| 项目编号: | 1522829
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| 项目名称: | Exploring the Linkages among Mid-Latitude Dynamics, Clouds, and Climate Sensitivity |
| 作者: | Kevin Grise
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| 承担单位: | University of Virginia Main Campus
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| 批准年: | 2014
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| 开始日期: | 2015-08-01
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| 结束日期: | 2018-07-31
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| 资助金额: | USD298314
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Geosciences - Atmospheric and Geospace Sciences
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| 英文关键词: | mid-latitude
; future climate projection
; global climate model
; climate system
; mid-latitude cloud
; southern hemisphere mid-latitude jet
; mid-latitude ocean
; project
; model climate sensitivity
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| 英文摘要: | The goal of this research is to better understand the connection between mid-latitude clouds and dynamics in observations. The reasons for why the such linkages are well-represented in some global climate models but not in others will be studied. The implications of these processes on model climate sensitivity and future climate projections will also be examined. In the first part of the project, observed and model cloud radiative properties will be composited with respect to the centers of cyclones and anticyclones over the mid-latitude oceans of the Northern and Southern Hemispheres, to examine in the sectors of weather systems linked to model biases and uncertainties in future climate projections.
In the second part of the project, idealized model experiments will be performed using two versions of the Community Atmosphere Model with very different representations of Southern Ocean cloud radiative properties. In both model versions, quadrupled carbon dioxide experiments will be run with the radiative properties of the clouds enabled and disabled, in order to explore the role of varying cloud-radiative effects in governing the response of the Southern Hemisphere mid-latitude jet to increased greenhouse gas forcing. By better understanding cloud-radiative-dynamical connections in observations and how they are misrepresented in models, the proposed project not only can improve theoretical knowledge of the role of clouds in the climate system, but also can provide additional constraints on cloud parameterizations that will help to reduce uncertainty in future model projections. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/93838
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| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
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| Recommended Citation: | |
Kevin Grise. Exploring the Linkages among Mid-Latitude Dynamics, Clouds, and Climate Sensitivity. 2014-01-01.
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