AON: Atmospheric Tracers for Arctic Wildfires, Air Pollution, Atmospheric Chemistry, and Climate Change at GEOSummit, Greenland

北极的气候变暖比地球上任何其他环境都要大2-3。近年来，沿海格陵兰的苔原野火事件有所增加，2017年夏季创下了新的历史纪录。越来越多的文献表明，北极野火的增加在很大程度上是由于夏季条件更加干燥，因为气温上升，无雪季节的长度增加，以及闪电增加，所有这些都与北极变暖有关。这个项目的重点是研究北极冻土带野火的排放。位于顶峰的格陵兰环境观测站(GEOSummit)将监测大气中包括一氧化碳、甲烷和一系列挥发性有机化合物在内的野火的化学示踪物。虽然格陵兰环境观测站被认为是北半球最原始和最偏远的地点之一，但此前已有证据表明，该观测站可以接收来自沿海格陵兰和其他更远的北极地区的火柱。该项目将在模拟研究中应用观测，以评估火灾频率和地理范围的增加对北极环境和低纬度地区的影响。该项目将在GEOSummit会议上提供野火排放和气候强迫大气成分的连续高时间分辨率数据。所有数据将提交给北极数据中心，供全球传播。数据分析和建模将改进对火灾排放及其环境和气候影响的评估。结果和解释将在大学课堂教学、研讨会、会议和同行评议的期刊出版物中公布。观测将为世界气象组织(WMO)的全球大气观测(GAW)计划做出重要贡献。这项研究还将为下列项目作出贡献：北极环境变化研究(SEARE)、冰冻圈和大气化学研究(CATCH)、北极污染：气候、环境和社会(PACE)以及国际极地预测年(YOPP)。该奖项反映了NSF的法定使命，通过使用基金会的智力优势和更广泛的影响审查标准进行评估，认为值得支持。

Climate warming in the Arctic has been 2-3 greater than in any other environment on Earth. There has been an increase in tundra wildfire occurrences in coastal Greenland in recent years, setting a new all-time record in summer 2017. A growing body of literature suggests that this increase in arctic wildfires is largely due to drier summer conditions from increasing temperatures, increasing length of the snow-cover free season, and increased lightning, all of which are linked to the arctic warming. This project focuses on the study of emissions from arctic tundra wildfires. Chemical tracers of wildfires, including carbon monoxide, methane, and a series of volatile organic compounds will be monitored in the atmosphere at the Greenland Environmental Observatory at Summit (GEOSummit), which, while considered one of the most pristine and remote locations in the Northern Hemisphere, has previously been shown to receive fire plumes from coastal Greenland and other arctic regions further away. Observations will be applied in modeling research to assess the impacts of the increasing frequency and geographical extent of fires on the arctic environment and lower latitudes.This project will deliver continuous high time resolution data for wildfire emission and climate forcing atmospheric constituents at GEOSummit. All data will be submitted to the Arctic Data Center for worldwide dissemination. Data analyses and modeling will improve assessments of fire emissions and their environmental and climate impacts. Results and interpretations will be presented in university class room teaching, seminars, at conferences, and in peer-reviewed journal publications. Observations will make a pivotal contribution to the World Meteorological Organization (WMO) Global Atmospheric Watch (GAW) program. This research will also contribute to the following programs: Study of Environmental Arctic Change (SEARCH), Cryosphere and Atmospheric Chemistry (CATCH), Pollution in the Arctic: Climate, Environment and Societies (PACES), and the international Year of Polar Prediction (YOPP). It addresses the need for ?long-term atmospheric measurements?, as stipulated in the Report on the Future of Atmospheric Chemistry Research to NSF.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.