrew Bradley

amb-e3sm-091720.pdf

MP4 Movie (on the E3SM YouTube Channel)

Browser not supported