Meteorological observations and eddy covariance raw data from polygonal tundra in the Lena River Delta, Siberia
We present the first ecosystem-scale methane flux data from a northern Siberian tundra ecosystem covering the entire snow-free period from spring thaw until initial freeze-back. Eddy covariance measurements of methane emission were carried out from the beginning of June until the end of September in...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.753001 2023-05-15T14:27:38+02:00 Meteorological observations and eddy covariance raw data from polygonal tundra in the Lena River Delta, Siberia Sachs, Torsten Wille, Christian Boike, Julia Kutzbach, Lars LATITUDE: 72.374000 * LONGITUDE: 126.496660 * DATE/TIME START: 2006-05-30T07:15:00 * DATE/TIME END: 2006-09-19T06:15:00 2008-11-03 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.753001 https://doi.org/10.1594/PANGAEA.753001 en eng PANGAEA Sachs, Torsten (2009): Land-atmosphere interactions on different scales – The exchange of methane between wet Arctic tundra and the atmosphere at the Lena River Delta, Siberia. PhD Thesis, University of Potsdam, Germany, 180 pp, hdl:10013/epic.34065.d001 https://doi.pangaea.de/10.1594/PANGAEA.753001 https://doi.org/10.1594/PANGAEA.753001 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Sachs, Torsten; Wille, Christian; Boike, Julia; Kutzbach, Lars (2008): Environmental controls on ecosystem-scale CH4 emission from polygonal tundra in the Lena River Delta, Siberia. Journal of Geophysical Research: Biogeosciences, 113, G00A03, https://doi.org/10.1029/2007JG000505 MULT Multiple investigations Samoylov_Island_ECS Samoylov eddy covariance station Samoylov Island Lena Delta Siberia Dataset 2008 ftpangaea https://doi.org/10.1594/PANGAEA.753001 https://doi.org/10.1029/2007JG000505 2023-01-20T07:31:57Z We present the first ecosystem-scale methane flux data from a northern Siberian tundra ecosystem covering the entire snow-free period from spring thaw until initial freeze-back. Eddy covariance measurements of methane emission were carried out from the beginning of June until the end of September in the southern central part of the Lena River Delta (72°22' N, 126°30' E). The study site is located in the zone of continuous permafrost and is characterized by Arctic continental climate with very low precipitation and a mean annual temperature of -14.7°C. We found relatively low fluxes of on average 18.7 mg/m**2/d, which we consider to be because of (1) extremely cold permafrost, (2) substrate limitation of the methanogenic archaea, and (3) a relatively high surface coverage of noninundated, moderately moist areas. Near-surface turbulence as measured by the eddy covariance system in 4 m above the ground surface was identified as the most important control on ecosystem-scale methane emission and explained about 60% of the variance in emissions, while soil temperature explained only 8%. In addition, atmospheric pressure was found to significantly improve an exponential model based on turbulence and soil temperature. Ebullition from waterlogged areas triggered by decreasing atmospheric pressure and near-surface turbulence is thought to be an important pathway that warrants more attention in future studies. The close coupling of methane fluxes and atmospheric parameters demonstrated here raises questions regarding the reliability of enclosure-based measurements, which inherently exclude these parameters. Dataset Arctic Arctic lena delta lena river permafrost Tundra Siberia PANGAEA - Data Publisher for Earth & Environmental Science Arctic ENVELOPE(126.496660,126.496660,72.374000,72.374000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
MULT Multiple investigations Samoylov_Island_ECS Samoylov eddy covariance station Samoylov Island Lena Delta Siberia |
spellingShingle |
MULT Multiple investigations Samoylov_Island_ECS Samoylov eddy covariance station Samoylov Island Lena Delta Siberia Sachs, Torsten Wille, Christian Boike, Julia Kutzbach, Lars Meteorological observations and eddy covariance raw data from polygonal tundra in the Lena River Delta, Siberia |
topic_facet |
MULT Multiple investigations Samoylov_Island_ECS Samoylov eddy covariance station Samoylov Island Lena Delta Siberia |
description |
We present the first ecosystem-scale methane flux data from a northern Siberian tundra ecosystem covering the entire snow-free period from spring thaw until initial freeze-back. Eddy covariance measurements of methane emission were carried out from the beginning of June until the end of September in the southern central part of the Lena River Delta (72°22' N, 126°30' E). The study site is located in the zone of continuous permafrost and is characterized by Arctic continental climate with very low precipitation and a mean annual temperature of -14.7°C. We found relatively low fluxes of on average 18.7 mg/m**2/d, which we consider to be because of (1) extremely cold permafrost, (2) substrate limitation of the methanogenic archaea, and (3) a relatively high surface coverage of noninundated, moderately moist areas. Near-surface turbulence as measured by the eddy covariance system in 4 m above the ground surface was identified as the most important control on ecosystem-scale methane emission and explained about 60% of the variance in emissions, while soil temperature explained only 8%. In addition, atmospheric pressure was found to significantly improve an exponential model based on turbulence and soil temperature. Ebullition from waterlogged areas triggered by decreasing atmospheric pressure and near-surface turbulence is thought to be an important pathway that warrants more attention in future studies. The close coupling of methane fluxes and atmospheric parameters demonstrated here raises questions regarding the reliability of enclosure-based measurements, which inherently exclude these parameters. |
format |
Dataset |
author |
Sachs, Torsten Wille, Christian Boike, Julia Kutzbach, Lars |
author_facet |
Sachs, Torsten Wille, Christian Boike, Julia Kutzbach, Lars |
author_sort |
Sachs, Torsten |
title |
Meteorological observations and eddy covariance raw data from polygonal tundra in the Lena River Delta, Siberia |
title_short |
Meteorological observations and eddy covariance raw data from polygonal tundra in the Lena River Delta, Siberia |
title_full |
Meteorological observations and eddy covariance raw data from polygonal tundra in the Lena River Delta, Siberia |
title_fullStr |
Meteorological observations and eddy covariance raw data from polygonal tundra in the Lena River Delta, Siberia |
title_full_unstemmed |
Meteorological observations and eddy covariance raw data from polygonal tundra in the Lena River Delta, Siberia |
title_sort |
meteorological observations and eddy covariance raw data from polygonal tundra in the lena river delta, siberia |
publisher |
PANGAEA |
publishDate |
2008 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.753001 https://doi.org/10.1594/PANGAEA.753001 |
op_coverage |
LATITUDE: 72.374000 * LONGITUDE: 126.496660 * DATE/TIME START: 2006-05-30T07:15:00 * DATE/TIME END: 2006-09-19T06:15:00 |
long_lat |
ENVELOPE(126.496660,126.496660,72.374000,72.374000) |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic lena delta lena river permafrost Tundra Siberia |
genre_facet |
Arctic Arctic lena delta lena river permafrost Tundra Siberia |
op_source |
Supplement to: Sachs, Torsten; Wille, Christian; Boike, Julia; Kutzbach, Lars (2008): Environmental controls on ecosystem-scale CH4 emission from polygonal tundra in the Lena River Delta, Siberia. Journal of Geophysical Research: Biogeosciences, 113, G00A03, https://doi.org/10.1029/2007JG000505 |
op_relation |
Sachs, Torsten (2009): Land-atmosphere interactions on different scales – The exchange of methane between wet Arctic tundra and the atmosphere at the Lena River Delta, Siberia. PhD Thesis, University of Potsdam, Germany, 180 pp, hdl:10013/epic.34065.d001 https://doi.pangaea.de/10.1594/PANGAEA.753001 https://doi.org/10.1594/PANGAEA.753001 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.753001 https://doi.org/10.1029/2007JG000505 |
_version_ |
1766301464093786112 |