Assessing methane emissions for northern peatlands in ORCHIDEE-PEAT revision 7020
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F22%3A00557544" target="_blank" >RIV/86652079:_____/22:00557544 - isvavai.cz</a>
Result on the web
<a href="https://gmd.copernicus.org/articles/15/2813/2022/" target="_blank" >https://gmd.copernicus.org/articles/15/2813/2022/</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.5194/gmd-15-2813-2022" target="_blank" >10.5194/gmd-15-2813-2022</a>
Alternative languages
Result language
angličtina
Original language name
Assessing methane emissions for northern peatlands in ORCHIDEE-PEAT revision 7020
Original language description
In the global methane budget, the largest natural source is attributed to wetlands, which encompass all ecosystems composed of waterlogged or inundated ground, capable of methane production. Among them, northern peatlands that store large amounts of soil organic carbon have been functioning, since the end of the last glaciation period, as long-term sources of methane (CH4) and are one of the most significant methane sources among wetlands. To reduce uncertainty of quantifying methane flux in the global methane budget, it is of significance to understand the underlying processes for methane production and fluxes in northern peatlands. A methane model that features methane production and transport by plants, ebullition process and diffusion in soil, oxidation to CO2, and CH4 fluxes to the atmosphere has been embedded in the ORCHIDEE-PEAT land surface model that includes an explicit representation of northern peatlands. ORCHIDEE-PCH4 was calibrated and evaluated on 14 peatland sites distributed on both the Eurasian and American continents in the northern boreal and temperate regions. Data assimilation approaches were employed to optimized parameters at each site and at all sites simultaneously. Results show that methanogenesis is sensitive to temperature and substrate availability over the top 75 cm of soil depth. Methane emissions estimated using single site optimization (SSO) of model parameters are underestimated by 9 g CH4 m(-2) yr(-1) on average (i.e., 50 % higher than the site average of yearly methane emissions). While using the multi-site optimization (MSO), methane emissions are overestimated by 5 g CH4 m(-2) yr(-1) on average across all investigated sites (i.e., 37 % lower than the site average of yearly methane emissions).
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10509 - Meteorology and atmospheric sciences
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Geoscientific Model Development
ISSN
1991-959X
e-ISSN
1991-9603
Volume of the periodical
15
Issue of the periodical within the volume
7
Country of publishing house
DE - GERMANY
Number of pages
25
Pages from-to
2813-2838
UT code for WoS article
000792361900001
EID of the result in the Scopus database
2-s2.0-85128289943