Remote sounding of air quality and greenhouse gases in the Arctic

北极空气质量和温室气体的远程探测

• 批准号: 331332-2011
• 负责人: Strong, Kimberly
• 金额: $ 1.09万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Northern Research Supplement
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=628538
• 关键词: Remote; sounding; air; quality; greenhouse

The overarching goal of my research is to provide a better understanding of the processes that determine atmospheric composition and drive atmospheric change, using a variety of instruments and data analysis tools. This proposal describes two projects that employ infrared spectroscopic techniques to make the long-term observations that are essential to address the question of "What is the composition of the Arctic atmosphere and how and why is it changing with time?" The Arctic is widely recognized as our early warning system for global change, and with its large Arctic landmass, Canada has an obligation to its own population and to the global community to do its part in monitoring the Arctic atmosphere in the years ahead. The first project involves Studies of Biomass Burning and Pollution Events using measurements made with a Fourier transform infrared (FTIR) spectrometer deployed at the Polar Environment Atmospheric Research Laboratory (PEARL) at Eureka, Nunavut in the remote high Arctic (80N, 86W). These data will be used to investigate variability and trends in tropospheric composition, and will be compared to the GEOS-Chem model to characterize the origin, evolution, and impact of biomass burning and pollution events and to improve model emission inventories. The second project involves Studies of Greenhouse Gases in the context of the Total Carbon Column Observing Network (TCCON), which the PEARL FTIR spectrometer joined in June 2010. We will implement the network's data analysis protocol, defined by the extreme precision requirements for total column CO2. We will collaborate with other TCCON sites in using the data to study the carbon cycle, particularly the influence of regional fluxes and long-range transport on spatial and temporal gradients in CO2 and CH4. We will also provide valuable Arctic ground-truth measurements for Japan's GOSAT and NASA's OCO-2 missions. The requested funding will support the visit of two graduate students per year to the PEARL facility at Eureka to conduct the planned research.

我的研究的总体目标是更好地了解确定大气组成和推动大气变化的过程，并使用各种工具和数据分析工具。该提案描述了两个采用红外光谱技术来解决“北极气氛的构成以及如何随着时间变化”至关重要的长期观察的两个项目，这些项目是必不可少的。北极被广泛认为是我们对全球变化的预警系统，加拿大北极大陆有义务，对自己的人口有义务，并且对全球社区有义务在未来几年中监测北极气氛。第一个项目涉及使用在尤里卡（Eureka）的极性环境大气研究实验室（PEARL）部署的傅里叶变换红外（FTIR）光谱仪进行的测量，对生物质燃烧和污染事件进行研究，北极高北极（80n，86W）。这些数据将用于研究对流层组成的变异性和趋势，并将与GEOS-Chem模型进行比较，以表征生物质燃烧和污染事件的起源，演变和影响并改善模型排放库存。第二个项目涉及在总碳柱观测网络（TCCON）的背景下对温室气体进行研究的研究，该网络（TCCON）于2010年6月加入。我们将实施该网络的数据分析协议，这是由总CO2的极端精度要求定义的。我们将与其他TCCON站点合作使用数据来研究碳循环，尤其是区域通量和远程传输对CO2和CH4中空间和时间梯度的影响。我们还将为日本的GOSAT和NASA的OCO-2任务提供有价值的北极真相测量。要求的资金将支持每年两名研究生访问Eureka的Pearl设施，以进行计划的研究。