Thermal regime and thickness of the active layer respond rapidly to climate variations, and thus they are important measures of cryosphere changes in polar environments. We monitored air temperature and ground temperature at a depth of 5 cm and modeled active‐layer thickness using the Stefan and Kudryavtsev models at the Abernethy Flats site, James Ross Island, Eastern Antarctic Peninsula, in the period March 2006 to February 2016. The decadal average of air and ground temperature was −7.3 and −6.1°C, respectively, and the average modeled active‐layer thickness reached 60 cm. Mean annual air temperature increased by 0.10°C y−1 over the study period, while mean annual ground temperature showed the opposite tendency of −0.05°C y−1. The cooling took place mainly in summer and caused thawing season shortening and active‐layer thinning of 1.6 cm y−1. However, these trends need to be taken carefully because all were non‐significant at p

中文翻译：

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2006-2016 年南极半岛东部詹姆斯罗斯岛近地表地热状态和模拟活动层厚度的演变

活动层的热状况和厚度对气候变化反应迅速，因此它们是极地环境冰冻圈变化的重要措施。2006 年 3 月至 2016 年 2 月期间，我们在南极半岛东部詹姆斯罗斯岛的 Abernethy Flats 场地使用 Stefan 和 Kudryavtsev 模型监测了 5 厘米深度的气温和地表温度，并模拟了活动层厚度。空气和地面温度的平均值分别为-7.3°C和-6.1°C，平均模拟活性层厚度达到60 cm。在研究期间，年平均气温增加了 0.10°C y−1，而年平均地温显示出相反的趋势，即 -0.05°C y−1。降温主要发生在夏季，导致解冻季节缩短，活动层减薄 1.6 cm y−1。