Modelling CH4 emissions from arctic wetlands: effects of hydrological parameterization.
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| Title: | Modelling CH |
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| Authors: | Petrescu, A. M. R.1 roxana.petrescu@falw.vu.nl, van Huissteden, J.1, Jackowicz-Korczynski, M.2, Yurova, A.2, Christensen, T. R.2, Crill, P. M.3, Bäckstrand, K.3, Maximov, T. C.4 |
| Source: | Biogeosciences. 2008, Vol. 5 Issue 1, p111-121. 11p. 3 Charts, 9 Graphs, 2 Maps. |
| Subject Terms: | *Emissions (Air pollution), *Emissions trading, *Air pollution, *Wetlands, *Temperature, *Meteorological precipitation, *Earth sciences |
| Geographic Terms: | Arctic regions, Siberia (Russia) |
| Abstract: | This study compares the CH4 fluxes from two arctic wetland sites of different annual temperatures during 2004 to 2006. The PEATLAND-VU model was used to simulate the emissions. The CH4 module of PEATLAND-VU is based on the Walter-Heimann model. The first site is located in northeast Siberia, Indigirka lowlands, Kytalyk reserve (70° N, 147° E) in a continuous permafrost region with mean annual temperatures of -14.3°C. The other site is Stordalen mire in the eastern part of Lake Torneträsk (68° N, 19° E) ten kilometres east of Abisko, northern Sweden. It is located in a discontinuous permafrost region. Stordalen has a sub arctic climate with a mean annual temperature of -0.7°C. Model input consisted of observed temperature, precipitation and snow cover data. In all cases, modelled CH4 emissions show a direct correlation between variations in water table and soil temperature variations. The differences in CH4 emissions between the two sites are caused by different climate, hydrology, soil physical properties, vegetation type and NPP. For Kytalyk the simulated CH4 fluxes show similar trends during the growing season, having average values for 2004 to 2006 between 1.29-2.09 mgCH4 m-2 hr-1. At Stordalen the simulated fluxes show a slightly lower average value for the same years (3.52 mgCH4 m-2 hr-1) than the observed 4.7 mgCH4 m-2 hr-1. The effect of the longer growing season at Stordalen is simulated correctly. Our study shows that modelling of arctic CH4 fluxes is improved by adding a relatively simple hydrological model that simulates the water table position from generic weather data. Our results support the generalization in literature that CH4 fluxes in northern wetland are regulated more tightly by water table than temperature. Furthermore, parameter uncertainty at site level in wetland CH4 process models is an important factor in large scale modelling of CH4 fluxes. [ABSTRACT FROM AUTHOR] |
| Copyright of Biogeosciences is the property of Copernicus Gesellschaft mbH and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | GreenFILE |
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| Header | DbId: 8gh DbLabel: GreenFILE An: 29438531 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Modelling CH<subscript>4</subscript> emissions from arctic wetlands: effects of hydrological parameterization. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Petrescu%2C+A%2E+M%2E+R%2E%22">Petrescu, A. M. R.</searchLink><relatesTo>1</relatesTo><i> roxana.petrescu@falw.vu.nl</i><br /><searchLink fieldCode="AR" term="%22van+Huissteden%2C+J%2E%22">van Huissteden, J.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Jackowicz-Korczynski%2C+M%2E%22">Jackowicz-Korczynski, M.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Yurova%2C+A%2E%22">Yurova, A.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Christensen%2C+T%2E+R%2E%22">Christensen, T. R.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Crill%2C+P%2E+M%2E%22">Crill, P. M.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Bäckstrand%2C+K%2E%22">Bäckstrand, K.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Maximov%2C+T%2E+C%2E%22">Maximov, T. C.</searchLink><relatesTo>4</relatesTo> – Name: TitleSource Label: Source Group: Src Data: Biogeosciences. 2008, Vol. 5 Issue 1, p111-121. 11p. 3 Charts, 9 Graphs, 2 Maps. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Emissions+%28Air+pollution%29%22">Emissions (Air pollution)</searchLink><br />*<searchLink fieldCode="DE" term="%22Emissions+trading%22">Emissions trading</searchLink><br />*<searchLink fieldCode="DE" term="%22Air+pollution%22">Air pollution</searchLink><br />*<searchLink fieldCode="DE" term="%22Wetlands%22">Wetlands</searchLink><br />*<searchLink fieldCode="DE" term="%22Temperature%22">Temperature</searchLink><br />*<searchLink fieldCode="DE" term="%22Meteorological+precipitation%22">Meteorological precipitation</searchLink><br />*<searchLink fieldCode="DE" term="%22Earth+sciences%22">Earth sciences</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Arctic+regions%22">Arctic regions</searchLink><br /><searchLink fieldCode="DE" term="%22Siberia+%28Russia%29%22">Siberia (Russia)</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: This study compares the CH4 fluxes from two arctic wetland sites of different annual temperatures during 2004 to 2006. The PEATLAND-VU model was used to simulate the emissions. The CH4 module of PEATLAND-VU is based on the Walter-Heimann model. The first site is located in northeast Siberia, Indigirka lowlands, Kytalyk reserve (70° N, 147° E) in a continuous permafrost region with mean annual temperatures of -14.3°C. The other site is Stordalen mire in the eastern part of Lake Torneträsk (68° N, 19° E) ten kilometres east of Abisko, northern Sweden. It is located in a discontinuous permafrost region. Stordalen has a sub arctic climate with a mean annual temperature of -0.7°C. Model input consisted of observed temperature, precipitation and snow cover data. In all cases, modelled CH4 emissions show a direct correlation between variations in water table and soil temperature variations. The differences in CH4 emissions between the two sites are caused by different climate, hydrology, soil physical properties, vegetation type and NPP. For Kytalyk the simulated CH4 fluxes show similar trends during the growing season, having average values for 2004 to 2006 between 1.29-2.09 mgCH4 m-2 hr-1. At Stordalen the simulated fluxes show a slightly lower average value for the same years (3.52 mgCH4 m-2 hr-1) than the observed 4.7 mgCH4 m-2 hr-1. The effect of the longer growing season at Stordalen is simulated correctly. Our study shows that modelling of arctic CH4 fluxes is improved by adding a relatively simple hydrological model that simulates the water table position from generic weather data. Our results support the generalization in literature that CH4 fluxes in northern wetland are regulated more tightly by water table than temperature. Furthermore, parameter uncertainty at site level in wetland CH4 process models is an important factor in large scale modelling of CH4 fluxes. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Biogeosciences is the property of Copernicus Gesellschaft mbH and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.5194/bg-5-111-2008 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 11 StartPage: 111 Subjects: – SubjectFull: Emissions (Air pollution) Type: general – SubjectFull: Emissions trading Type: general – SubjectFull: Air pollution Type: general – SubjectFull: Wetlands Type: general – SubjectFull: Temperature Type: general – SubjectFull: Meteorological precipitation Type: general – SubjectFull: Earth sciences Type: general – SubjectFull: Arctic regions Type: general – SubjectFull: Siberia (Russia) Type: general Titles: – TitleFull: Modelling CH4 emissions from arctic wetlands: effects of hydrological parameterization. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Petrescu, A. M. R. – PersonEntity: Name: NameFull: van Huissteden, J. – PersonEntity: Name: NameFull: Jackowicz-Korczynski, M. – PersonEntity: Name: NameFull: Yurova, A. – PersonEntity: Name: NameFull: Christensen, T. R. – PersonEntity: Name: NameFull: Crill, P. M. – PersonEntity: Name: NameFull: Bäckstrand, K. – PersonEntity: Name: NameFull: Maximov, T. C. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 01 Text: 2008 Type: published Y: 2008 Identifiers: – Type: issn-print Value: 17264170 Numbering: – Type: volume Value: 5 – Type: issue Value: 1 Titles: – TitleFull: Biogeosciences Type: main |
| ResultId | 1 |
