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

国际冻土带实验（ITEX）于1990年成立，旨在测试温度升高对冻土带植物物候学、生长、物种组成和生态系统功能的影响。自2007年以来，ITEX-北极观测网（ITEX- aon）在阿拉斯加和格陵兰岛的五个地点的纬度样带上继续并扩展了ITEX计划，收集了专门设计用于解决北极环境变化研究（SEARCH）实施报告中概述的当前需求的核心ITEX数据。这项工作的目标是保持阿拉斯加和格陵兰ITEX-AON临时关键数据集的连续性。核心数据集包括ITEX长期控制和实验增温样地的物物学、植被结构和组成、生态系统功能和地表特性的长期人工观测数据，1km2 ARCSS网格植被样地的重复测量数据，以及格陵兰多因素增温-湿度实验数据。在小尺度上同时测量多种表面特性，可以发现以前未认识到的关系，例如，在密集样带的苔藓占主导地位的地区，反照率越高，温度越高。继续进行这些测量是必要的，因为越来越多的证据表明，以前的生长季节对当前和未来的反应的携带效应至关重要，而且系统固有的可变性排除了在几年的基础上确定系统反应的可能性。这个项目的数据可以在ACADIS网站上免费获取。该项目将继续在初始阶段建立广泛的外展活动，包括仙童热带植物园（FTBG）和GVSU区域数学和科学中心以及迈阿密，安克雷奇，大急流城和埃尔帕索的学校系统之间的牢固关系。

The International Tundra Experiment (ITEX) was chartered in 1990 to test the effects of increased temperature on tundra plant phenology, growth, species composition and ecosystem function. Since 2007, the ITEX-Arctic Observatory Network (ITEX-AON) has continued and expanded on the ITEX program across a latitudinal transect of five sites in Alaska and Greenland, collecting core ITEX data specifically designed to address the current needs outlined in the Study of Environmental Arctic Change (SEARCH) Implementation Report. The goal of this effort is to maintain the continuity of the temporally-critical datasets of the ITEX-AON in Alaska and Greenland. Core datasets include the long-term manual observations of phenology, vegetation structure and composition, ecosystem function, and surface properties on the long-term ITEX control and experimental warming plots, repeat measurement of the vegetation plots on the 1km2 ARCSS grids, and a multifactor warming-moisture experiment in Greenland. The simultaneous measurement of multiple surface properties at the small scale has allowed detection of relationships not previously recognized, e.g., in moss-dominated areas of the intensive transects, higher albedo is linked to higher temperatures. Continuation of these measurements is imperative because increasing evidence points towards the critical importance of carry-over effects of the previous growing seasons on current and future responses and the inherent variability in the system precluded determination of the system response on the basis of a few years. Data from this project are freely available on the ACADIS website. The project will continue extensive outreach activities established in the initial phase, including strong relationships between the Fairchild Tropical Botanic Garden (FTBG) and the GVSU Regional Math and Science Center and school systems in Miami, Anchorage, Grand Rapids, and El Paso.