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Discussion papers
https://doi.org/10.5194/essd-2018-98
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-2018-98
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

  08 Oct 2018

08 Oct 2018

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Earth System Science Data (ESSD).

A long-term (2002 to 2017) record of closed-path and open-path eddy covariance CO2 net ecosystem exchange fluxes from the Siberian Arctic

David Holl1, Christian Wille2, Torsten Sachs2, Peter Schreiber3, Benjamin R. K. Runkle4, Lutz Beckebanze1, Moritz Langer3, Julia Boike3, Eva-Maria Pfeiffer1, Irina Fedorova5, Dimitry Y. Bolshianov6, Mikhail N. Grigoriev7, and Lars Kutzbach1 David Holl et al.
  • 1Institute of Soil Science, Center for Earth System Research and Sustainability (CEN), Universität Hamburg, Hamburg, Germany
  • 2Helmholtz-Zentrum Potsdam – Deutsches GeoForschungsZentrum (GFZ), Potsdam, Germany
  • 3Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Potsdam, Germany
  • 4Department of Biological & Agricultural Engineering, University of Arkansas, Fayetteville, USA
  • 5Saint Petersburg State University – Institute of Earth Sciences, St. Petersturg, Russia
  • 6Arctic and Antarctic Research Institute, St. Petersburg, Russia
  • 7Permafrost Institute, Yakutsk, Russia

Abstract. Ground-based observations of land--atmosphere fluxes are necessary to progressively improve global climate models. Observed data can be used for model evaluation and to develop or tune process models. In arctic permafrost regions, climate–carbon feedbacks are amplified. Therefore, increased efforts to better represent these regions in global climate models have been made in recent years. We present a multiannual time series of land–atmosphere carbon dioxide fluxes measured in situ with the eddy covariance technique in the Siberian Arctic (72°22′N, 126°30′E). The site is part of the international network of carbon dioxide flux observation stations (FLUXNET, Site ID: Ru-Sam). The dataset includes consistently processed fluxes based on concentration measurements of closed-path and open-path gas analyzers. With parallel records from both sensor types, we were able to apply a site-specific correction to open-path fluxes. This correction is necessary due to a deterioration of data, caused by heat generated by the electronics of open-path gas analyzers. Parameterizing this correction for subperiods of distinct sensor setups yielded good agreement between open and closed-path fluxes. We compiled a long-term (2002 to 2017) carbon dioxide flux time series that we additionally gap-filled with a standardized approach. The data set was uploaded to the Pangaea data base and can be accessed through https://doi.pangaea.de/10.1594/PANGAEA.892751.

David Holl et al.
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A long-term (2002 to 2017) record of closed path and open path eddy covariance CO₂ net ecosystem exchange fluxes from the Siberian Arctic. D. Holl and L. Kutzbach https://doi.pangaea.de/10.1594/PANGAEA.892751

David Holl et al.
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Short summary
We present a multiannual time series of land–atmosphere carbon dioxide fluxes measured in situ with the eddy covariance technique in the Siberian Arctic. In arctic permafrost regions, climate–carbon feedbacks are amplified. Therefore, increased efforts to better represent these regions in global climate models have been made in recent years. Up to now, the available data base of in situ measurements from the Arctic was biased towards Alaska, records from the Eurasian Arctic were scarce.
We present a multiannual time series of land–atmosphere carbon dioxide fluxes measured in situ...
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