Methane concentrations in the water and ice columns of thermokarst ponds in Subarctic Norway

The dataset presents methane concentrations measured in the water and ice columns of nine shallow ponds located in two permafrost peatlands (Iškoras and Áidejávri) in northern Norway during the 2023–2024 ice-cover season. The dataset also contains pH and dissolved organic carbon (DOC) for both ice and water samples, pond coordinates, and pond depths. This dataset contains the raw data for the following manuscript: Pismeniuk, A., Dörsch, P., Ippach, M., Willmes, C., Sheffield, S., Pirk, N., and Westermann, S.: Wintertime Production and Storage of Methane in Thermokarst Ponds of Subarctic Norway, EGUsphere [preprint], https://doi.org/10.5194/egusphere-2025-3059, 2025.本数据集收录了挪威北部两处永久冻土泥炭地（permafrost peatlands）Iškoras与Áidejávri内9个浅池塘在2023-2024年冰盖季期间，水体与冰层柱中的甲烷浓度实测数据。数据集同时包含冰样与水样的pH值、溶解性有机碳（dissolved organic carbon，DOC），以及各池塘的坐标与水深。 本数据集为以下论文提供原始数据： Pismeniuk, A., Dörsch, P., Ippach, M., Willmes, C., Sheffield, S., Pirk, N. 及Westermann, S.：《亚北极挪威热融喀斯特池塘冬季甲烷生成与储存》，EGUsphere[预印本]，https://doi.org/10.5194/egusphere-2025-3059，2025年。