Instrumentation and Equipment for Air Chemistry/Meteorology Undergraduate Research and Education

大气科学（41）为本科生进行空气化学和空气污染边界层气象学的实地研究，为移动大气研究单元和系绳气球设施改装了一套升级和扩展的仪器和设备，使我们能够实施新的教育计划(McGinn， M.K.和W-M。罗斯，1999：培养学生胜任科学实践：科学技术研究的最新研究的意义。教育研究。第28卷第3期，1999年)。学生通过追求自己感兴趣的调查（科学探究），与同龄人合作解决问题，测试算法，发展协同见解和社会互动（科学话语），从事科学实践。气相和颗粒采样/分析仪，安装完整的便携性，用于收集/测量CO， SO2, O3, NOx， VOCs和PM2.5/10在实验室和现场设置。空气化学专业的学生以小组为单位工作，每个人负责仪器的校准和维护；收集、分析和质量评估测量；数据的可视化表示；以及结果的传播。这些工具用于验证定量分析中的概念，如过滤器相关方法，脉冲荧光，化学发光，紫外光度法，KI氧化，GC/MS分析和激光散射测定法（浊度法）。每个小组都研究气相物种之间的相互关系以及与气象条件和区域测量的相关性。协作学习是通过开放的讨论来激发的，因为信息的传播和话语实践在小组内部和小组之间出现，并达到整个班级的水平。学生在控制组和实验组任职期间，通过对实验室期刊的内容分析参与项目评估，并期望在互动话语的基础上撰写一篇联合反思论文。统计气象学、边界层气象学、环境化学、大气热力学、气象仪器、测量和观测系统等专业的学生通过发展解决问题的能力、批判性思维和协作能力，参与科学过程和探索科学概念，从中受益。作为三个主要的多机构实地研究项目（narstone - ne 1995、1996;NARSTONE-OPS 1998-2001）的一部分，用于系绳气球操作的流动空气质量实验室和地面站制作气象变量和臭氧浓度的垂直剖面。学生作为科学家学徒参与并负责从后勤到数据收集和出版的研究活动。化学分析仪和空气采样器与系留式多探空大气剖面仪一起部署，以研究边界层演化与地表微量气体种类变化之间的关系。在移动装置中部署的仪器的便携性允许在污染源附近和具有区域背景代表性的其他地点进行测量。可移植性还使K-12和社区团体能够进行扩展。气相标准污染物的浓度可通过气象学网站www.atmos.millersv.edu的链接实时获取。也有利用这些仪器的项目评估和科学调查结果。

Atmospheric Science (41) Adapting an upgraded and expanded suite of instruments and equipment for a mobile atmospheric research unit and tethered balloon facility for undergraduate field studies in air chemistry and air pollution boundary layer meteorology has allowed us to implement new educational initiatives (McGinn, M.K. and W-M. Roth, 1999: Preparing Students for Competent Scientific Practice: Implications of Recent Research in Science and Technology Studies. EDUCATIONAL RESEARCHER. Vol. 28, No. 3, 1999) . Students have engaged in the practice of science by pursuing investigations of their own interests (scientific inquiry), and collaborate with peers to solve problems, test algorithms, and develop synergistic insights and social interactions (scientific discourse). Gas-phase and particle samplers/analyzers, mounted for complete portability, are used to collect/measure CO, SO2, O3, NOx, VOCs, and PM2.5/10 in both lab and field settings. Students in Air Chemistry work in small groups, each responsible for the calibration and maintenance of instruments; collection, analysis, and quality assessment of measurements; visual representation of data; and dissemination of results. These tools are used to authenticate concepts in quantitative analysis such as filter correlation methods, pulsed fluorescence, chemiluminescence, UV photometry, KI oxidation, GC/MS analysis, and laser scatterometry (nephelometry). Each group investigates inter-relationships among gas-phase species and correlations with the meteorological conditions and regional measurements. Collaborative learning is stimulated through open discussion as information diffuses and discursive practices emerge within and between groups to the whole-class level. Students participate in the assessment of the project through content analysis of lab journals maintained while serving in control and experimental groups, and are expected to produce a joint-reflection paper based on interactive discourse. Students in Statistical Meteorology, Boundary Layer Meteorology, Environmental Chemistry, Atmospheric Thermodynamics, and Meteorological Instruments, Measurement, and Observing Systems are benefitting by engaging in the scientific process and exploration of scientific concepts through the development of problem-solving skills, critical thinking, and collaboration. The mobile air quality lab and ground station for tethered balloon operations produces vertical profiles of meteorological variables and ozone concentrations as part of three major multi-institutional field research programs (NARSTO-NE 1995, 1996; NARSTONE-OPS 1998-2001). Students participate as scientist apprentices responsible and accountable for research activities from logistics to data collection and publication. Chemical analyzers and air samplers are deployed in conjunction with a tethered multi-sonde atmospheric profiler to study the relationship between boundary layer evolution and the variability of surface trace gas species. The portability of instruments deployed in a mobile unit allows measurements to be obtained near sources of pollutants and at other locations representative of the regional background. Portability also enables outreach to K-12 and community groups. Concentrations of gas-phase criteria pollutants are available in real-time through a link to the meteorology Web site at www.atmos.millersv.edu. Also available are project assessments and results of scientific investigations using these instruments.