Continuous measurements of methane from a tower network over Siberia

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Sasakawa, M. ; Shimoyama, K. ; Machida, T. ; Tsuda, N. ; Suto, H. ; Arshinov, M. ; Davydov, D. ; Fofonov, A. ; Krasnov, O. ; Saeki, T. ; Koyama, Y. ; Maksyutov, S. (2011)

We have been conducting continuous measurements of Methane (CH4) concentration from an expanding network of towers (JR-STATION: Japan–Russia Siberian Tall Tower Inland Observation Network) located in taiga, steppe and wetland biomes of Siberia since 2004. High daytime means (>2000 ppb) observed simultaneously at several towers during winter, together with in situ weather data and NCEP/NCAR reanalysis data, indicate that high pressure systems caused CH4 accumulation at subcontinental scale due to the widespread formation of an inversion layer. Daytime means sometimes exceeded 2000 ppb, particularly in the summer of 2007 when temperature and precipitation rates were anomalously high over West Siberia, which implies that CH4 emission from wetlands were exceptionally high in 2007. Many hot spots detected by MODIS in the summer of 2007 illustrate that the contribution of biomass burning also cannot be neglected. Daytime mean CH4 concentrations from the Siberian tower sites were generally higher than CH4 values reported at NOAA coastal sites in the same latitudinal zone, and the difference in concentrations between two sets of sites was reproduced with a coupled Eulerian–Lagrangian transport model. Simulations of emissions from different CH4 sources suggested that the major contributor to variation switched from wetlands during summer to fossil fuel during winter.DOI: 10.1111/j.1600-0889.2010.00494.x
  • References (41)
    41 references, page 1 of 5

    Adler, R. F., Huffman, G. J., Chang, A., Ferraro, R., Xie, P. and coauthors. 2003. The version 2 global precipitation climatology project (GCPC) monthly precipitation analysis (1979-present). J. Hydrometeor 4, 1147-1167.

    Bergamaschi, P., Brenninkmeijer, C., Hahn, M., Ro¨ckmann, T., Scharffe, D. and co-authors. 1998. Isotope analysis based source identification for atmospheric CH4 and CO sampled across Russia using the TransSiberian railroad. J. Geophys. Res. 103, 8227-8235.

    Bousquet, P., Ciais, P., Miller, J.B., Dlugokencky, E.J., Hauglustaine, D.A. and co-authors. 2006. Contribution of anthropogenic and natural sources to atmospheric methane variability. Nature 443, 439-443.

    Dlugokencky, E.J., Houweling, S., Bruhwiler, L., Masarie, K.A., Lang, P.M. and co-authors. 2003. Atmospheric methane levels off: temporary pause or a new steady-state?. Geophys. Res. Lett. 30, doi:10.1029/2003GL018126.

    Dlugokencky, E.J., Bruhwiler, L., White, J.W.C., Emmons, L.K., Novelli, P.C. and co-authors. 2009a. Observational constraints on recent increases in the atmospheric CH4 burden. Geophys. Res. Lett. 36, doi:10.1029/2009GL039780.

    Dlugokencky, E.J., Lang, P.M. and Masarie, K.A. 2009b. Atmospheric methane dry air mole fractions from the NOAA ESRL carbon cycle cooperative global air sampling network, 1983-2008, Version: 2009-06- 18. Available at:

    Fung, I., John, J., Lerner, J., Matthews, E., Prather, M. and co-authors. 1991. Three-dimensional model synthesis of the global methane cycle. J. Geophys. Res. 96, 13033-13065.

    Gedney, N., Cox, P. and Huntingford, C. 2004. Climate feedback from wetland methane emissions. Geophys. Res. Lett. 31, doi: 10.1029/2004GL020919.

    IPCC 2007. Climate Change 2007: The Physical Science Basis, Contribution of Working Group I to the Fourth Assessment, Report of the Intergovernmental Panel on Climate Change (eds S. Solomon, D. Qin, M. Manning, Z. Chen, M. Marquis, and co-editors). Cambridge Univ. Press, New York.

    Kalnay, E., Kanamitsu, M., Kistler, R., Collins, W., Deaven, D. and co-authors. 1996. The NCEP/NCAR 40-year reanalysis project. Bull. Amer. Meteor. Soc. 77, 437-470.

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