Blar i forfatter "Bacmeister, Julio T."

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    • CO2 Increase Experiments Using the CESM: Relationship to Climate Sensitivity and Comparison of CESM1 to CESM2 

      Bacmeister, Julio T.; Hannay, Cecile; Medeiros, Brian; Gettelmann, Andrew; Neale, Richard; Fredriksen, Hege-Beate; Lipscomb, William H.; Simpson, Isla; Bailey, David Anthony; Holland, Marika M.; Lindsay, Keith; Otto-Bliesner, Bette L. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-14)
      We examine the response of the Community Earth System Model Versions 1 and 2 (CESM1 and CESM2) to abrupt quadrupling of atmospheric CO2 concentrations (4xCO2) and to 1% annually increasing CO2 concentrations (1%CO2). Different estimates of equilibrium climate sensitivity (ECS) for CESM1 and CESM2 are presented. All estimates show that the sensitivity of CESM2 has increased by 1.5 K or more over that ...