A satellite data driven biophysical modeling approach for estimating northern peatland and tundra CO 2 and CH 4 fluxes
The northern terrestrial net ecosystem carbon balance (NECB) is contingent on inputs from vegetation gross primary productivity (GPP) to offset the ecosystem respiration (Reco) of carbon dioxide (CO2) and methane (CH4) emissions, but an effective framework to monitor the regional Arctic NECB is lack...
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ScholarWorks at University of Montana
2014
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Online Access: | https://scholarworks.umt.edu/biosci_pubs/393 https://scholarworks.umt.edu/context/biosci_pubs/article/1393/viewcontent/A_satellite_data_driven_biophysical_modeling_approach_for_estimating_northern_peatland_and_tundra_CO2_and_CH4_flukes.pdf https://scholarworks.umt.edu/context/biosci_pubs/article/1393/filename/0/type/additional/viewcontent/bg_11_1961_2014_supplement.pdf |
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ftunivmontana:oai:scholarworks.umt.edu:biosci_pubs-1393 2023-07-16T03:56:32+02:00 A satellite data driven biophysical modeling approach for estimating northern peatland and tundra CO 2 and CH 4 fluxes Watts, J. D. Kimball, John S Parmentier, F. J. W. Sachs, T. Rinne, J. Zona, D. Oechel, W. Tagesson, T. Jackowicz-Korczynski, M. Aurela, M. 2014-04-09T07:00:00Z application/pdf https://scholarworks.umt.edu/biosci_pubs/393 https://scholarworks.umt.edu/context/biosci_pubs/article/1393/viewcontent/A_satellite_data_driven_biophysical_modeling_approach_for_estimating_northern_peatland_and_tundra_CO2_and_CH4_flukes.pdf https://scholarworks.umt.edu/context/biosci_pubs/article/1393/filename/0/type/additional/viewcontent/bg_11_1961_2014_supplement.pdf unknown ScholarWorks at University of Montana https://scholarworks.umt.edu/biosci_pubs/393 https://scholarworks.umt.edu/context/biosci_pubs/article/1393/viewcontent/A_satellite_data_driven_biophysical_modeling_approach_for_estimating_northern_peatland_and_tundra_CO2_and_CH4_flukes.pdf https://scholarworks.umt.edu/context/biosci_pubs/article/1393/filename/0/type/additional/viewcontent/bg_11_1961_2014_supplement.pdf © Author(s) 2014 http://creativecommons.org/licenses/by/3.0/ Biological Sciences Faculty Publications LENA RIVER DELTA TIME-SERIES DATA LIGHT-USE-EFFICIENCY METHANE EMISSIONS ARCTIC TUNDRA CARBON-DIOXIDE BIOGEOCHEMISTRY MODEL ECOSYSTEM CARBON VASCULAR PLANTS CLIMATE-CHANGE Biology Earth Sciences Geology Life Sciences text 2014 ftunivmontana 2023-06-27T22:10:57Z The northern terrestrial net ecosystem carbon balance (NECB) is contingent on inputs from vegetation gross primary productivity (GPP) to offset the ecosystem respiration (Reco) of carbon dioxide (CO2) and methane (CH4) emissions, but an effective framework to monitor the regional Arctic NECB is lacking. We modified a terrestrial carbon flux (TCF) model developed for satellite remote sensing applications to evaluate wetland CO2 and CH4 fluxes over pan-Arctic eddy covariance (EC) flux tower sites. The TCF model estimates GPP, CO2 and CH4 emissions using in situ or remote sensing and reanalysis-based climate data as inputs. The TCF model simulations using in situ data explained >70% of the r2 variability in the 8 day cumulative EC measured fluxes. Model simulations using coarser satellite (MODIS) and reanalysis (MERRA) records accounted for approximately 69% and 75% of the respective r2 variability in the tower CO2 and CH4 records, with corresponding RWSE uncertainties of 1.3 gCM-2 d-1 (CO2) and 18.2 mg Cm-2 d-1 (CH4). Although the estimated annual CH4 emissions were small (gCm-2 yr-1) relative to Reco (>180 gCm-2 yr-1), they reduced the across-site NECB by 23%and contributed to a global warming potential of approximately 165±128 gCO2eqm−2 yr−1 when considered over a 100 year time span. This model evaluation indicates a strong potential for using the TCF model approach to document landscape-scale variability in CO2 and CH4 fluxes, and to estimate the NECB for northern peatland and tundra ecosystems. Text Arctic Climate change Global warming lena river Tundra University of Montana: ScholarWorks Arctic Merra ENVELOPE(12.615,12.615,65.816,65.816) |
institution |
Open Polar |
collection |
University of Montana: ScholarWorks |
op_collection_id |
ftunivmontana |
language |
unknown |
topic |
LENA RIVER DELTA TIME-SERIES DATA LIGHT-USE-EFFICIENCY METHANE EMISSIONS ARCTIC TUNDRA CARBON-DIOXIDE BIOGEOCHEMISTRY MODEL ECOSYSTEM CARBON VASCULAR PLANTS CLIMATE-CHANGE Biology Earth Sciences Geology Life Sciences |
spellingShingle |
LENA RIVER DELTA TIME-SERIES DATA LIGHT-USE-EFFICIENCY METHANE EMISSIONS ARCTIC TUNDRA CARBON-DIOXIDE BIOGEOCHEMISTRY MODEL ECOSYSTEM CARBON VASCULAR PLANTS CLIMATE-CHANGE Biology Earth Sciences Geology Life Sciences Watts, J. D. Kimball, John S Parmentier, F. J. W. Sachs, T. Rinne, J. Zona, D. Oechel, W. Tagesson, T. Jackowicz-Korczynski, M. Aurela, M. A satellite data driven biophysical modeling approach for estimating northern peatland and tundra CO 2 and CH 4 fluxes |
topic_facet |
LENA RIVER DELTA TIME-SERIES DATA LIGHT-USE-EFFICIENCY METHANE EMISSIONS ARCTIC TUNDRA CARBON-DIOXIDE BIOGEOCHEMISTRY MODEL ECOSYSTEM CARBON VASCULAR PLANTS CLIMATE-CHANGE Biology Earth Sciences Geology Life Sciences |
description |
The northern terrestrial net ecosystem carbon balance (NECB) is contingent on inputs from vegetation gross primary productivity (GPP) to offset the ecosystem respiration (Reco) of carbon dioxide (CO2) and methane (CH4) emissions, but an effective framework to monitor the regional Arctic NECB is lacking. We modified a terrestrial carbon flux (TCF) model developed for satellite remote sensing applications to evaluate wetland CO2 and CH4 fluxes over pan-Arctic eddy covariance (EC) flux tower sites. The TCF model estimates GPP, CO2 and CH4 emissions using in situ or remote sensing and reanalysis-based climate data as inputs. The TCF model simulations using in situ data explained >70% of the r2 variability in the 8 day cumulative EC measured fluxes. Model simulations using coarser satellite (MODIS) and reanalysis (MERRA) records accounted for approximately 69% and 75% of the respective r2 variability in the tower CO2 and CH4 records, with corresponding RWSE uncertainties of 1.3 gCM-2 d-1 (CO2) and 18.2 mg Cm-2 d-1 (CH4). Although the estimated annual CH4 emissions were small (gCm-2 yr-1) relative to Reco (>180 gCm-2 yr-1), they reduced the across-site NECB by 23%and contributed to a global warming potential of approximately 165±128 gCO2eqm−2 yr−1 when considered over a 100 year time span. This model evaluation indicates a strong potential for using the TCF model approach to document landscape-scale variability in CO2 and CH4 fluxes, and to estimate the NECB for northern peatland and tundra ecosystems. |
format |
Text |
author |
Watts, J. D. Kimball, John S Parmentier, F. J. W. Sachs, T. Rinne, J. Zona, D. Oechel, W. Tagesson, T. Jackowicz-Korczynski, M. Aurela, M. |
author_facet |
Watts, J. D. Kimball, John S Parmentier, F. J. W. Sachs, T. Rinne, J. Zona, D. Oechel, W. Tagesson, T. Jackowicz-Korczynski, M. Aurela, M. |
author_sort |
Watts, J. D. |
title |
A satellite data driven biophysical modeling approach for estimating northern peatland and tundra CO 2 and CH 4 fluxes |
title_short |
A satellite data driven biophysical modeling approach for estimating northern peatland and tundra CO 2 and CH 4 fluxes |
title_full |
A satellite data driven biophysical modeling approach for estimating northern peatland and tundra CO 2 and CH 4 fluxes |
title_fullStr |
A satellite data driven biophysical modeling approach for estimating northern peatland and tundra CO 2 and CH 4 fluxes |
title_full_unstemmed |
A satellite data driven biophysical modeling approach for estimating northern peatland and tundra CO 2 and CH 4 fluxes |
title_sort |
satellite data driven biophysical modeling approach for estimating northern peatland and tundra co 2 and ch 4 fluxes |
publisher |
ScholarWorks at University of Montana |
publishDate |
2014 |
url |
https://scholarworks.umt.edu/biosci_pubs/393 https://scholarworks.umt.edu/context/biosci_pubs/article/1393/viewcontent/A_satellite_data_driven_biophysical_modeling_approach_for_estimating_northern_peatland_and_tundra_CO2_and_CH4_flukes.pdf https://scholarworks.umt.edu/context/biosci_pubs/article/1393/filename/0/type/additional/viewcontent/bg_11_1961_2014_supplement.pdf |
long_lat |
ENVELOPE(12.615,12.615,65.816,65.816) |
geographic |
Arctic Merra |
geographic_facet |
Arctic Merra |
genre |
Arctic Climate change Global warming lena river Tundra |
genre_facet |
Arctic Climate change Global warming lena river Tundra |
op_source |
Biological Sciences Faculty Publications |
op_relation |
https://scholarworks.umt.edu/biosci_pubs/393 https://scholarworks.umt.edu/context/biosci_pubs/article/1393/viewcontent/A_satellite_data_driven_biophysical_modeling_approach_for_estimating_northern_peatland_and_tundra_CO2_and_CH4_flukes.pdf https://scholarworks.umt.edu/context/biosci_pubs/article/1393/filename/0/type/additional/viewcontent/bg_11_1961_2014_supplement.pdf |
op_rights |
© Author(s) 2014 http://creativecommons.org/licenses/by/3.0/ |
_version_ |
1771542926404354048 |