Evaluating atmospheric methane inversion model results for Pallas, northern Finland
A state-of-the-art inverse model, CarbonTracker Data Assimilation Shell (CTDAS), was used to optimize estimates of methane (CH4) surface fluxes using atmospheric observations of CH4 as a constraint. The model consists of the latest version of the TM5 atmospheric chemistry-transport model and an ense...
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ftunivbern:oai:boris.unibe.ch:73421 2023-08-20T04:05:40+02:00 Evaluating atmospheric methane inversion model results for Pallas, northern Finland Tsuruta, Aki Aalto, Tuula Backman, Leif Peters, Wouter Krol, Maarten van der Laan-Luijkx, Ingrid T. Hatakka, Juha Heikkinen, Pauli Dlugokencky, Edward J. Spahni, Renato Paramonova, Nina N. 2015 application/pdf https://boris.unibe.ch/73421/1/ber20-506.pdf https://boris.unibe.ch/73421/ http://www.borenv.net/ eng eng Boreal Environment Research Publishing Board https://boris.unibe.ch/73421/ info:eu-repo/semantics/openAccess Tsuruta, Aki; Aalto, Tuula; Backman, Leif; Peters, Wouter; Krol, Maarten; van der Laan-Luijkx, Ingrid T.; Hatakka, Juha; Heikkinen, Pauli; Dlugokencky, Edward J.; Spahni, Renato; Paramonova, Nina N. (2015). Evaluating atmospheric methane inversion model results for Pallas, northern Finland. Boreal Environment Research, 20(4), pp. 506-525. Boreal Environment Research Publishing Board 530 Physics info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2015 ftunivbern 2023-07-31T21:21:00Z A state-of-the-art inverse model, CarbonTracker Data Assimilation Shell (CTDAS), was used to optimize estimates of methane (CH4) surface fluxes using atmospheric observations of CH4 as a constraint. The model consists of the latest version of the TM5 atmospheric chemistry-transport model and an ensemble Kalman filter based data assimilation system. The model was constrained by atmospheric methane surface concentrations, obtained from the World Data Centre for Greenhouse Gases (WDCGG). Prior methane emissions were specified for five sources: biosphere, anthropogenic, fire, termites and ocean, of which bio-sphere and anthropogenic emissions were optimized. Atmospheric CH 4 mole fractions for 2007 from northern Finland calculated from prior and optimized emissions were compared with observations. It was found that the root mean squared errors of the posterior esti - mates were more than halved. Furthermore, inclusion of NOAA observations of CH 4 from weekly discrete air samples collected at Pallas improved agreement between posterior CH 4 mole fraction estimates and continuous observations, and resulted in reducing optimized biosphere emissions and their uncertainties in northern Finland. Article in Journal/Newspaper Boreal Environment Research Northern Finland BORIS (Bern Open Repository and Information System, University of Bern) |
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BORIS (Bern Open Repository and Information System, University of Bern) |
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ftunivbern |
language |
English |
topic |
530 Physics |
spellingShingle |
530 Physics Tsuruta, Aki Aalto, Tuula Backman, Leif Peters, Wouter Krol, Maarten van der Laan-Luijkx, Ingrid T. Hatakka, Juha Heikkinen, Pauli Dlugokencky, Edward J. Spahni, Renato Paramonova, Nina N. Evaluating atmospheric methane inversion model results for Pallas, northern Finland |
topic_facet |
530 Physics |
description |
A state-of-the-art inverse model, CarbonTracker Data Assimilation Shell (CTDAS), was used to optimize estimates of methane (CH4) surface fluxes using atmospheric observations of CH4 as a constraint. The model consists of the latest version of the TM5 atmospheric chemistry-transport model and an ensemble Kalman filter based data assimilation system. The model was constrained by atmospheric methane surface concentrations, obtained from the World Data Centre for Greenhouse Gases (WDCGG). Prior methane emissions were specified for five sources: biosphere, anthropogenic, fire, termites and ocean, of which bio-sphere and anthropogenic emissions were optimized. Atmospheric CH 4 mole fractions for 2007 from northern Finland calculated from prior and optimized emissions were compared with observations. It was found that the root mean squared errors of the posterior esti - mates were more than halved. Furthermore, inclusion of NOAA observations of CH 4 from weekly discrete air samples collected at Pallas improved agreement between posterior CH 4 mole fraction estimates and continuous observations, and resulted in reducing optimized biosphere emissions and their uncertainties in northern Finland. |
format |
Article in Journal/Newspaper |
author |
Tsuruta, Aki Aalto, Tuula Backman, Leif Peters, Wouter Krol, Maarten van der Laan-Luijkx, Ingrid T. Hatakka, Juha Heikkinen, Pauli Dlugokencky, Edward J. Spahni, Renato Paramonova, Nina N. |
author_facet |
Tsuruta, Aki Aalto, Tuula Backman, Leif Peters, Wouter Krol, Maarten van der Laan-Luijkx, Ingrid T. Hatakka, Juha Heikkinen, Pauli Dlugokencky, Edward J. Spahni, Renato Paramonova, Nina N. |
author_sort |
Tsuruta, Aki |
title |
Evaluating atmospheric methane inversion model results for Pallas, northern Finland |
title_short |
Evaluating atmospheric methane inversion model results for Pallas, northern Finland |
title_full |
Evaluating atmospheric methane inversion model results for Pallas, northern Finland |
title_fullStr |
Evaluating atmospheric methane inversion model results for Pallas, northern Finland |
title_full_unstemmed |
Evaluating atmospheric methane inversion model results for Pallas, northern Finland |
title_sort |
evaluating atmospheric methane inversion model results for pallas, northern finland |
publisher |
Boreal Environment Research Publishing Board |
publishDate |
2015 |
url |
https://boris.unibe.ch/73421/1/ber20-506.pdf https://boris.unibe.ch/73421/ http://www.borenv.net/ |
genre |
Boreal Environment Research Northern Finland |
genre_facet |
Boreal Environment Research Northern Finland |
op_source |
Tsuruta, Aki; Aalto, Tuula; Backman, Leif; Peters, Wouter; Krol, Maarten; van der Laan-Luijkx, Ingrid T.; Hatakka, Juha; Heikkinen, Pauli; Dlugokencky, Edward J.; Spahni, Renato; Paramonova, Nina N. (2015). Evaluating atmospheric methane inversion model results for Pallas, northern Finland. Boreal Environment Research, 20(4), pp. 506-525. Boreal Environment Research Publishing Board |
op_relation |
https://boris.unibe.ch/73421/ |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1774716322613035008 |