Thaw depth in the International Tundra Experiment (ITEX) plots at Barrow and Atqasuk, Alaska 2019

Arctic ecosystems are changing in response to arctic warming, which is proceeding more than twice as fast as the global average. The International Tundra Experiment (ITEX) was established in the early 1990s to understand the effects of warming and environmental variability on tundra vegetation properties and ecosystem function. The ITEX program has been extremely valuable for detection of changes in tundra plant and ecosystem responses to experimental warming and to background climate change across sites that span the major ecosystems of the Arctic. These files contain data representing the thaw depths of ITEX plots in Barrow and Atqasuk in a text tab delimited format. The data presented are daily to seasonal thaw depths of 48 plots (24 experiment open-top chamber plots and 24 control plots) at four sites (Atqasuk Wet Meadow, Atqasuk Dry Heath, Barrow Wet Meadow, and Barrow Dry Heath).

北极生态系统正随北极变暖发生演变，而北极变暖的速率是全球平均水平的两倍以上。国际冻原实验计划（International Tundra Experiment, ITEX）于20世纪90年代初启动，旨在探明增温与环境变异性对冻原植被特征及生态系统功能的影响。ITEX项目覆盖北极多数主要生态系统的多个研究站点，其在检测冻原植物及生态系统对实验性增温与背景气候变化的响应变化方面，具有极高的科研价值。本数据集文件以文本制表符分隔格式，存储了巴罗（Barrow）与阿特加索克（Atqasuk）两地ITEX样地的冻融深度数据。本次公开的数据为48个样地在4个站点的日尺度至季节尺度冻融深度，其中48个样地包含24个开放式顶箱增温实验样地与24个对照样地，4个站点分别为阿特加索克湿草甸、阿特加索克干石南荒原、巴罗湿草甸、巴罗干石南荒原。