Articles | Volume 16, issue 3
Research article
11 Feb 2019
Research article |  | 11 Feb 2019

Multi-year effect of wetting on CH4 flux at taiga–tundra boundary in northeastern Siberia deduced from stable isotope ratios of CH4

Ryo Shingubara, Atsuko Sugimoto, Jun Murase, Go Iwahana, Shunsuke Tei, Maochang Liang, Shinya Takano, Tomoki Morozumi, and Trofim C. Maximov

Data sets

Global Historical Climatology Network - Daily (GHCN-Daily), Version 3.22 M. J. Menne, I. Durre, B. Korzeniewski, S. McNeal, K. Thomas, X. Yin, S. Anthony, R. Ray, R. S. Vose, B. E. Gleason, and T. G. Houston

Chamber CH4 flux observed at taiga-tundra boundary near Chokurdakh in northeastern Siberia during the summer from 2009 to 2013 as well as isotopic compositions of dissolved CH4 and soil incubation experiments R. Shingubara, A. Sugimoto, J. Murase, G. Iwahana, S. Tei, M. Liang, S. Takano, T. Morozumi, and T. C. Maximov

Short summary
(1) Wetting event with extreme precipitation increased methane emission from wetland, especially two summers later, despite the decline in water level after the wetting. (2) Isotopic compositions of methane in soil pore water suggested enhancement of production and less significance of oxidation in the following two summers after the wetting event. (3) Duration of water saturation in the active layer may be important for predicting methane emission after a wetting event in permafrost ecosystems.
Final-revised paper