Aircraft measurements of ice-nucleating particles and their importance for mixed-phase clouds

飞机对冰核颗粒的测量及其对混合相云的重要性

• 批准号: 2743363
• 金额: --
• 依托单位: University of Leeds
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2743363
• 关键词: Aircraft; measurements; ice; nucleating; particles

This project aums to understand the sources and activity of particles which trigger ice formation in clouds. Ice formation in clouds is a major uncertainty in climate projections and short term weather forecasts, hence with major societal and commercial implications. The overarching objective is to improve the understanding of the sources, processing and activity of ice nucleating particles relevant for mixed-phase clouds. The scientific objectives will involve:1. Work with the Met Office to characterise and validate their new Ice Nucleus Counter (INC) against other INP devices, both in Leeds and at our partner's AIDA facility in Karlsruhe Institute of Technology. 2. Work in Leeds to develop the complementary filter based INP analysis and increase its sensitivity in order to quantify INP at temperatures relevant for the initiation of secondary ice production and distinguish between biological and mineral ice nucleating materials.3. Measure and characterise the occurrence of INP in the WesCon field campaign which has a focus on convective clouds in southern England. This will involve taking part in research flights on the FAAM BAe-146 aircraft in summer 2023.4. Measure and characterise INP relevant for cold-air outbreaks as part of our ongoing programme of research in this area. 5. Work with the modellers in WesCon to define primary ice production using the results from the campaign.

该项目旨在了解引发云中冰形成的粒子的来源和活动。云中结冰是气候预测和短期天气预报的主要不确定性，因此具有重大的社会和商业影响。总体目标是提高对与混合相云相关的冰成核颗粒的来源、处理和活动的理解。科学目标将包括：1．与英国气象局合作，针对位于利兹和我们合作伙伴位于卡尔斯鲁厄理工学院的 AIDA 设施的其他 INP 设备来表征和验证他们的新型冰核计数器 (INC)。 2. 在利兹开展工作，开发基于 INP 分析的补充过滤器，并提高其灵敏度，以便在与二次冰生成启动相关的温度下量化 INP，并区分生物和矿物冰成核材料。3．在 WesCon 现场活动中测量和表征 INP 的发生，该活动重点关注英格兰南部的对流云。这将涉及 2023.4 夏季参加 FAAM BAe-146 飞机的研究飞行。作为我们在该领域正在进行的研究计划的一部分，测量和表征与冷空气爆发相关的 INP。 5. 与 WesCon 的建模者合作，利用活动结果定义初级制冰量。