Blar i forfatter "Holland, Marika M."

Viser treff 1-2 av 2

    • 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 ...

    • Detecting climate signals in populations across life histories 

      Jenouvrier, Stéphanie; Long, Matthew C.; Coste, Christophe; Holland, Marika M.; Gamelon, Marlène; Yoccoz, Nigel; Sæther, Bernt-Erik (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-20)
      Climate impacts are not always easily discerned in wild populations as detecting climate change signals in populations is challenged by stochastic noise associated with natural climate variability, variability in biotic and abiotic processes, and observation error in demographic rates. Detection of the impact of climate change on populations requires making a formal distinction between signals in ...