Collaborative Research: TI3GER--Technological Innovation Into Iodine and Gv-aircraft Environmental Research

此次现场活动包括测试飞行，以验证以前未在NSF/NCAR湾流V研究飞机上飞行的仪器。它还包括为解决若干科学假设而进行的飞行，包括调查该地区因碘造成的对流层上层和平流层下层臭氧损失。来自UTLS飞行的这组新颖仪器的研究结果有望显著提高对该地区化学的科学理解。该项目将在GV研究飞机上测试先进的仪器和新设计的适用于测量可冷凝蒸汽和环境离子的层流入口，以实现以下目标：(1)通过尝试首次同时测量气体和颗粒碘，开发了飞机有效载荷，以实验限制平流层中总碘的90%；(2)碘酸（HIO3）是一种广泛存在的可冷凝蒸汽，可以生长纳米颗粒并驱动碘的气粒分配变化，将首次在UTLS上通过飞机进行测量；(3)同时测量环境离子（数量和化学成分）将识别UTLS中参与离子诱导成核的可冷凝蒸汽。最初的测试飞行将在科罗拉多州进行，之后计划在科纳夏威夷进行有限数量的（~3-6）探索性科学飞行，以演示飞机有效载荷的科学准备情况，评估仪器性能，并为莫纳罗亚天文台（MLO）的长期测量提供信息，为未来的活动做准备。在MLO上空进行的飞机测量，以及MLO上的MAX-DOAS仪器对氧化碘（IO）自由基的测量，将能够表征MLO上空IO垂直剖面的性质和形状。该项目包括与来自三个美国国家实验室、一个外国大学和五个外国国家实验室的科学家合作。四名研究生和三名博士后将与来自美国、德国、比利时、俄罗斯和西班牙的11个不同机构的科学家进行互动，并获得精密仪器、计算流体动力学模拟、数据解释、预测和全球建模方面的经验。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

This field campaign includes test flights to certify instrumentation not previously flown on the NSF/NCAR Gulfstream V research aircraft. It also includes flights to address several scientific hypotheses, including the investigation of ozone loss in the upper troposphere and lower stratosphere (UTLS) due to iodine in the region. The research results from this novel collection of instrumentation flown in the UTLS is expected to significantly improve the scientific understanding of chemistry in the region.This project will test advanced instrumentation and a newly designed laminar flow inlet suitable for measuring condensable vapors and ambient ions on the GV research aircraft to achieve the following objectives: (1) The aircraft payload has been developed to experimentally constrain 90% of total iodine in the stratosphere by attempting the first simultaneous aircraft measurements of gas- and particle iodine; (2) Iodic acid (HIO3), a widespread condensable vapor that grows nanoparticles and drives changes in gas-particle partitioning of iodine, will be measured for the first time in the UTLS by aircraft; (3) Simultaneous measurements of ambient ions (number & chemical composition) will identify those condensable vapors that participate in ion-induced nucleation in the UTLS. Initial test flights will be conducted in Colorado, after which a limited number of (~3-6) exploratory science flights are planned from Kona Hawaii to demonstrate the science readiness of the aircraft payload, evaluate instrument performance, and to inform long-term measurements at Mauna Loa Observatory (MLO) in preparation for future campaigns. Aircraft measurements made above MLO, along with iodine oxide (IO) radical measurements from a MAX-DOAS instrument at MLO, will enable the characterization of the nature and shape of the vertical profile of IO above MLO. This project includes collaboration with scientists from three U.S. National Laboratories, one foreign university, and 5 foreign National Laboratories. Four graduate students and three postdocs will interact with scientists at eleven different institutions in the U.S., Germany, Belgium, Russia, and Spain, and gain experience with sophisticated instrumentation, computational fluid dynamics simulations, data interpretation, forecasting, and global modeling.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.