Support for Atmospheric Field Research at Thule, Greenland

支持格陵兰图勒的大气实地研究

• 批准号: 0936365
• 负责人: Robert de Zafra
• 金额: $ 3.94万
• 依托单位: SUNY at Stony Brook
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2012-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0936365&HistoricalAwards=false
• 关键词: Support; Atmospheric; Field; Research; Thule

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).Funding for this award will enable continuation for three years of a program of trace gas measurements in the middle atmosphere (stratosphere and mesosphere) over Thule Air Base, Greenland, using a ground-based millimeter-wave spectrometer (GBMS). The GBMS employs remote sensing to detect and measure molecular rotational emission lines. The species observed are used in monitoring and measuring the chemical and physical state of the polar atmosphere, which undergoes rapid changes during the Winter-Spring period of active observation. The focus is on those species and processes related to stratospheric ozone depletion. Among the advantages of the GBMS technique are that observations are not dependent on sunlight, and that pressure-broadened spectral line shapes can be measured with great accuracy, allowing vertical distribution profiles to be deduced from deconvolution of the observed line shapes. The species to be observed are ozone, carbon monoxide, nitrous oxide, nitric acid, and hydrogen cyanide, and perhaps chlorine monoxide. The observations will continue a series of Arctic observations of the middle atmosphere carried out by the principal investigator and colleagues in the early springs of 2002, 2003, and 2009.This effort will coordinate with measurements conducted by National Aeronautics and Space Administration/Jet Propulsion Laboratory using the Microwave Limb Sounder on board the Aura satellite. Data collected in the course of these observations will also be archived for accessibility by the general scientific community in the data bank maintained by the Network for the Detection of Atmospheric Composition Change. Articles describing results of the research will be published in refereed scientific journals having world-wide circulation. In addition, the specific research activity will be carried out under an international collaborative effort also involving the Italian National Institute for Geophysics and Volcanology (INGV), and the University of Rome "La Sapienza", with the additional cooperation of the Danish Meteorological Institute (DMI). A University of Rome lidar will operate concurrently with the GBMS, providing key information on atmospheric parameters complementary to the GBMS dataset. INGV personnel will be heavily involved with the operation and maintenance of the GBMS. Both GBMS and lidar will be hosted at Thule Air Base in the laboratories of the DMI, where the instruments are housed in rooms set up and reserved for that purpose. Each participant and their national atmospheric research efforts benefit from the synergies of this cooperative work.

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。该奖项的资金将使格陵兰图勒空军基地上空中层大气（平流层和中间层）痕量气体测量计划得以持续三年，使用地基毫米波光谱仪（GBMS）。 GBMS利用遥感技术探测和测量分子旋转发射谱线。 观测到的物种被用于监测和测量极地大气的化学和物理状态，极地大气在冬、春两季的积极观测期间经历了迅速的变化。 重点是与平流层臭氧消耗有关的物种和过程。 GBMS技术的优点之一是观测不依赖于阳光，并且可以非常精确地测量压力加宽的光谱线形状，从而可以从观测到的线形状的去卷积中推导出垂直分布轮廓。 要观察的物质有臭氧、一氧化碳、一氧化二氮、硝酸和氰化氢，也许还有一氧化氯。 这些观测将继续由首席研究员及其同事在2002年、2003年和2009年早春对北极中层大气进行的一系列观测，这项工作将与美国国家航空航天局/喷气推进实验室利用Aura卫星上的微波临边探测器进行的测量相协调。 在这些观测过程中收集的数据也将在大气成分变化探测网络维持的数据库中存档，供一般科学界查阅。 描述研究结果的文章将发表在世界范围内发行的经评审的科学期刊上。 此外，还将在国际协作努力下开展具体的研究活动，意大利国家地球物理学和火山学研究所和罗马“La Sapienza”大学也将参与，丹麦气象研究所也将提供合作。 罗马大学的激光雷达将与GBMS同时运行，提供补充GBMS数据集的大气参数的关键信息。 INGV人员将大量参与GBMS的操作和维护。 GBMS和激光雷达都将被托管在图勒空军基地的实验室里，仪器被安置在为此目的而设立和保留的房间里。 每个参与者及其国家的大气研究工作都受益于这一合作工作的协同作用。