Co-ordinated Airborne Studies in the Tropics - CAST

热带地区协调机载研究 - CAST

• 批准号: NE/J006238/1
• 负责人: Andrew Vick
• 金额: $ 128.85万
• 依托单位: Science and Technology Facilities Council
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2012
• 资助国家: 英国
• 起止时间: 2012 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FJ006238%2F1
• 关键词: Co; ordinated; Airborne; Studies; Tropics

The unique research capability of the Global Hawk, with ultra-long flights possible in the upper troposphere and lower stratosphere, provides a major new opportunity to advance atmospheric science. In response to the NERC/STFC/NASA collaborative initiative, we have assembled an experienced UK team that proposes to execute a research programme covering fundamental science and technology development, which, by working with the Global Hawk, will radically enhance our future research capabilities.The Tropical Tropopause Layer (TTL) is a crucial region for chemistry/climate interactions. Building on work we have already done in this area , we will collaborate with NASA's ATTREX programme to study the TTL over the Pacific Ocean and South East Asia, with new measurements and analysis. We will address fundamental questions related to atmospheric composition, radiation and transport. The TTL controls the transport of water vapour, the crucial radiative gas, into the stratosphere; we will advance understanding of the role of sub-visible cirrus in water vapour processes. The TTL is also the main route by which very short-lived halogen species, which represent a large uncertainty in future stratospheric ozone evolution, enter the stratosphere. We will improve knowledge of the budgets of these gases and of their chemical transformation and transport through the TTL, including the role of convective transport into the TTL and the subsequent routes for transport from the TTL to the lower stratosphere. Improving representation of these processes in global chemistry/climate models is a key aim.In order to study these processes, The FAAM BAe-146 will be deployed in Guam in Jan/Feb 2014. It will fly coordinated flights with the Global Hawk which will making measurements in the same period in the TTL over the West Pacific. Detailed involvement in all phases of the collaborative missions with ATTREX will enhance the UK potential for future research using the Global Hawk, including advanced capability in mission planning and methodologies for complex, real-time data analysis. The aircraft measurements will be interpreted in conjunction with ground-based and balloon-based measurements of very short-lived halogen species and ozone, using a complementary group of regional high resolution models, global composition models and a global cirrus model.We will develop and test two new instruments and new software for the payload/mission-scientist interface, which are ideally suited for the capabilities of the Global Hawk. One new instrument will allow quantification in the TTL of the important physical properties of sub- and super-micron sized particles, allowing new information about clouds and radiation. We will develop a new short-wave IR spectrometer to measure greenhouse (CO2, CH4, and H2O) and other (CO) gases in the lower atmosphere by remote sensing, taking advantage of the very long flights in the upper troposphere and lower stratosphere. Both instruments will be flight-tested in CAST.

全球鹰独特的研究能力，可以在对流层上层和平流层下层进行超长距离飞行，为推进大气科学提供了一个重大的新机遇。为了响应 NERC/STFC/NASA 的合作倡议，我们组建了一支经验丰富的英国团队，提议执行一项涵盖基础科学和技术开发的研究计划，通过与全球鹰合作，将从根本上增强我们未来的研究能力。热带对流层顶层 (TTL) 是化学/气候相互作用的关键区域。基于我们在这一领域已经完成的工作，我们将与 NASA 的 ATTREX 计划合作，通过新的测量和分析来研究太平洋和东南亚的 TTL。我们将解决与大气成分、辐射和传输有关的基本问题。 TTL 控制着水蒸气（重要的辐射气体）向平流层的输送；我们将加深对亚可见卷云在水蒸气过程中的作用的了解。 TTL也是非常短寿命的卤素物种进入平流层的主要途径，这些卤素物种在未来平流层臭氧演化中具有很大的不确定性。我们将提高对这些气体的预算及其化学转化和通过 TTL 传输的了解，包括进入 TTL 的对流传输的作用以及随后从 TTL 传输到平流层下部的路线。改善这些过程在全球化学/气候模型中的表现是一个关键目标。为了研究这些过程，FAAM BAe-146 将于 2014 年 1 月/2 月部署在关岛。它将与全球鹰协调飞行，全球鹰将在同一时期在西太平洋上空的 TTL 中进行测量。详细参与与 ATTREX 合作任务的所有阶段将增强英国使用全球鹰进行未来研究的潜力，包括任务规划和复杂实时数据分析方法的先进能力。飞机测量结果将与极短寿命卤素物种和臭氧的地面和气球测量结合起来，使用一组互补的区域高分辨率模型、全球成分模型和全球卷云模型进行解释。我们将为有效载荷/任务科学家接口开发和测试两种新仪器和新软件，它们非常适合全球鹰的功能。一种新仪器将能够在 TTL 中量化亚微米和超微米尺寸粒子的重要物理特性，从而获得有关云和辐射的新信息。我们将开发一种新型短波红外光谱仪，利用对流层上层和平流层下层的超长距离飞行，通过遥感测量低层大气中的温室气体（CO2、CH4和H2O）和其他（CO）气体。这两种仪器都将在 CAST 中进行飞行测试。

项目成果

Surface fluxes of bromoform and dibromomethane over the tropical western Pacific inferred from airborne in situ measurements

根据机载原位测量推断热带西太平洋上空三溴甲烷和二溴甲烷的表面通量

• DOI: 10.5194/acp-18-14787-2018
• 发表时间: 2018
• 期刊: Atmospheric Chemistry and Physics
• 影响因子: 6.3
• 作者: Feng L

GreenHouse gas Observations of the Stratosphere and Troposphere (GHOST): an airborne shortwave infrared spectrometer for remote sensing of greenhouse gases

平流层和对流层温室气体观测 (GHOST)：用于遥感温室气体的机载短波红外光谱仪

• DOI: 10.5194/amt-2017-474
• 发表时间: 2018
• 作者: Humpage N

GreenHouse gas Observations of the Stratosphere and Troposphere (GHOST): an airborne shortwave-infrared spectrometer for remote sensing of greenhouse gases

平流层和对流层温室气体观测 (GHOST)：用于遥感温室气体的机载短波红外光谱仪

• DOI: 10.5194/amt-11-5199-2018
• 发表时间: 2018
• 期刊: Atmospheric Measurement Techniques
• 影响因子: 3.8
• 作者: Humpage N

Coordinated Airborne Studies in the Tropics (CAST)

热带地区协调机载研究 (CAST)

• DOI: 10.1175/bams-d-14-00290.1
• 发表时间: 2017
• 期刊: Bulletin of the American Meteorological Society
• 影响因子: 8
• 作者: Harris N