Mobile Instrumented Sensor Platform (MISP) Datalogger Toolik, Alaska, 2015

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 1 km 2 Arctic Systems Science (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. This data package contains logger records from the Mobile Instrumented Sensor Platform (MISP) system, transect length: ~50 m.国际冻原实验（International Tundra Experiment, ITEX）于1990年正式设立，旨在探究温度升高对冻原植物物候、生长、物种组成及生态系统功能的影响。2007年起，国际冻原实验北极观测网络（ITEX-Arctic Observatory Network, ITEX-AON）延续并拓展了原ITEX项目的研究范畴，在阿拉斯加与格陵兰的5个站点组成的纬度样带上开展研究，采集专门针对《北极环境变化研究（Study of Environmental Arctic Change, SEARCH）实施报告》中明确的当前研究需求而设计的核心ITEX数据。本工作的目标是维持阿拉斯加与格陵兰地区ITEX-AON的时序关键数据集的连续性。核心数据集包括长期ITEX对照与实验增温样地中关于物候、植被结构与组成、生态系统功能及地表属性的长期人工观测数据；1平方千米北极系统科学（Arctic Systems Science, ARCSS）网格内植被样地的重复测量数据；以及格陵兰地区的多因子增温-湿度控制实验数据。在小尺度下同步测定多种地表属性，使研究人员得以发现此前未被认知的关联关系——例如在密集样带的苔藓主导区域中，更高的反照率与更高的地表温度存在相关性。本数据包包含移动智能传感器平台（Mobile Instrumented Sensor Platform, MISP）系统的记录仪记录数据，样带长度约为50米。