Cryosphere-atmosphere interactions in the global climate system
The climate system exhibits behavior on a wide range of time and spatial scales. Computer models that simulate climate must be faithful to these matters of scale in order to achieve meaningful results. This study involves the coupling of two models: a model that simulates the seasonal fluctuations o...
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ftriceuniv:oai:scholarship.rice.edu:1911/19316 2023-05-15T16:40:30+02:00 Cryosphere-atmosphere interactions in the global climate system Steen, Robert Samuel Ledley, Tamara Shapiro 1998 188 p. application/pdf https://hdl.handle.net/1911/19316 eng eng Steen, Robert Samuel. "Cryosphere-atmosphere interactions in the global climate system." (1998) Diss., Rice University. https://hdl.handle.net/1911/19316 . https://hdl.handle.net/1911/19316 THESIS SP. SCI. 1998 STEEN Physical geography Atmospheric sciences Thesis Text 1998 ftriceuniv 2022-08-09T20:48:38Z The climate system exhibits behavior on a wide range of time and spatial scales. Computer models that simulate climate must be faithful to these matters of scale in order to achieve meaningful results. This study involves the coupling of two models: a model that simulates the seasonal fluctuations of the atmosphere and ocean with a time constant on the order of one day and a continental ice sheet model designed to simulate the behavior of ice sheets over tens of thousands of years. These models are asynchronously coupled in both time and space because computational requirements limit the minimum grid size and time step size. Experiments are presented which examine the long time constant of the continental ice sheet and the fast approach to quasi-equilibrium of the seasonal model. Simulations of present day conditions from the coupled model are compared with climate observations and simulations of other climate models. These studies also show the sensitivity of model simulations of past climate to albedo changes, differing ice flow parameters, aerosol dust, lapse rate changes, and changes in carbon dioxide. The coupled model is then used to simulate a 120,000 year ice age cycle and mechanisms important over long time scales are discussed. Thesis Ice Sheet Rice University: Digital Scholarship Archive |
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Open Polar |
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Rice University: Digital Scholarship Archive |
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ftriceuniv |
language |
English |
topic |
Physical geography Atmospheric sciences |
spellingShingle |
Physical geography Atmospheric sciences Steen, Robert Samuel Cryosphere-atmosphere interactions in the global climate system |
topic_facet |
Physical geography Atmospheric sciences |
description |
The climate system exhibits behavior on a wide range of time and spatial scales. Computer models that simulate climate must be faithful to these matters of scale in order to achieve meaningful results. This study involves the coupling of two models: a model that simulates the seasonal fluctuations of the atmosphere and ocean with a time constant on the order of one day and a continental ice sheet model designed to simulate the behavior of ice sheets over tens of thousands of years. These models are asynchronously coupled in both time and space because computational requirements limit the minimum grid size and time step size. Experiments are presented which examine the long time constant of the continental ice sheet and the fast approach to quasi-equilibrium of the seasonal model. Simulations of present day conditions from the coupled model are compared with climate observations and simulations of other climate models. These studies also show the sensitivity of model simulations of past climate to albedo changes, differing ice flow parameters, aerosol dust, lapse rate changes, and changes in carbon dioxide. The coupled model is then used to simulate a 120,000 year ice age cycle and mechanisms important over long time scales are discussed. |
author2 |
Ledley, Tamara Shapiro |
format |
Thesis |
author |
Steen, Robert Samuel |
author_facet |
Steen, Robert Samuel |
author_sort |
Steen, Robert Samuel |
title |
Cryosphere-atmosphere interactions in the global climate system |
title_short |
Cryosphere-atmosphere interactions in the global climate system |
title_full |
Cryosphere-atmosphere interactions in the global climate system |
title_fullStr |
Cryosphere-atmosphere interactions in the global climate system |
title_full_unstemmed |
Cryosphere-atmosphere interactions in the global climate system |
title_sort |
cryosphere-atmosphere interactions in the global climate system |
publishDate |
1998 |
url |
https://hdl.handle.net/1911/19316 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_relation |
Steen, Robert Samuel. "Cryosphere-atmosphere interactions in the global climate system." (1998) Diss., Rice University. https://hdl.handle.net/1911/19316 . https://hdl.handle.net/1911/19316 THESIS SP. SCI. 1998 STEEN |
_version_ |
1766030907830960128 |