Arctic Observing Networks: Collaborative Research: Sustaining and amplifying the ITEX AON through automation and increased interdisciplinarity of observations

北极观测网络：合作研究：通过自动化和增加观测的跨学科性来维持和扩大 ITEX AON

• 批准号: 0856628
• 负责人: Craig Tweedie
• 金额: $ 40.05万
• 依托单位: University of Texas at El Paso
• 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: 2009-08-15 至 2014-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0856628&HistoricalAwards=false
• 关键词: Arctic; Observing; Networks; Collaborative; Research

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). The goal of this project is to maintain the existing ITEX AON and increase the applicability of the data collected to the greater scientific community. The International Tundra Experiment (ITEX) network has collected data on phenology, plant growth, community composition and ecosystem properties as part of a greater effort to study environmental arctic change. The network, started in early 1990?s, has played a key role in advancing knowledge related to the likely impacts of a warmer arctic through the use of experimentally warmed and un-manipulated plots (i.e., the controls) across a range of sites and ecosystems that span the major vegetation types of the Arctic. While of great value, most ITEX measurements are labor intensive and time consuming, which limit the frequency and spatial extent of sampling. Recent advances in sensor technology hold the promise to allow sampling of surrogates of these manual measurements rapidly and over larger areas. This work will continue the ITEX AON observations and initiate a suite of related, non-intrusive measurements using robotic sensor platforms (networked infomechanical systems, NIMS). These new measurements will enable scaling of measurements to the regional level by linking to existing 1 km2 sample grids and satellite imagery. These data are urgently needed to improve our capacity to monitor the impacts of changing tundra vegetation on the arctic system. This work should improve our understanding of the exchange of carbon and water across the land atmosphere interface and provide information on forage quality for herbivores.

该奖项是根据2009年《美国复苏与再投资法》（公法111-5）资助的。该项目的目的是维护现有的ITEX AON，并增加收集到更大科学界的数据的适用性。国际苔原实验（ITEX）网络已收集了有关物候，植物生长，社区组成和生态系统特性的数据，这是研究环境北极变化的更大努力的一部分。该网络始于1990年代初，在通过使用实验温暖和未经操纵的地块（即对照组）跨越北极类型的一系列地点和生态系统，通过使用实验温暖和未经操纵的地块（即对照组）来促进与北极较温暖的北极地区的可能影响相关的知识的关键作用。尽管有很大的价值，但大多数ITEX测量值是劳动密集型和耗时的，这限制了采样的频率和空间范围。传感器技术的最新进展有望允许迅速和更大的区域对这些手动测量的替代物进行采样。这项工作将继续进行ITEX AON观察结果，并使用机器人传感器平台（网络信息机械系统，NIMS）启动一套相关的，非侵入性的测量值。这些新的测量结果将通过链接到现有的1 km2样品网格和卫星图像来将测量结果缩放到区域水平。迫切需要这些数据以提高我们监测苔原植被对北极系统的影响的能力。这项工作应提高我们对在整个陆地大气界面上碳和水的交换的理解，并提供有关食草动物的草食质量的信息。