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Methane budget esti...
Methane budget estimates in Finland from the CarbonTracker Europe-CH4 data assimilation system
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- Tsuruta, Aki (author)
- Finnish Meteorological Institute
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- Aalto, Tuula (author)
- Finnish Meteorological Institute
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- Backman, Leif (author)
- Finnish Meteorological Institute
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- Krol, Maarten C. (author)
- National Instiute for Space Research,Wageningen University,Utrecht University
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- Peters, Wouter (author)
- Wageningen University,University of Groningen
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- Lienert, Sebastian (author)
- University of Bern
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- Joos, Fortunat (author)
- University of Bern
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- Miller, Paul A. (author)
- Lund University,Lunds universitet,BECC: Biodiversity and Ecosystem services in a Changing Climate,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,MERGE: ModElling the Regional and Global Earth system,Institutionen för naturgeografi och ekosystemvetenskap,Centre for Environmental and Climate Science (CEC),Faculty of Science,Dept of Physical Geography and Ecosystem Science
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- Zhang, Wenxin (author)
- University of Copenhagen
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- Laurila, Tuomas (author)
- Finnish Meteorological Institute
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- Hatakka, Juha (author)
- Finnish Meteorological Institute
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- Leskinen, Ari (author)
- Finnish Meteorological Institute,University of Eastern Finland
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- Lehtinen, Kari E.J. (author)
- Finnish Meteorological Institute,University of Eastern Finland
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- Peltola, Olli (author)
- Finnish Meteorological Institute
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- Vesala, Timo (author)
- University of Helsinki
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- Levula, Janne (author)
- University of Helsinki
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- Dlugokencky, Ed (author)
- National Oceanic and Atmospheric Administration (NOAA)
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- Heimann, Martin (author)
- Max Planck Institute for Biogeochemistry,University of Helsinki
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- Kozlova, Elena (author)
- University of Exeter
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- Aurela, Mika (author)
- Finnish Meteorological Institute
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- Lohila, Annalea (author)
- Finnish Meteorological Institute
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- Kauhaniemi, Mari (author)
- Finnish Meteorological Institute
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- Gomez-Pelaez, Angel J. (author)
- Agencia Estatal de Meteorologia
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(creator_code:org_t)
- 2019-01-01
- 2019
- English.
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In: Tellus. Series B: Chemical and Physical Meteorology. - : Stockholm University Press. - 1600-0889 .- 0280-6509. ; 71:1
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http://dx.doi.org/10... (free)
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https://www.tandfonl...
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https://doi.org/10.1...
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Abstract
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- We estimated the CH4 budget in Finland for 2004–2014 using the CTE-CH4 data assimilation system with an extended atmospheric CH4 observation network of seven sites from Finland to surrounding regions (Hyytiälä, Kjølnes, Kumpula, Pallas, Puijo, Sodankylä, and Utö). The estimated average annual total emission for Finland is 0.6 ± 0.5 Tg CH4 yr−1. Sensitivity experiments show that the posterior biospheric emission estimates for Finland are between 0.3 and 0.9 Tg CH4 yr−1, which lies between the LPX-Bern-DYPTOP (0.2 Tg CH4 yr−1) and LPJG-WHyMe (2.2 Tg CH4 yr−1) process-based model estimates. For anthropogenic emissions, we found that the EDGAR v4.2 FT2010 inventory (0.4 Tg CH4 yr−1) is likely to overestimate emissions in southernmost Finland, but the extent of overestimation and possible relocation of emissions are difficult to derive from the current observation network. The posterior emission estimates were especially reliant on prior information in central Finland. However, based on analysis of posterior atmospheric CH4, we found that the anthropogenic emission distribution based on a national inventory is more reliable than the one based on EDGAR v4.2 FT2010. The contribution of total emissions in Finland to global total emissions is only about 0.13%, and the derived total emissions in Finland showed no trend during 2004–2014. The model using optimized emissions was able to reproduce observed atmospheric CH4 at the sites in Finland and surrounding regions fairly well (correlation > 0.75, bias < ± ppb), supporting adequacy of the observations to be used in atmospheric inversion studies. In addition to global budget estimates, we found that CTE-CH4 is also applicable for regional budget estimates, where small scale (1x1 in this case) optimization is possible with a dense observation network.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Meteorologi och atmosfärforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Meteorology and Atmospheric Sciences (hsv//eng)
Keyword
- atmospheric CH
- CH flux
- data assimilation
- Finland
- flux estimation
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Tsuruta, Aki
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Aalto, Tuula
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Backman, Leif
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Krol, Maarten C.
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Peters, Wouter
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Lienert, Sebasti ...
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show more...
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Joos, Fortunat
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Miller, Paul A.
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Zhang, Wenxin
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Laurila, Tuomas
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Hatakka, Juha
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Leskinen, Ari
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Lehtinen, Kari E ...
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Peltola, Olli
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Vesala, Timo
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Levula, Janne
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Dlugokencky, Ed
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Heimann, Martin
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Kozlova, Elena
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Aurela, Mika
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Lohila, Annalea
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Kauhaniemi, Mari
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Gomez-Pelaez, An ...
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Climate Research
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Meteorology and ...
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Tellus. Series B ...
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Lund University