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B03. ECS > 5 K; a tale of two models

B03. ECS > 5 K; a tale of two models

Nov 20, 2019

 

Poster Title

ECS > 5 K; a tale of two models

First Author

@Chris Golaz

Topic

E3SM evaluation

Affiliation

E3SM Water Cycle

Link to document

 

Title

ECS > 5 K; a tale of two models

Authors

Chris Golaz, LLNL

Abstract

E3SMv1 and CESM2 are close cousins. Perhaps not surprisingly, both models share a high climate sensitivity (ECS > 5 K). Despite this similarity, these two models behave differently in idealized CO2 forcing simulations (abrupt-4xCO2, 1pctCO2) as well as historical simulations. In particular, we explore possible reasons why one model (CESM2) simulates the evolution of the global mean surface temperature over the historical record significantly more accurately than the other (E3SMv1).