Environmental Science Division (EVS)a Division of Argonne National Laboratory
Predictive environmental understanding

Updated exascale system for Earth simulations

January 11, 2022

EVS scientists Robert Jacob and Yan Feng are part of a team that developed Version 2 of the Energy Exascale Earth System Model (E3SMv2). Released to the scientific community in late September, the model runs more than two times faster than its predecessor (E3SMv1).

“It's unusual for a new version of a major climate model to be faster than its predecessor,” said EVS climate scientist Robert Jacob, who leads the Infrastructure Group within E3SM. “Climate model developers usually anticipate computing advances and add features or resolution that make the model wind up with the same speed or slower. This time, advances in the algorithms resulted in a model almost twice as fast for the same simulation quality.”

The E3SM project reliably simulates aspects of Earth system variability, including regional air/water temperatures, which can strain energy grids; water availability, which affects power plant operations; extreme water-cycle events (e.g., floods and droughts), which impact infrastructure and bioenergy; and sea level rise and coastal flooding, which threaten coastal infrastructure.

Other improvements to E3SMv2 include its more accurate representation of precipitation and clouds, as well as a significantly improved representation of dust aerosols.

Read the full article.

Earth system models like E3SM take advantage of powerful new computers to simulate variations in Earth systems and anticipate changes that will critically impact the U.S. energy sector in coming years. Released to the scientific community in late September, a new version of the model runs more than two times faster than its predecessor.
Earth system models like E3SM take advantage of powerful new computers to simulate variations in Earth systems and anticipate changes that will critically impact the U.S. energy sector in coming years. Released to the scientific community in late September, a new version of the model runs more than two times faster than its predecessor. [Source: E3SM.org]
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portrait of Robert Jacob
portrait of Yan Feng