Calibration of a land-surface model using data from primary forest sites in Amazonia
Summary A land-surface model (MOSES) was tested against observed fluxes of heat, water vapour and carbon dioxide for two primary forest sites near Manaus, Brazil. Flux data from one site (called C14) were used to calibrate the model, and data from the other site (called K34) were used to validate th...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Harris, P. P. [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2004 |
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| Systematik: |
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| Anmerkung: |
© Springer-Verlag/Wien 2004 |
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| Übergeordnetes Werk: |
Enthalten in: Theoretical and applied climatology - Springer-Verlag, 1986, 78(2004), 1-3 vom: 28. Apr., Seite 27-45 |
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| Übergeordnetes Werk: |
volume:78 ; year:2004 ; number:1-3 ; day:28 ; month:04 ; pages:27-45 |
| Links: |
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| DOI / URN: |
10.1007/s00704-004-0042-y |
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| Katalog-ID: |
OLC2048438784 |
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| 245 | 1 | 0 | |a Calibration of a land-surface model using data from primary forest sites in Amazonia |
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| 520 | |a Summary A land-surface model (MOSES) was tested against observed fluxes of heat, water vapour and carbon dioxide for two primary forest sites near Manaus, Brazil. Flux data from one site (called C14) were used to calibrate the model, and data from the other site (called K34) were used to validate the calibrated model. Long-term fluxes of water vapour at C14 and K34 simulated by the uncalibrated model were good, whereas modelled net ecosystem exchange (NEE) was poor. The uncalibrated model persistently underpredicted canopy conductance (gc) from mid-morning to mid-afternoon due to saturation of the response to solar radiation at low light levels. This in turn caused a poor simulation of the diurnal cycles of water vapour and carbon fluxes. Calibration of the stomatal conductance/photosynthesis sub-model of MOSES improved the simulated diurnal cycle of gc and increased the diurnal maximum NEE, but at the expense of degrading long-term water vapour fluxes. Seasonality in observed canopy conductance due to soil moisture change was not captured by the model. Introducing realistic depth-dependent soil parameters decreased the amount of moisture available for transpiration at each depth and led to the model experiencing soil moisture limitation on canopy conductance during the dry season. However, this limitation had only a limited effect on the seasonality in modelled NEE. | ||
| 650 | 4 | |a Water Vapour | |
| 650 | 4 | |a Diurnal Cycle | |
| 650 | 4 | |a Vapour Flux | |
| 650 | 4 | |a Water Vapour Flux | |
| 650 | 4 | |a Canopy Conductance | |
| 700 | 1 | |a Huntingford, C. |4 aut | |
| 700 | 1 | |a Gash, J. H. C. |4 aut | |
| 700 | 1 | |a Hodnett, M. G. |4 aut | |
| 700 | 1 | |a Cox, P. M. |4 aut | |
| 700 | 1 | |a Malhi, Y. |4 aut | |
| 700 | 1 | |a Araújo, A. C. |4 aut | |
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10.1007/s00704-004-0042-y doi (DE-627)OLC2048438784 (DE-He213)s00704-004-0042-y-p DE-627 ger DE-627 rakwb eng 550 VZ 14 ssgn RA 1000 VZ rvk Harris, P. P. verfasserin aut Calibration of a land-surface model using data from primary forest sites in Amazonia 2004 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag/Wien 2004 Summary A land-surface model (MOSES) was tested against observed fluxes of heat, water vapour and carbon dioxide for two primary forest sites near Manaus, Brazil. Flux data from one site (called C14) were used to calibrate the model, and data from the other site (called K34) were used to validate the calibrated model. Long-term fluxes of water vapour at C14 and K34 simulated by the uncalibrated model were good, whereas modelled net ecosystem exchange (NEE) was poor. The uncalibrated model persistently underpredicted canopy conductance (gc) from mid-morning to mid-afternoon due to saturation of the response to solar radiation at low light levels. This in turn caused a poor simulation of the diurnal cycles of water vapour and carbon fluxes. Calibration of the stomatal conductance/photosynthesis sub-model of MOSES improved the simulated diurnal cycle of gc and increased the diurnal maximum NEE, but at the expense of degrading long-term water vapour fluxes. Seasonality in observed canopy conductance due to soil moisture change was not captured by the model. Introducing realistic depth-dependent soil parameters decreased the amount of moisture available for transpiration at each depth and led to the model experiencing soil moisture limitation on canopy conductance during the dry season. However, this limitation had only a limited effect on the seasonality in modelled NEE. Water Vapour Diurnal Cycle Vapour Flux Water Vapour Flux Canopy Conductance Huntingford, C. aut Gash, J. H. C. aut Hodnett, M. G. aut Cox, P. M. aut Malhi, Y. aut Araújo, A. C. aut Enthalten in Theoretical and applied climatology Springer-Verlag, 1986 78(2004), 1-3 vom: 28. Apr., Seite 27-45 (DE-627)129958808 (DE-600)405799-5 (DE-576)01552857X 0177-798X nnns volume:78 year:2004 number:1-3 day:28 month:04 pages:27-45 https://doi.org/10.1007/s00704-004-0042-y lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_11 GBV_ILN_40 GBV_ILN_70 GBV_ILN_381 GBV_ILN_2003 GBV_ILN_2006 GBV_ILN_2010 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4029 GBV_ILN_4306 GBV_ILN_4311 GBV_ILN_4313 GBV_ILN_4323 RA 1000 AR 78 2004 1-3 28 04 27-45 |
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10.1007/s00704-004-0042-y doi (DE-627)OLC2048438784 (DE-He213)s00704-004-0042-y-p DE-627 ger DE-627 rakwb eng 550 VZ 14 ssgn RA 1000 VZ rvk Harris, P. P. verfasserin aut Calibration of a land-surface model using data from primary forest sites in Amazonia 2004 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag/Wien 2004 Summary A land-surface model (MOSES) was tested against observed fluxes of heat, water vapour and carbon dioxide for two primary forest sites near Manaus, Brazil. Flux data from one site (called C14) were used to calibrate the model, and data from the other site (called K34) were used to validate the calibrated model. Long-term fluxes of water vapour at C14 and K34 simulated by the uncalibrated model were good, whereas modelled net ecosystem exchange (NEE) was poor. The uncalibrated model persistently underpredicted canopy conductance (gc) from mid-morning to mid-afternoon due to saturation of the response to solar radiation at low light levels. This in turn caused a poor simulation of the diurnal cycles of water vapour and carbon fluxes. Calibration of the stomatal conductance/photosynthesis sub-model of MOSES improved the simulated diurnal cycle of gc and increased the diurnal maximum NEE, but at the expense of degrading long-term water vapour fluxes. Seasonality in observed canopy conductance due to soil moisture change was not captured by the model. Introducing realistic depth-dependent soil parameters decreased the amount of moisture available for transpiration at each depth and led to the model experiencing soil moisture limitation on canopy conductance during the dry season. However, this limitation had only a limited effect on the seasonality in modelled NEE. Water Vapour Diurnal Cycle Vapour Flux Water Vapour Flux Canopy Conductance Huntingford, C. aut Gash, J. H. C. aut Hodnett, M. G. aut Cox, P. M. aut Malhi, Y. aut Araújo, A. C. aut Enthalten in Theoretical and applied climatology Springer-Verlag, 1986 78(2004), 1-3 vom: 28. Apr., Seite 27-45 (DE-627)129958808 (DE-600)405799-5 (DE-576)01552857X 0177-798X nnns volume:78 year:2004 number:1-3 day:28 month:04 pages:27-45 https://doi.org/10.1007/s00704-004-0042-y lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_11 GBV_ILN_40 GBV_ILN_70 GBV_ILN_381 GBV_ILN_2003 GBV_ILN_2006 GBV_ILN_2010 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4029 GBV_ILN_4306 GBV_ILN_4311 GBV_ILN_4313 GBV_ILN_4323 RA 1000 AR 78 2004 1-3 28 04 27-45 |
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10.1007/s00704-004-0042-y doi (DE-627)OLC2048438784 (DE-He213)s00704-004-0042-y-p DE-627 ger DE-627 rakwb eng 550 VZ 14 ssgn RA 1000 VZ rvk Harris, P. P. verfasserin aut Calibration of a land-surface model using data from primary forest sites in Amazonia 2004 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag/Wien 2004 Summary A land-surface model (MOSES) was tested against observed fluxes of heat, water vapour and carbon dioxide for two primary forest sites near Manaus, Brazil. Flux data from one site (called C14) were used to calibrate the model, and data from the other site (called K34) were used to validate the calibrated model. Long-term fluxes of water vapour at C14 and K34 simulated by the uncalibrated model were good, whereas modelled net ecosystem exchange (NEE) was poor. The uncalibrated model persistently underpredicted canopy conductance (gc) from mid-morning to mid-afternoon due to saturation of the response to solar radiation at low light levels. This in turn caused a poor simulation of the diurnal cycles of water vapour and carbon fluxes. Calibration of the stomatal conductance/photosynthesis sub-model of MOSES improved the simulated diurnal cycle of gc and increased the diurnal maximum NEE, but at the expense of degrading long-term water vapour fluxes. Seasonality in observed canopy conductance due to soil moisture change was not captured by the model. Introducing realistic depth-dependent soil parameters decreased the amount of moisture available for transpiration at each depth and led to the model experiencing soil moisture limitation on canopy conductance during the dry season. However, this limitation had only a limited effect on the seasonality in modelled NEE. Water Vapour Diurnal Cycle Vapour Flux Water Vapour Flux Canopy Conductance Huntingford, C. aut Gash, J. H. C. aut Hodnett, M. G. aut Cox, P. M. aut Malhi, Y. aut Araújo, A. C. aut Enthalten in Theoretical and applied climatology Springer-Verlag, 1986 78(2004), 1-3 vom: 28. Apr., Seite 27-45 (DE-627)129958808 (DE-600)405799-5 (DE-576)01552857X 0177-798X nnns volume:78 year:2004 number:1-3 day:28 month:04 pages:27-45 https://doi.org/10.1007/s00704-004-0042-y lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_11 GBV_ILN_40 GBV_ILN_70 GBV_ILN_381 GBV_ILN_2003 GBV_ILN_2006 GBV_ILN_2010 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4029 GBV_ILN_4306 GBV_ILN_4311 GBV_ILN_4313 GBV_ILN_4323 RA 1000 AR 78 2004 1-3 28 04 27-45 |
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calibration of a land-surface model using data from primary forest sites in amazonia |
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Calibration of a land-surface model using data from primary forest sites in Amazonia |
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Summary A land-surface model (MOSES) was tested against observed fluxes of heat, water vapour and carbon dioxide for two primary forest sites near Manaus, Brazil. Flux data from one site (called C14) were used to calibrate the model, and data from the other site (called K34) were used to validate the calibrated model. Long-term fluxes of water vapour at C14 and K34 simulated by the uncalibrated model were good, whereas modelled net ecosystem exchange (NEE) was poor. The uncalibrated model persistently underpredicted canopy conductance (gc) from mid-morning to mid-afternoon due to saturation of the response to solar radiation at low light levels. This in turn caused a poor simulation of the diurnal cycles of water vapour and carbon fluxes. Calibration of the stomatal conductance/photosynthesis sub-model of MOSES improved the simulated diurnal cycle of gc and increased the diurnal maximum NEE, but at the expense of degrading long-term water vapour fluxes. Seasonality in observed canopy conductance due to soil moisture change was not captured by the model. Introducing realistic depth-dependent soil parameters decreased the amount of moisture available for transpiration at each depth and led to the model experiencing soil moisture limitation on canopy conductance during the dry season. However, this limitation had only a limited effect on the seasonality in modelled NEE. © Springer-Verlag/Wien 2004 |
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Summary A land-surface model (MOSES) was tested against observed fluxes of heat, water vapour and carbon dioxide for two primary forest sites near Manaus, Brazil. Flux data from one site (called C14) were used to calibrate the model, and data from the other site (called K34) were used to validate the calibrated model. Long-term fluxes of water vapour at C14 and K34 simulated by the uncalibrated model were good, whereas modelled net ecosystem exchange (NEE) was poor. The uncalibrated model persistently underpredicted canopy conductance (gc) from mid-morning to mid-afternoon due to saturation of the response to solar radiation at low light levels. This in turn caused a poor simulation of the diurnal cycles of water vapour and carbon fluxes. Calibration of the stomatal conductance/photosynthesis sub-model of MOSES improved the simulated diurnal cycle of gc and increased the diurnal maximum NEE, but at the expense of degrading long-term water vapour fluxes. Seasonality in observed canopy conductance due to soil moisture change was not captured by the model. Introducing realistic depth-dependent soil parameters decreased the amount of moisture available for transpiration at each depth and led to the model experiencing soil moisture limitation on canopy conductance during the dry season. However, this limitation had only a limited effect on the seasonality in modelled NEE. © Springer-Verlag/Wien 2004 |
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Summary A land-surface model (MOSES) was tested against observed fluxes of heat, water vapour and carbon dioxide for two primary forest sites near Manaus, Brazil. Flux data from one site (called C14) were used to calibrate the model, and data from the other site (called K34) were used to validate the calibrated model. Long-term fluxes of water vapour at C14 and K34 simulated by the uncalibrated model were good, whereas modelled net ecosystem exchange (NEE) was poor. The uncalibrated model persistently underpredicted canopy conductance (gc) from mid-morning to mid-afternoon due to saturation of the response to solar radiation at low light levels. This in turn caused a poor simulation of the diurnal cycles of water vapour and carbon fluxes. Calibration of the stomatal conductance/photosynthesis sub-model of MOSES improved the simulated diurnal cycle of gc and increased the diurnal maximum NEE, but at the expense of degrading long-term water vapour fluxes. Seasonality in observed canopy conductance due to soil moisture change was not captured by the model. Introducing realistic depth-dependent soil parameters decreased the amount of moisture available for transpiration at each depth and led to the model experiencing soil moisture limitation on canopy conductance during the dry season. However, this limitation had only a limited effect on the seasonality in modelled NEE. © Springer-Verlag/Wien 2004 |
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