Warming and monsoonal climate lead to large export of millennial-aged carbon from permafrost catchments of the Qinghai-Tibet Plateau ...
Permafrost carbon pool destabilization causes substantial fluvial export of soil carbon, yet the export patterns and magnitudes are not well understood. Here we investigated the radiocarbon (14C) in dissolved organic and inorganic carbon (DOC and DIC, respectively) exported from a mid-sized river in...
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ftdatacite:10.3929/ethz-b-000427814 2024-09-30T14:41:05+00:00 Warming and monsoonal climate lead to large export of millennial-aged carbon from permafrost catchments of the Qinghai-Tibet Plateau ... Song, Chunlin Wang, Genxu Haghipour, Negar Raymond, Peter A. 2020 application/pdf https://dx.doi.org/10.3929/ethz-b-000427814 http://hdl.handle.net/20.500.11850/427814 en eng ETH Zurich info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 Riverine carbon export Radiocarbon Stable carbon isotope Permafrost Qinghai-Tibet Plateau river Climate warming Text Journal Article ScholarlyArticle article-journal 2020 ftdatacite https://doi.org/10.3929/ethz-b-000427814 2024-09-02T07:54:09Z Permafrost carbon pool destabilization causes substantial fluvial export of soil carbon, yet the export patterns and magnitudes are not well understood. Here we investigated the radiocarbon (14C) in dissolved organic and inorganic carbon (DOC and DIC, respectively) exported from a mid-sized river in the central Qinghai-Tibet Plateau (QTP) permafrost region. We utilized the radiocarbon dating technique to reveal the ages of riverine dissolved carbon and a statistical model to partition the riverine carbon from different age categories. DOC and DIC showed bomb-depleted 14C signatures corresponding to millennial ages. Seasonally, 14C-depleted DOC and DIC ages were associated with active layer thaw and flow path deepening. Spatially, older DOC and DIC were found in the valley sites correlated with warmer permafrost and higher groundwater flow. Further, isotopic mixing models suggested that 83 ± 27% of riverine DOC was derived from active layer and permafrost layer aged carbon. DIC export was comprised of a ... : Environmental Research Letters, 15 (7) ... Text permafrost DataCite |
institution |
Open Polar |
collection |
DataCite |
op_collection_id |
ftdatacite |
language |
English |
topic |
Riverine carbon export Radiocarbon Stable carbon isotope Permafrost Qinghai-Tibet Plateau river Climate warming |
spellingShingle |
Riverine carbon export Radiocarbon Stable carbon isotope Permafrost Qinghai-Tibet Plateau river Climate warming Song, Chunlin Wang, Genxu Haghipour, Negar Raymond, Peter A. Warming and monsoonal climate lead to large export of millennial-aged carbon from permafrost catchments of the Qinghai-Tibet Plateau ... |
topic_facet |
Riverine carbon export Radiocarbon Stable carbon isotope Permafrost Qinghai-Tibet Plateau river Climate warming |
description |
Permafrost carbon pool destabilization causes substantial fluvial export of soil carbon, yet the export patterns and magnitudes are not well understood. Here we investigated the radiocarbon (14C) in dissolved organic and inorganic carbon (DOC and DIC, respectively) exported from a mid-sized river in the central Qinghai-Tibet Plateau (QTP) permafrost region. We utilized the radiocarbon dating technique to reveal the ages of riverine dissolved carbon and a statistical model to partition the riverine carbon from different age categories. DOC and DIC showed bomb-depleted 14C signatures corresponding to millennial ages. Seasonally, 14C-depleted DOC and DIC ages were associated with active layer thaw and flow path deepening. Spatially, older DOC and DIC were found in the valley sites correlated with warmer permafrost and higher groundwater flow. Further, isotopic mixing models suggested that 83 ± 27% of riverine DOC was derived from active layer and permafrost layer aged carbon. DIC export was comprised of a ... : Environmental Research Letters, 15 (7) ... |
format |
Text |
author |
Song, Chunlin Wang, Genxu Haghipour, Negar Raymond, Peter A. |
author_facet |
Song, Chunlin Wang, Genxu Haghipour, Negar Raymond, Peter A. |
author_sort |
Song, Chunlin |
title |
Warming and monsoonal climate lead to large export of millennial-aged carbon from permafrost catchments of the Qinghai-Tibet Plateau ... |
title_short |
Warming and monsoonal climate lead to large export of millennial-aged carbon from permafrost catchments of the Qinghai-Tibet Plateau ... |
title_full |
Warming and monsoonal climate lead to large export of millennial-aged carbon from permafrost catchments of the Qinghai-Tibet Plateau ... |
title_fullStr |
Warming and monsoonal climate lead to large export of millennial-aged carbon from permafrost catchments of the Qinghai-Tibet Plateau ... |
title_full_unstemmed |
Warming and monsoonal climate lead to large export of millennial-aged carbon from permafrost catchments of the Qinghai-Tibet Plateau ... |
title_sort |
warming and monsoonal climate lead to large export of millennial-aged carbon from permafrost catchments of the qinghai-tibet plateau ... |
publisher |
ETH Zurich |
publishDate |
2020 |
url |
https://dx.doi.org/10.3929/ethz-b-000427814 http://hdl.handle.net/20.500.11850/427814 |
genre |
permafrost |
genre_facet |
permafrost |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.3929/ethz-b-000427814 |
_version_ |
1811643516352200704 |