TY - JOUR

T1 - A long-term (2002 to 2017) record of closed-path and open-path eddy covariance CO2 net ecosystem exchange fluxes from the Siberian Arctic

AU - Holl, David

AU - Wille, Christian

AU - Sachs, Torsten

AU - Schreiber, Peter

AU - Runkle, Benjamin R.K.

AU - Beckebanze, Lutz

AU - Langer, Moritz

AU - Boike, Julia

AU - Pfeiffer, Eva Maria

AU - Fedorova, Irina

AU - Bolshianov, Dimitry Y.

AU - Grigoriev, Mikhail N.

AU - Kutzbach, Lars

PY - 2019/2/18

Y1 - 2019/2/18

N2 - 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 multi-annual 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 eddy covariance flux observation stations (FLUXNET; site ID: Ru-Sam). The data set 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 database and can be accessed through https://doi.org/10.1594/PANGAEA.892751.

AB - 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 multi-annual 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 eddy covariance flux observation stations (FLUXNET; site ID: Ru-Sam). The data set 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 database and can be accessed through https://doi.org/10.1594/PANGAEA.892751.

UR - http://www.scopus.com/inward/record.url?scp=85061915192&partnerID=8YFLogxK

UR - http://www.mendeley.com/research/longterm-2002-2017-record-closedpath-openpath-eddy-covariance-cosub2sub-net-ecosystem-exchange-%EF%AC%82uxes

U2 - 10.5194/essd-11-221-2019

DO - 10.5194/essd-11-221-2019

M3 - Article

AN - SCOPUS:85061915192

VL - 11

SP - 221

EP - 240

JO - Earth System Science Data

JF - Earth System Science Data

SN - 1866-3508

IS - 1

ER -