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Collaborative Research: Stratosphere-Troposphere Analyses of Regional Transport (START) Experiment (2008)

合作研究：区域运输的平流层-对流层分析 (START) 实验 (2008)

基本信息

批准号：
0722225
负责人：
Kenneth Bowman
金额：
$ 20万
依托单位：
Texas A&M Research Foundation
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2007
资助国家：
美国
起止时间：
2007-09-15 至 2010-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0722225&HistoricalAwards=false
关键词：
Collaborative Research Stratosphere Troposphere Analyses

项目摘要

The collaborative field experiment, Stratosphere-Troposphere Analyses of Regional Transport (START08), will study the chemical and transport characteristics of the extratropical upper tropospheric and lower stratospheric (ExUTLS) region. The experiment, which will take place during the Spring 2008 time period, utilizes the NSF/NCAR High-performance Instrumented Airborne Platform for Environmental Research (HIAPER) which has the range, endurance, and altitude ceiling necessary to conduct the research. The objective of the experiment is to use in situ chemical, microphysical, and dynamical measurements, satellite data, and models to better understand the multi-scale dynamical processes that control the chemical composition and microphysics of the ExUTLS. In particular, the investigation will focus on the behavior of the extratropical tropopause as a transport boundary and on key chemical transport pathways and the related dynamical processes. These processes include breaking of Rossby waves, the growth and decay of synoptic-scale waves, tropopause folds and warm conveyor belts, the development of frontal systems, initiation and breaking of gravity waves, and deep convection. In addition, these processes control the formation and evolution of the ice cloud layers in the ExUTLS. This field study will use tracer-tracer correlations as a diagnostic tool for transport in the UTLS region. The results of the experiment will include a set of diagnostics of chemical transitions between the UT and LS, an estimate of the lifetime of the air mass in the extra-tropical transition layer, and tracer characterizations of major transport processes that couple the UT and LS and which determine the structure and chemical composition of the UTLS. A small suite of microphysical probes will quantify the ice mass and water content of clouds in the UT/LS. With the enhanced measurement capability and platform compared to some earlier studies, START08 will provide more insight into the behavior of tracers and their relationships under the influence of targeted dynamical processes, and expand the database for establishing a theoretical framework for testing models. The project supports the development of community research capabilities in significant ways. START08 will train graduate students and post-doctoral scientists in both instrumental/analytical atmospheric chemistry and data analysis done collaboratively with modelers and other science team members. Research from the START08 project will be used to enhance current graduate education classes in atmospheric science. Additional educational outreach is planned that includes interaction with ongoing programs (e.g., National Ocean Science Bowl, and Project IMPACT).

合作实地实验“平流层-对流层区域输运分析”(START08)将研究温带对流层上层和平流层下层(ExUTLS)区域的化学和输运特征。该实验将于 2008 年春季进行，利用 NSF/NCAR 环境研究高性能仪表机载平台 (HIAPER)，该平台具有进行研究所需的航程、续航力和高度上限。该实验的目的是利用原位化学、微物理和动力学测量、卫星数据和模型来更好地了解控制 ExUTLS 化学成分和微物理的多尺度动力学过程。特别是，研究将重点关注温带对流层顶作为传输边界的行为以及关键的化学传输路径和相关的动力学过程。这些过程包括罗斯贝波的破裂、天气尺度波的生长和衰减、对流层顶褶皱和温暖的传送带、锋面系统的发展、重力波的产生和破裂以及深层对流。此外，这些过程控制着 ExUTLS 中冰云层的形成和演化。这项实地研究将使用示踪剂-示踪剂相关性作为 UTLS 区域运输的诊断工具。实验结果将包括对 UT 和 LS 之间化学转变的一系列诊断、对温带过渡层中气团寿命的估计，以及耦合 UT 和 LS 并确定 UTLS 的结构和化学成分的主要传输过程的示踪特征。一小组微物理探测器将量化 UT/LS 中云的冰质量和水含量。与早期的一些研究相比，START08具有增强的测量能力和平台，将更深入地了解示踪剂在目标动态过程影响下的行为及其关系，并扩展数据库以建立测试模型的理论框架。该项目以重要方式支持社区研究能力的发展。 START08 将与建模师和其他科学团队成员合作，对仪器/分析大气化学和数据分析方面的研究生和博士后科学家进行培训。 START08 项目的研究将用于加强当前大气科学研究生教育课程。计划开展额外的教育推广活动，包括与正在进行的项目（例如国家海洋科学碗和 Project IMPACT）互动。