SGER: Surface and Boundary-Layer Profiling during OASIS using the CU Tethered Balloon Platform
SGER:使用 CU 系留气球平台在 OASIS 期间进行表面和边界层分析
基本信息
- 批准号:0902165
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2008
- 资助国家:美国
- 起止时间:2008-12-01 至 2010-05-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
This project will deploy two kinds of tethered balloons to collect vertical profile data in support of the Ocean-Atmosphere-Sea Ice-Snowpack Interactions in Polar Regions (OASIS) project in lieu of constructing a 40m walk-up tower. OASIS will be in the field near Barrow, Alaska in winter/spring 2009. A small, i.e. 12-foot diameter balloon, will be deployed for measuring meteorological parameters and ozone profiles 2-3 times per day between the surface and ~600 m altitude. A second experiment, using a larger and stronger lift, i.e. 20-foot-diameter balloon, will raise three sampling lines to heights of ~120, 80, and 40 m. Air pulled from these inlets will be analyzed for trace gases with monitors located in instrument shelters on the ground. Measurements from the stationary balloon inlets will include nitrogen oxides (NOx), as well as nonmethane hydrocarbons (NMHC), and peroxyacyl nitrates (e.g. PAN), yielding the first high resolution, simultaneous, and continuous NOx, NMHC and PAN vertical profiles from a polar research site. The balloon meteorological data will reveal the boundary layer mixing conditions; this information will allow evaluation and further interpretation of surface measurements. The tethered balloon data will be of extremely high value for input and validation of chemical modeling to be done in the context of OASIS. A particular emphasis will be to elucidate the radical chemistry that leads to ozone and mercury depletion events in the coastal arctic environment. Furthermore, this research ties into the question of how atmospheric chemical processing is connected to ecological impacts, and how climate change will feedback on these interactions. OASIS will entail a multitude of new surface exchange and atmospheric measurements in an international collaborative effort during International Polar Year. Data and findings from this work will be readily shared among all OASIS scientists for broader dissemination of the research implications. Analytical developments within this project will be beneficial for future atmospheric research applications. This experiment will bring together scientists, including students, from the University of Colorado and National Center for Atmospheric Research, as well as from other OASIS-participating research institutions. One CU graduate student will be supported from this grant and participate in the field work. Balloon operations attract a lot of public attention and are particularly fascinating for school children. Students and teachers from Barrow schools will be invited to the balloon site for a tour of the balloon experiment and its scientific purpose. This is a Small Grant for Exploratory Research due to the very short timeline to put the vertical profile equipment in place to meet the research requirements of OASIS and as a novel approach to collecting atmospheric measurements of this kind.
该项目将部署两种系绳气球来收集垂直剖面数据,以支持海洋-大气-海洋-极地地区冰雪相互作用(OASIS)项目,而不是建造一座40米高的无电梯塔。OASIS将于2009年冬/春在阿拉斯加州巴罗附近的野外进行。天文台会在地面至约600米高度之间,放置一个直径12英尺的小型气球,每天测量气象参数及臭氧剖面图2-3次。第二个实验,使用更大更强的升力,即直径20英尺的气球,将三条采样线提升到约120米、80米和40米的高度。从这些入口抽出的空气将被放置在地面仪器遮蔽处的监测器分析痕量气体。来自固定气球入口的测量将包括氮氧化物(NOx)、非甲烷碳氢化合物(NMHC)和过氧酰基硝酸盐(如PAN),从极地研究地点获得第一个高分辨率、同时和连续的NOx、NMHC和PAN垂直剖面。气球气象数据将揭示边界层混合情况;这些信息将有助于评估和进一步解释地表测量结果。系留气球数据对于在OASIS环境下进行的化学建模的输入和验证将具有极高的价值。特别强调的是阐明导致北极沿海环境中臭氧和汞消耗事件的自由基化学。此外,这项研究还涉及到大气化学过程如何与生态影响相关联的问题,以及气候变化如何对这些相互作用进行反馈。在国际极地年期间,OASIS将需要在国际合作的努力下进行大量新的地面交换和大气测量。这项工作的数据和发现将很容易在所有OASIS科学家之间共享,以更广泛地传播研究意义。该项目的分析发展将有利于未来的大气研究应用。这项实验将汇集来自科罗拉多大学和国家大气研究中心的科学家,包括学生,以及来自其他绿洲参与研究机构的科学家。一名科罗拉多大学研究生将获得该资助并参与实地工作。气球活动吸引了很多公众的注意力,对学生来说尤其有趣。来自巴罗学校的学生和老师将被邀请到气球现场参观气球实验及其科学目的。这是一笔用于探索性研究的小额拨款,因为将垂直剖面设备放置到位以满足OASIS的研究要求的时间非常短,并且作为收集此类大气测量的新方法。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Detlev Helmig其他文献
Detlev Helmig的其他文献
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