Collaborative Research: Deep Convective Clouds and Chemistry (DC3) Field Campaign

合作研究：深对流云和化学 (DC3) 实地活动

• 批准号: 0921480
• 负责人: William Brune
• 金额: $ 2.5万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-09-15 至 2011-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0921480&HistoricalAwards=false
• 关键词: Collaborative; Research; Deep; Convective; Clouds

Based upon a submitted Scientific Program Overview (SPO) document for the Deep Convective Clouds and Chemistry (DC3) field campaign, this preliminary effort will focus on support of required coordination of potential DC3 investigators planning this large experiment.If supported, DC3 will investigate the impact of deep, mid-latitude continental convective clouds, including their dynamical, physical, and lightning processes, on upper tropospheric (UT) composition and chemistry. DC3 will be requesting access to extensively instrumented aircraft platforms and ground-based observation systems. The NSF/NCAR Gulfstream-V (GV) aircraft would be the primary platform to study the high altitude outflow of the storms, and would be instrumented to measure a variety of gas-phase species, radiation, and cloud/precipitation particle characteristics. The GV would also document the downwind chemical evolution of the convective plume. The NSF/NCAR C-130 (or possibly the NASA DC-8) aircraft would complement the GV via in situ observations to characterize the convective storm inflow and provide remote sensing to aid in GV flight plan optimization and column characterization. Ground-based radar networks would depict the volumetric precipitation and kinematic characteristics of storms and provide guidance to the aircraft operations. The impact of lightning on outflow composition would be constrained through detailed measurements from VHF lightning mapping arrays. DC3 would thus surpass earlier experiments that addressed these topics by using advanced instrumentation not previously available. Satellite data would place the airborne and ground-based measurements in the context of the wider geographical region and help guide sampling strategies. At the same time, DC3 measurements would serve to augment satellite retrievals of atmospheric constituents such as nitrogen dioxide near storms. Broader impacts of the planned field program would include extensive education and outreach activities and via improved understanding of sources of UT ozone, which is important to climate forcing and air quality, for assessment reports and resulting policy implications. Further, DC3 measurements would be instrumental in improving model parameterizations of convective transport, production of nitric oxide by lightning, and wet deposition of chemical species. Undergraduate and graduate students would participate in DC3 in a variety of ways including airborne and ground-based observations, design and construction of instruments, operation and improvement of numerical models, precipitation collection and analysis, and reporting of the results to the scientific community through presentations and publications. Outreach and media days during the field campaign would provide a valuable means to engage the public in atmospheric science.

根据提交的深对流云和化学（DC 3）现场活动的科学计划概述（SPO）文件，这项初步工作将集中在支持计划这项大型实验的潜在DC 3研究人员所需的协调。如果得到支持，DC 3将调查深中纬度大陆对流云的影响，包括其动力学，物理和闪电过程，上对流层（UT）的成分和化学。DC 3将要求获得广泛的仪器化飞机平台和地面观测系统。NSF/NCAR湾流-V（GV）飞机将是研究风暴高空外流的主要平台，并将安装仪器测量各种气相物质、辐射和云/降水粒子特性。GV还将记录对流羽流的顺风化学演变。NSF/NCAR C-130（也可能是NASA DC-8）飞机将通过现场观测对GV进行补充，以描述对流风暴流入的特征，并提供遥感以帮助GV飞行计划优化和柱特征。地面雷达网络将描绘风暴的体积降水量和运动学特征，并为飞机行动提供指导。闪电对外流成分的影响将通过甚高频闪电测绘阵列的详细测量加以限制。因此，DC 3将超越早期的实验，通过使用以前没有的先进仪器来解决这些问题。卫星数据将把空中和地面测量置于更广泛的地理区域范围内，并有助于指导取样战略。与此同时，DC 3的测量将有助于加强卫星对大气成分的检索，如风暴附近的二氧化氮。计划中的实地方案的更广泛影响将包括广泛的教育和宣传活动，并通过提高对UT臭氧来源的理解，这对气候强迫和空气质量非常重要，用于评估报告和由此产生的政策影响。此外，DC 3测量将有助于改善对流传输，闪电产生一氧化氮和化学物质的湿沉积的模型参数化。本科生和研究生将以各种方式参加DC 3，包括空中和地面观测、仪器的设计和建造、数值模型的操作和改进、降水收集和分析以及通过演示和出版物向科学界报告结果。实地活动期间的外联日和媒体日将为公众参与大气科学提供宝贵的手段。