Modelling CH&amp;lt;sub&amp;gt;4&amp;lt;/sub&amp;gt; emissions from arctic wetlands: effects of hydrological parameterization

Petrescu, Ana Maria Roxana; Huissteden, J. van; Jackowicz-Korczyński, Marcin; Yurova, Alla; Christensen, Torben R.; Crill, P. M.; Bäckstrand, Kristina; Maximov, Trofim C.

doi:10.5194/bg-5-111-2008

Cited by 46 publications

(43 citation statements)

References 38 publications

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“…This is comparable with some other previous studies in wetlands such as 4.7 mg CH 4 m −2 h −1 (2004 to 2006) and 6.2 ± 2.6 mg CH 4 m −2 h −1 (2006 and 2007) for Stordalen (Petrescu et al, 2008;Jackowicz-Korczynski et al, 2010). Similar to the chamber measurements, this may be because the eddy covariance footprint is more specific to a single land type than the aircraft in this instance.…”

Section: Ground-based Flux Measurementssupporting

confidence: 80%

“…Ground-based CH 4 flux measurements have now been made for multiple years in several wetland locations within northern Fennoscandia, these include the Stordalen wetlands, in sub-arctic Sweden (68.33 • N, 19.05 • E; Christensen et al, 2012), and both Kaamanen (69.1 • N, 27.2 • E; Maanavilja et al, 2011) and Lompolojänkkä (68. (Petrescu et al, 2008;Jackowicz-Korczynski et al, 2010). Mean July CO 2 fluxes are −1152 mg CO 2 m −2 h −1 , −576 mg CO 2 m −2 h −1 and −504 mg CO 2 m −2 h −1 for Lompolojänkkä, Kaamanen and Siikaneva, respectively (Aurela et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Methane and carbon dioxide fluxes and their regional scalability for the European Arctic wetlands during the MAMM project in summer 2012

et al. 2014

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Abstract. Airborne and ground-based measurements of methane (CH 4 ), carbon dioxide (CO 2 ) and boundary layer thermodynamics were recorded over the Fennoscandian landscape (67-69.5 • N, 20-28 • E) in July 2012 as part of the MAMM (Methane and other greenhouse gases in the Arctic: Measurements, process studies and Modelling) field campaign. Employing these airborne measurements and a simple boundary layer box model, net regional-scale (∼ 100 km) fluxes were calculated to be 1.2 ± 0.5 mg CH 4 h −1 m −2 and −350 ± 143 mg CO 2 h −1 m −2 . These airborne fluxes were found to be relatively consistent with seasonally averaged surface chamber (1.3 ± 1.0 mg CH 4 h −1 m −2 ) and eddy covariance (1.3 ± 0.3 mg CH 4 h −1 m −2 and −309 ± 306 mg CO 2 h −1 m −2 ) flux measurements in the local area. The internal consistency of the aircraft-derived fluxes across a wide swath of Fennoscandia coupled with an excellent statistical comparison with local seasonally averaged ground-based measurements demonstrates the potential scalability of such localised measurements to regional-scale representativeness. Comparisons were also made to longerterm regional CH 4 climatologies from the JULES (Joint UK Land Environment Simulator) and HYBRID8 land surface models within the area of the MAMM campaign. The average hourly emission flux output for the summer period Based on these observations both models were found to significantly underestimate the CH 4 emission flux in this region, which was linked to the under-prediction of the wetland extents generated by the models.

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Section: Ground-based Flux Measurementssupporting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Methane and carbon dioxide fluxes and their regional scalability for the European Arctic wetlands during the MAMM project in summer 2012

et al. 2014

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“…Although the uncertainty ranges are quite wide, the actual values compare rather well. This model was used successfully also for methane fluxes in Stordalen, Abisko, Sweden (Petrescu et al, 2007). The methane model was used to scale up the observed fluxes in time to the complete length of the growing season for the sites around the flux tower.…”

Section: Validation Of Partitioning Of Nee Into R Eco and Gppmentioning

confidence: 99%

“…The methane model was used to scale up the observed fluxes in time to the complete length of the growing season for the sites around the flux tower. The wet floodplain (FW) have been modelled by Petrescu et al (2007) but are not considered here because the data from the floodplain do not permit a consistent comparison between CO 2 and CH 4 fluxes.…”

Section: Validation Of Partitioning Of Nee Into R Eco and Gppmentioning

confidence: 99%

“…The ground water table is modelled as a function of the balance between precipitation and evaporation, which are both observed, and snowmelt, using a modified version of the model of Granberg et al (1999). The modelling of the water table for the site and the methane flux simulations using the modelled water table are described in a separate publication by Petrescu et al (2007). With PEATLAND-VU, methane fluxes were simulated for three different vegetation types representative for the vegetation around the tower site: Carex vegetations (TW1 type), Sphagnum vegetations (TW3-4 type) and dry tundra vegetation (TD types).…”

Section: Validation Of Partitioning Of Nee Into R Eco and Gppmentioning

confidence: 99%

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The growing season greenhouse gas balance of a continental tundra site in the Indigirka lowlands, NE Siberia

et al. 2007

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Abstract. Carbon dioxide and methane fluxes were measured at a tundra site near Chokurdakh, in the lowlands of the Indigirka river in north-east Siberia. This site is one of the few stations on Russian tundra and it is different from most other tundra flux stations in its continentality. A suite of methods was applied to determine the fluxes of NEE, GPP, R eco and methane, including eddy covariance, chambers and leaf cuvettes. Net carbon dioxide fluxes were high compared with other tundra sites, with NEE=−92 g C m −2 yr −1 , which is composed of an R eco =+141 g C m −2 yr −1 and GPP=−232 g C m −2 yr −1 . This large carbon dioxide sink may be explained by the continental climate, that is reflected in low winter soil temperatures (−14 • C), reducing the respiration rates, and short, relatively warm summers, stimulating high photosynthesis rates. Interannual variability in GPP was dominated by the frequency of light limitation (R g <200 W m −2 ), whereas R eco depends most directly on soil temperature and time in the growing season, which serves as a proxy of the combined effects of active layer depth, leaf area index, soil moisture and substrate availability. The methane flux, in units of global warming potential, was +28 g C-CO 2 e m −2 yr −1 , so that the greenhouse gas balance was −64 g C-CO 2 e m −2 yr −1 . Methane fluxes depended only slightly on soil temperature and were highly sensitive to hydrological conditions and vegetation composition.

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2018

Environmental Applications of Digital Terrain Modeling

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Modelling CH<sub>4</sub> emissions from arctic wetlands: effects of hydrological parameterization

Abstract: Abstract. This study compares the CH 4

Cited by 46 publications

References 38 publications

Methane and carbon dioxide fluxes and their regional scalability for the European Arctic wetlands during the MAMM project in summer 2012

Methane and carbon dioxide fluxes and their regional scalability for the European Arctic wetlands during the MAMM project in summer 2012

The growing season greenhouse gas balance of a continental tundra site in the Indigirka lowlands, NE Siberia

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