Modelling of growing season methane fluxes in a high-Arctic wet tundra ecosystem 1997-2010 using in situ and high-resolution satellite data
Methane (CH4) fluxes 1997_2010 were studied by combining remotely sensed normalised difference water index (NDWI) with in situ CH4 fluxes from Rylekærene, a high-Arctic wet tundra ecosystem in the Zackenberg valley, north-eastern Greenland. In situ CH4 fluxes were measured using the closed-chamber t...
Published in: | Tellus B: Chemical and Physical Meteorology |
---|---|
Main Authors: | , , , , , , , , , , , , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Sweden, Co-Action Publishing
2013
|
Subjects: | |
Online Access: | https://doi.org/10.3402/tellusb.v65i0.19722 http://handle.westernsydney.edu.au:8081/1959.7/uws:48421 |
id |
ftunivwestsyd:oai:researchdirect.westernsydney.edu.au:uws_48421 |
---|---|
record_format |
openpolar |
spelling |
ftunivwestsyd:oai:researchdirect.westernsydney.edu.au:uws_48421 2023-05-15T14:58:45+02:00 Modelling of growing season methane fluxes in a high-Arctic wet tundra ecosystem 1997-2010 using in situ and high-resolution satellite data Tagesson, Torbern Mastepanov, Mikhail A. Molder, Meelis Tanstorf, Mikkel P. Eklundh, Lars R. Smith, Benjamin (R19508) Sigsgaard, Charlotte Lund, Magnus Ekberg, Anna Falk, Julie M. Friborg, Thomas Christensen, Torben R. Strom, Lena Hawkesbury Institute for the Environment (Host institution) 2013 print 22 https://doi.org/10.3402/tellusb.v65i0.19722 http://handle.westernsydney.edu.au:8081/1959.7/uws:48421 eng eng Sweden, Co-Action Publishing Tellus Series B: Chemical and Physical Meteorology--1600-0889--0280-6509 Vol. 65 Issue. 1 No. 19722 pp: - ©2013 T. Tagesson et al. This is an Open Access article distributed under the terms of the Creative Commons Attribution-Noncommercial 3.0 Unported License (http://creativecommons.org/licenses/by-nc/3.0/), permitting all non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. CC-BY-NC XXXXXX - Unknown climatic changes tundras tundra ecology peatlands methane Greenland journal article 2013 ftunivwestsyd https://doi.org/10.3402/tellusb.v65i0.19722 2020-12-05T17:54:44Z Methane (CH4) fluxes 1997_2010 were studied by combining remotely sensed normalised difference water index (NDWI) with in situ CH4 fluxes from Rylekærene, a high-Arctic wet tundra ecosystem in the Zackenberg valley, north-eastern Greenland. In situ CH4 fluxes were measured using the closed-chamber technique. Regression models between in situ CH4 fluxes and environmental variables [soil temperature (Tsoil), water table depth (WtD) and active layer (AL) thickness] were established for different temporal and spatial scales. The relationship between in situ WtD and remotely sensed NDWI was also studied. The regression models were combined and evaluated against in situ CH4 fluxes. The models including NDWI as the input data performed on average slightly better [root mean square error (RMSE) = 1.56] than the models without NDWI (RMSE = 1.67), and they were better in reproducing CH4 flux variability. The CH4 flux model that performed the best included exponential relationships against temporal variation in Tsoil and AL, an exponential relationship against spatial variation in WtD and a linear relationship between WtD and remotely sensed NDWI (RMSE = 1.50). There were no trends in modelled CH4 flux budgets between 1997 and 2010. Hence, during this period there were no trends in the soil temperature at 10 cm depth and NDWI. Article in Journal/Newspaper Arctic Greenland Tundra Zackenberg University of Western Sydney (UWS): Research Direct Arctic Greenland Tellus B: Chemical and Physical Meteorology 65 1 19722 |
institution |
Open Polar |
collection |
University of Western Sydney (UWS): Research Direct |
op_collection_id |
ftunivwestsyd |
language |
English |
topic |
XXXXXX - Unknown climatic changes tundras tundra ecology peatlands methane Greenland |
spellingShingle |
XXXXXX - Unknown climatic changes tundras tundra ecology peatlands methane Greenland Tagesson, Torbern Mastepanov, Mikhail A. Molder, Meelis Tanstorf, Mikkel P. Eklundh, Lars R. Smith, Benjamin (R19508) Sigsgaard, Charlotte Lund, Magnus Ekberg, Anna Falk, Julie M. Friborg, Thomas Christensen, Torben R. Strom, Lena Modelling of growing season methane fluxes in a high-Arctic wet tundra ecosystem 1997-2010 using in situ and high-resolution satellite data |
topic_facet |
XXXXXX - Unknown climatic changes tundras tundra ecology peatlands methane Greenland |
description |
Methane (CH4) fluxes 1997_2010 were studied by combining remotely sensed normalised difference water index (NDWI) with in situ CH4 fluxes from Rylekærene, a high-Arctic wet tundra ecosystem in the Zackenberg valley, north-eastern Greenland. In situ CH4 fluxes were measured using the closed-chamber technique. Regression models between in situ CH4 fluxes and environmental variables [soil temperature (Tsoil), water table depth (WtD) and active layer (AL) thickness] were established for different temporal and spatial scales. The relationship between in situ WtD and remotely sensed NDWI was also studied. The regression models were combined and evaluated against in situ CH4 fluxes. The models including NDWI as the input data performed on average slightly better [root mean square error (RMSE) = 1.56] than the models without NDWI (RMSE = 1.67), and they were better in reproducing CH4 flux variability. The CH4 flux model that performed the best included exponential relationships against temporal variation in Tsoil and AL, an exponential relationship against spatial variation in WtD and a linear relationship between WtD and remotely sensed NDWI (RMSE = 1.50). There were no trends in modelled CH4 flux budgets between 1997 and 2010. Hence, during this period there were no trends in the soil temperature at 10 cm depth and NDWI. |
author2 |
Hawkesbury Institute for the Environment (Host institution) |
format |
Article in Journal/Newspaper |
author |
Tagesson, Torbern Mastepanov, Mikhail A. Molder, Meelis Tanstorf, Mikkel P. Eklundh, Lars R. Smith, Benjamin (R19508) Sigsgaard, Charlotte Lund, Magnus Ekberg, Anna Falk, Julie M. Friborg, Thomas Christensen, Torben R. Strom, Lena |
author_facet |
Tagesson, Torbern Mastepanov, Mikhail A. Molder, Meelis Tanstorf, Mikkel P. Eklundh, Lars R. Smith, Benjamin (R19508) Sigsgaard, Charlotte Lund, Magnus Ekberg, Anna Falk, Julie M. Friborg, Thomas Christensen, Torben R. Strom, Lena |
author_sort |
Tagesson, Torbern |
title |
Modelling of growing season methane fluxes in a high-Arctic wet tundra ecosystem 1997-2010 using in situ and high-resolution satellite data |
title_short |
Modelling of growing season methane fluxes in a high-Arctic wet tundra ecosystem 1997-2010 using in situ and high-resolution satellite data |
title_full |
Modelling of growing season methane fluxes in a high-Arctic wet tundra ecosystem 1997-2010 using in situ and high-resolution satellite data |
title_fullStr |
Modelling of growing season methane fluxes in a high-Arctic wet tundra ecosystem 1997-2010 using in situ and high-resolution satellite data |
title_full_unstemmed |
Modelling of growing season methane fluxes in a high-Arctic wet tundra ecosystem 1997-2010 using in situ and high-resolution satellite data |
title_sort |
modelling of growing season methane fluxes in a high-arctic wet tundra ecosystem 1997-2010 using in situ and high-resolution satellite data |
publisher |
Sweden, Co-Action Publishing |
publishDate |
2013 |
url |
https://doi.org/10.3402/tellusb.v65i0.19722 http://handle.westernsydney.edu.au:8081/1959.7/uws:48421 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Greenland Tundra Zackenberg |
genre_facet |
Arctic Greenland Tundra Zackenberg |
op_relation |
Tellus Series B: Chemical and Physical Meteorology--1600-0889--0280-6509 Vol. 65 Issue. 1 No. 19722 pp: - |
op_rights |
©2013 T. Tagesson et al. This is an Open Access article distributed under the terms of the Creative Commons Attribution-Noncommercial 3.0 Unported License (http://creativecommons.org/licenses/by-nc/3.0/), permitting all non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. |
op_rightsnorm |
CC-BY-NC |
op_doi |
https://doi.org/10.3402/tellusb.v65i0.19722 |
container_title |
Tellus B: Chemical and Physical Meteorology |
container_volume |
65 |
container_issue |
1 |
container_start_page |
19722 |
_version_ |
1766330872222449664 |