EUREC4A-UK: Elucidating the role of cloud-circulation coupling in climate

EUREC4A-UK：阐明云-环流耦合在气候中的作用

• 批准号: NE/S015752/1
• 负责人: Thomas Choularton
• 金额: $ 101.66万
• 依托单位: University of Manchester
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2020
• 资助国家: 英国
• 起止时间: 2020 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FS015752%2F1
• 关键词: EUREC4A; UK; Elucidating; role; cloud

EUREC4A-UK is a programme of observational and modelling research which aimsto study the detailed aerosol and cloud processes in the life cycle of shallow tradecumulus clouds and the two-way interactions between the cloud processes and thelarge-scale dynamics. The different responses of these clouds to warming in globalclimate models (GCM) explain most of the inter-model differences, yet the physicsof these responses remains poorly constrained. The programme is focussed onthe participation of UK scientists and the BAS Twin Otter aircraft in EUREC4A(Elucidating the Role of Clouds-Circulation Coupling in Climate). EUREC4A isa coordinated international campaign that aims to address the current lack of understanding ofthe processes controlling the response of trade-wind cumulus clouds to changing environmentalconditions in a warmer climate. The goal of EUREC4A is to examine the interplay between theclouds, atmospheric circulations and climate sensitivity. EUREC4A-UK will make a unique and self-contained contribution to the international programme by: (i) providing observational facilities whichare needed as part of the coordinated field campaign; (ii) conducting and leading the analysis ofthe aerosols, cloud microphysics and boundary-layer processes in the life cycle of shallow tradecumulus clouds; (iii) placing the analysis in the context of the EUREC4A problems by modelling thetwo-way interactions between the cloud processes and the large-scale dynamics; and (iv) applyingthe results by testing the new convection scheme in the UM and using the improved model to determinethe dominant processes controlling the cloud fields. International partners will complement the re-search with a focus on observing and modelling the macrophysical properties and the environmentof trade-cumulus clouds in order to determine: (i) what controls the convective mass flux, mesoscaleorganization and depth of shallow-cumulus clouds; (ii) how the trade-cumulus cloud fraction varieswith turbulence, convective mixing and large-scale circulations; and (iii) the impact this variation hason atmospheric radiation.

EUREC4A-UK是一个观测和模拟研究项目，旨在研究浅tradeculus云生命周期中的详细气溶胶和云过程以及云过程与大尺度动力学之间的双向相互作用。在全球气候模式（GCM）中，这些云对变暖的不同反应解释了模式间的大部分差异，但这些反应的物理性质仍然缺乏约束。该计划的重点是英国科学家和BAS双水獭飞机参与EUREC4A（阐明云-环流耦合在气候中的作用）。EUREC4A是一项协调的国际运动，旨在解决目前对控制信风积云对变暖气候中不断变化的环境条件的响应过程缺乏了解的问题。EUREC4A的目标是研究云、大气环流和气候敏感性之间的相互作用。EUREC4A-UK将通过以下方式对国际方案作出独特和独立的贡献：(i)提供作为协调的实地运动一部分所需的观测设施；（ii）进行和领导浅tradeculus云生命周期内气溶胶、云微物理和边界层过程的分析；（iii）通过模拟云过程和大规模动力学之间的双向相互作用，将分析置于EUREC4A问题的背景下；（iv）通过在UM中测试新对流方案并使用改进的模型来应用结果，以确定控制云场的主导过程。国际合作伙伴将对研究进行补充，重点观察和模拟贸易积云的宏观物理特性和环境，以便确定：(i)控制对流质量通量、中尺度组织和浅积云深度的因素；（ii）贸易积云分数随湍流、对流混合和大尺度环流的变化；（iii）这种变化对大气辐射的影响。

项目成果

Cloud Microphysics Measurements and the Development of Precipitation During EUREC4A

EUREC4A 期间的云微物理测量和降水发展

• DOI: 10.5194/egusphere-egu22-12948
• 发表时间: 2022
• 作者: Lloyd G