Cumulative greenhouse gas production in thawed sediments underneath a Yedoma and Alas thermokarst lake in Eastern Siberia

• Main Authors: Jongejans, Loeka Laura, Liebner, Susanne, Knoblauch, Christian, Mangelsdorf, Kai, Strauss, Jens
• Format: Dataset
• Language: English
• Published: PANGAEA 2021
• Subjects: Alas lake; Arctic; AWI Arctic Land Expedition; Biomarkers; Carbon dioxide; production; anaerobic; Carbon in Permafrost / Kohlenstoff im Permafrost; Central_Yakutia_Yukechi_2015; Central Yakutia; CLICCS; Cluster of Excellence: Climate; Climatic Change; and Society; Core; DATE/TIME; Day of experiment; Depth; bottom/max; sediment/rock; top/min; Event label; Gas chromatography; greenhouse gas production; KoPF; Methane; PETA-CARB; Rapid Permafrost Thaw in a Warming Arctic and Impacts on the Soil Organic Carbon Pool; RCDT; RU-Land_2015_CentralYakutia_Yuke; Sample ID; talik; thawed permafrost; thermokarst lake; Truck mounted rotary drill; Yedoma deposits; Yedoma lake; YUK15-YU-L15; YUK15-YU-L7; permafrost; Thermokarst; Yakutia; Siberia
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.928140; https://doi.org/10.1594/PANGAEA.928140

This dataset describes two 17 m long sediment cores taken from beneath two thermokarst lakes in the Yukechi Alas, Central Yakutia, Russia. The first core was taken from below an Alas thermokarst lake (YU-L7; 61.76397°N, 130.46442°E) and the second core below and Yedoma lake (YU-L15; 61.76086°N, 130.47466°E). The dataset presents the cumulative greenhouse gas production from sediment cores YU-L7 and YU-L15. We incubated the anaerobically at 4 °C for one year and measured carbon dioxide (CO2) and methane (CH4) concentrations biweekly in a 250 µL subsample using gas chromatography with an Agilent GC 7890A equipped with an Agilent HP-PLOT Q column. CO2 and CH4 concentrations are given over time for all sample with three replicates each.