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Paleo-feedbacks in the hydrological and energy cycles in the Community Climate System Model 3

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dc.contributor.authorBurt, Melissa A., author
dc.contributor.authorRandall, David A., advisor
dc.contributor.authorDenning, Scott, committee member
dc.contributor.authorWohl, Ellen E., 1962-, committee member
dc.contributor.authorOtto-Bliesner, Bette, committee member
dc.date.accessioned2007-01-03T08:26:59Z
dc.date.available2007-01-03T08:26:59Z
dc.date.issued2008
dc.descriptionDepartment Head: Dick Johnson.
dc.description.abstractThis research focuses on the joint variability of the hydrological and energy cycles for the atmosphere and lower boundary and climate feedbacks associated with these changes at the Last Glacial Maximum. The LGM simulated climate experiences a global cooling of 4.9 K compared to the PI climate, with greatest cooling in the high latitudes of both hemispheres. Additional cooling also exists over the continental ice sheets in North America, Northern Europe, and Antarctica. Precipitation and evaporation are reduced by 10%, and precipitable water by 20%, compared to conditions at PI. Overall, from LGM to PI the changes in clouds are weak. The water vapor, ice-albedo, and cloud feedbacks act to amplify the climate change from LGM to PI. The positive water vapor and ice-albedo feedbacks account for 5.04 W m-2 K-1 and 2.38 W m-2 K-1, respectively of the climate change. The cloud feedbacks produces -2.83 of the change. An interesting and unexpected result was that the sign of the ice-albedo feedback changed regionally and is driven by changes in ocean basin size. Combined, the radiative feedbacks from LGM to PI act to amplify the climate change by 5.67 W m-2 K-1 and are balanced by an increase in surface evaporation.
dc.format.mediummasters theses
dc.identifier2008_summer_Melissa.pdf
dc.identifierETDF2008100002ATMS
dc.identifier.urihttp://hdl.handle.net/10217/5200
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado State University. Libraries
dc.relationCatalog record number (MMS ID): 991009438989703361
dc.relationQC884.B877 2008
dc.relation.ispartof2000-2019
dc.rightsCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.
dc.titlePaleo-feedbacks in the hydrological and energy cycles in the Community Climate System Model 3
dc.typeText
dcterms.rights.dplaThis Item is protected by copyright and/or related rights (https://rightsstatements.org/vocab/InC/1.0/). You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
thesis.degree.disciplineAtmospheric Science
thesis.degree.grantorColorado State University
thesis.degree.levelMasters
thesis.degree.nameMaster of Science (M.S.)

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