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Toward a statistical description of methane emissions from arctic wetlands

Pirk, Norbert LU ; Mastepanov, Mikhail LU ; López-Blanco, Efrén; Christensen, Louise H.; Christiansen, Hanne; Hansen, Birger Ulf; Lund, Magnus LU ; Parmentier, Frans Jan W LU ; Skov, Kirstine and Christensen, Torben R. LU (2017) In Ambio 46. p.70-80
Abstract

Methane (CH4) emissions from arctic tundra typically follow relations with soil temperature and water table depth, but these process-based descriptions can be difficult to apply to areas where no measurements exist. We formulated a description of the broader temporal flux pattern in the growing season based on two distinct CH4 source components from slow and fast-turnover carbon. We used automatic closed chamber flux measurements from NE Greenland (74°N), W Greenland (64°N), and Svalbard (78°N) to identify and discuss these components. The temporal separation was well-suited in NE Greenland, where the hypothesized slow-turnover carbon peaked at a time significantly related to the timing of snowmelt. The temporally... (More)

Methane (CH4) emissions from arctic tundra typically follow relations with soil temperature and water table depth, but these process-based descriptions can be difficult to apply to areas where no measurements exist. We formulated a description of the broader temporal flux pattern in the growing season based on two distinct CH4 source components from slow and fast-turnover carbon. We used automatic closed chamber flux measurements from NE Greenland (74°N), W Greenland (64°N), and Svalbard (78°N) to identify and discuss these components. The temporal separation was well-suited in NE Greenland, where the hypothesized slow-turnover carbon peaked at a time significantly related to the timing of snowmelt. The temporally wider component from fast-turnover carbon dominated the emissions in W Greenland and Svalbard. Altogether, we found no dependence of the total seasonal CH4 budget to the timing of snowmelt, and warmer sites and years tended to yield higher CH4 emissions.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Emission, Greenland, Methane, Svalbard, Tundra
in
Ambio
volume
46
pages
11 pages
publisher
Springer
external identifiers
  • scopus:85010380422
  • wos:000395124900007
ISSN
0044-7447
DOI
10.1007/s13280-016-0893-3
language
English
LU publication?
yes
id
04f3f43f-cf3c-4723-b89a-eaf21d42bdf1
date added to LUP
2017-02-06 08:42:40
date last changed
2018-01-14 04:29:44
@article{04f3f43f-cf3c-4723-b89a-eaf21d42bdf1,
  abstract     = {<p>Methane (CH<sub>4</sub>) emissions from arctic tundra typically follow relations with soil temperature and water table depth, but these process-based descriptions can be difficult to apply to areas where no measurements exist. We formulated a description of the broader temporal flux pattern in the growing season based on two distinct CH<sub>4</sub> source components from slow and fast-turnover carbon. We used automatic closed chamber flux measurements from NE Greenland (74°N), W Greenland (64°N), and Svalbard (78°N) to identify and discuss these components. The temporal separation was well-suited in NE Greenland, where the hypothesized slow-turnover carbon peaked at a time significantly related to the timing of snowmelt. The temporally wider component from fast-turnover carbon dominated the emissions in W Greenland and Svalbard. Altogether, we found no dependence of the total seasonal CH<sub>4</sub> budget to the timing of snowmelt, and warmer sites and years tended to yield higher CH<sub>4</sub> emissions.</p>},
  author       = {Pirk, Norbert and Mastepanov, Mikhail and López-Blanco, Efrén and Christensen, Louise H. and Christiansen, Hanne and Hansen, Birger Ulf and Lund, Magnus and Parmentier, Frans Jan W and Skov, Kirstine and Christensen, Torben R.},
  issn         = {0044-7447},
  keyword      = {Emission,Greenland,Methane,Svalbard,Tundra},
  language     = {eng},
  month        = {02},
  pages        = {70--80},
  publisher    = {Springer},
  series       = {Ambio},
  title        = {Toward a statistical description of methane emissions from arctic wetlands},
  url          = {http://dx.doi.org/10.1007/s13280-016-0893-3},
  volume       = {46},
  year         = {2017},
}