Testing a new explanation of cloud feedback on global climate

测试云反馈对全球气候的新解释

• 批准号: DP140101104
• 负责人: Prof Steven Sherwood
• 金额: $ 25.16万
• 依托单位: The University of New South Wales
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2014
• 资助国家: 澳大利亚
• 起止时间: 2014-01-01 至 2017-06-30
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP140101104
• 关键词: Testing; new; explanation; cloud; feedback

A new analysis suggests that the sensitivity of global climate to greenhouse gases is largely controlled by the upward transport of water vapour in the lower troposphere, but the analysis did not examine clouds, which must be involved for the mechanism to be valid. The aim of the proposed project is to determine whether variations in cloud implied by this new explanation are supported by observations and process models. If the explanation is confirmed, then for the first time in over 30 years of intense research it will be possible to determine the long-term severity of global warming by examining the present-day atmosphere. The expected outcome of this research is to clarify how and why low clouds change in altered climates.

一项新的分析表明，全球气候对温室气体的敏感性在很大程度上受到对流层低层水蒸气向上输送的控制，但该分析没有研究云，而云必须参与该机制才能有效。拟议项目的目的是确定这种新解释所暗示的云的变化是否得到观测和过程模型的支持。如果这一解释得到证实，那么在30多年的密集研究中，第一次有可能通过检查现在的大气层来确定全球变暖的长期严重程度。这项研究的预期结果是澄清低云在气候变化中如何以及为什么会变化。