{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/21016"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/21016","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Climate sensitivity study with energy balance models","abstract":"In this thesis, the sensitivity of the Earth's climate is studied by modeling past climatic variations with two-dimensional seasonal energy balance model. This thesis consists of two parts. The first part is a study of the interaction between the seasonal cycle and the small ice cap instability, which is a possible mechanism for the initiation of glaciation in the northern hemisphere and southern hemisphere. Results from a two-dimensional energy balance model with a realistic land-ocean distribution show that the small ice cap instability exists in the southern hemisphere, but not in the northern hemisphere. A series of experiments with a one-dimensional energy balance model with idealized geography is used to study the roles of the seasonal cycle and the land-ocean distribution. The results indicate that the seasonal cycle and land-ocean distribution can influence the strength of the albedo feedback, which is responsible for the small ice cap instability, through two factors: the temperature gradient and the amplitude of the seasonal cycle.","abstract_html":"In this thesis, the sensitivity of the Earth's climate is studied by modeling past climatic variations with two-dimensional seasonal energy balance model. This thesis consists of two parts. The first part is a study of the interaction between the seasonal cycle and the small ice cap instability, which is a possible mechanism for the initiation of glaciation in the northern hemisphere and southern hemisphere. Results from a two-dimensional energy balance model with a realistic land-ocean distribution show that the small ice cap instability exists in the southern hemisphere, but not in the northern hemisphere. A series of experiments with a one-dimensional energy balance model with idealized geography is used to study the roles of the seasonal cycle and the land-ocean distribution. The results indicate that the seasonal cycle and land-ocean distribution can influence the strength of the albedo feedback, which is responsible for the small ice cap instability, through two factors: the temperature gradient and the amplitude of the seasonal cycle.","abstract_has_math":false,"creators":["Huang, Jin"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Atmospheric Science","degree_department":null,"school":null,"contributors":["Bowman, Kenneth P."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-05-07T12:55:52Z","date_published":"2011-05-07T12:55:52Z","updated_at":"2026-07-22T22:25:17Z","subjects":["Physical Oceanography","Paleoecology","Physics, Atmospheric Science"],"languages":["eng"],"rights":["Copyright 1991 Huang, Jin"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9210843","(UMI)AAI9210843"],"render_values":[{"text":"AAI9210843","href":null,"code":true},{"text":"(UMI)AAI9210843","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/21016","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Bowman, Kenneth P."]},{"key":"dc:creator","label":"Author","values":["Huang, Jin"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2011-05-07T12:55:52Z","10000-01-01","1991"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Atmospheric Science"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Physical Oceanography","Paleoecology","Physics, Atmospheric Science"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 1991 Huang, Jin"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9210843","(UMI)AAI9210843","http://hdl.handle.net/2142/21016"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["In this thesis, the sensitivity of the Earth's climate is studied by modeling past climatic variations with two-dimensional seasonal energy balance model. This thesis consists of two parts. The first part is a study of the interaction between the seasonal cycle and the small ice cap instability, which is a possible mechanism for the initiation of glaciation in the northern hemisphere and southern hemisphere. Results from a two-dimensional energy balance model with a realistic land-ocean distribution show that the small ice cap instability exists in the southern hemisphere, but not in the northern hemisphere. A series of experiments with a one-dimensional energy balance model with idealized geography is used to study the roles of the seasonal cycle and the land-ocean distribution. The results indicate that the seasonal cycle and land-ocean distribution can influence the strength of the albedo feedback, which is responsible for the small ice cap instability, through two factors: the temperature gradient and the amplitude of the seasonal cycle.","The second part of this thesis is a study of the CO$\\sb2$-climate feedback and its possible role in the 41 kyr sea surface temperature oscillation during the Matuyama chron (2.4 to 0.7 Myr BP). The CO$\\sb2$-climate feedback is parameterized as an internal longwave radiation-polar temperature feedback in the energy balance model. Other physical processes are treated as boundary conditions. It is found that the CO$\\sb2$-climate feedback can increase climate sensitivity to orbital parameters, especially to the obliquity changes, which have a 41 kyr cycle. The model results indicate that the CO$\\sb2$-climate feedback is one of possible mechanisms for the dominant 41 kyr climate change during the Matuyama. (Abstract shortened with permission of author.)","Made available in DSpace on 2011-05-07T12:55:52Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9210843.pdf: 4684861 bytes, checksum: 82e9af1e63c79ac052e09e5b7070d6b8 (MD5) Previous issue date: 1991","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:47:54Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:21:40-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","ETDs are only available to UIUC Users without author permission","U of I Only"]},{"key":"dc:title","label":"Title","values":["Climate sensitivity study with energy balance models"]}]}],"canonical_facts":{"dc:contributor":["Bowman, Kenneth P."],"dc:creator":["Huang, Jin"],"dc:date":["2011-05-07T12:55:52Z","10000-01-01","1991"],"dc:description":["In this thesis, the sensitivity of the Earth's climate is studied by modeling past climatic variations with two-dimensional seasonal energy balance model. This thesis consists of two parts. The first part is a study of the interaction between the seasonal cycle and the small ice cap instability, which is a possible mechanism for the initiation of glaciation in the northern hemisphere and southern hemisphere. Results from a two-dimensional energy balance model with a realistic land-ocean distribution show that the small ice cap instability exists in the southern hemisphere, but not in the northern hemisphere. A series of experiments with a one-dimensional energy balance model with idealized geography is used to study the roles of the seasonal cycle and the land-ocean distribution. The results indicate that the seasonal cycle and land-ocean distribution can influence the strength of the albedo feedback, which is responsible for the small ice cap instability, through two factors: the temperature gradient and the amplitude of the seasonal cycle.","The second part of this thesis is a study of the CO$\\sb2$-climate feedback and its possible role in the 41 kyr sea surface temperature oscillation during the Matuyama chron (2.4 to 0.7 Myr BP). The CO$\\sb2$-climate feedback is parameterized as an internal longwave radiation-polar temperature feedback in the energy balance model. Other physical processes are treated as boundary conditions. It is found that the CO$\\sb2$-climate feedback can increase climate sensitivity to orbital parameters, especially to the obliquity changes, which have a 41 kyr cycle. The model results indicate that the CO$\\sb2$-climate feedback is one of possible mechanisms for the dominant 41 kyr climate change during the Matuyama. (Abstract shortened with permission of author.)","Made available in DSpace on 2011-05-07T12:55:52Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9210843.pdf: 4684861 bytes, checksum: 82e9af1e63c79ac052e09e5b7070d6b8 (MD5) Previous issue date: 1991","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:47:54Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:21:40-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","ETDs are only available to UIUC Users without author permission","U of I Only"],"dc:identifier":["AAI9210843","(UMI)AAI9210843","http://hdl.handle.net/2142/21016"],"dc:language":["eng"],"dc:rights":["Copyright 1991 Huang, Jin"],"dc:subject":["Physical Oceanography","Paleoecology","Physics, Atmospheric Science"],"dc:title":["Climate sensitivity study with energy balance models"],"dc:type":["text"],"thesis:degree_discipline":["Atmospheric Science"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:25:17Z"}