Paleo-feedbacks in the hydrological and energy cycles in the Community Climate System Model 3
Department Head: Dick Johnson. 2008 Summer. Includes bibliographical references (pages 68-73). This 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. T...
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ftmountainschol:oai:mountainscholar.org:10217/5200 2023-07-02T03:29:41+02:00 Paleo-feedbacks in the hydrological and energy cycles in the Community Climate System Model 3 Burt, Melissa A., author Randall, David A., advisor Denning, Scott, committee member Wohl, Ellen E. 1962-, committee member Otto-Bliesner, Bette, committee member 2007-01-03T08:26:59Z masters theses application/pdf http://hdl.handle.net/10217/5200 English eng eng Colorado State University. Libraries Catalog record number (MMS ID): 991009438989703361 QC884.B877 2008 2000-2019 2008_summer_Melissa.pdf ETDF2008100002ATMS http://hdl.handle.net/10217/5200 Copyright 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. Text 2007 ftmountainschol 2023-06-10T17:47:53Z Department Head: Dick Johnson. 2008 Summer. Includes bibliographical references (pages 68-73). This 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. Text Antarc* Antarctica Mountain Scholar (Digital Collections of Colorado and Wyoming) |
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Department Head: Dick Johnson. 2008 Summer. Includes bibliographical references (pages 68-73). This 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. |
format |
Text |
author |
Burt, Melissa A., author Randall, David A., advisor Denning, Scott, committee member Wohl, Ellen E. 1962-, committee member Otto-Bliesner, Bette, committee member |
spellingShingle |
Burt, Melissa A., author Randall, David A., advisor Denning, Scott, committee member Wohl, Ellen E. 1962-, committee member Otto-Bliesner, Bette, committee member Paleo-feedbacks in the hydrological and energy cycles in the Community Climate System Model 3 |
author_facet |
Burt, Melissa A., author Randall, David A., advisor Denning, Scott, committee member Wohl, Ellen E. 1962-, committee member Otto-Bliesner, Bette, committee member |
author_sort |
Burt, Melissa A., author |
title |
Paleo-feedbacks in the hydrological and energy cycles in the Community Climate System Model 3 |
title_short |
Paleo-feedbacks in the hydrological and energy cycles in the Community Climate System Model 3 |
title_full |
Paleo-feedbacks in the hydrological and energy cycles in the Community Climate System Model 3 |
title_fullStr |
Paleo-feedbacks in the hydrological and energy cycles in the Community Climate System Model 3 |
title_full_unstemmed |
Paleo-feedbacks in the hydrological and energy cycles in the Community Climate System Model 3 |
title_sort |
paleo-feedbacks in the hydrological and energy cycles in the community climate system model 3 |
publisher |
Colorado State University. Libraries |
publishDate |
2007 |
url |
http://hdl.handle.net/10217/5200 |
genre |
Antarc* Antarctica |
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Antarc* Antarctica |
op_relation |
Catalog record number (MMS ID): 991009438989703361 QC884.B877 2008 2000-2019 2008_summer_Melissa.pdf ETDF2008100002ATMS http://hdl.handle.net/10217/5200 |
op_rights |
Copyright 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. |
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