Freeze/thaw processes in complex permafrost landscapes of northern Siberia simulated using the TEM ecosystem model: impact of thermokarst ponds and lakes
Freeze/thaw (F/T) processes can be quite different under the various land surface types found in the complex tundra of the Arctic, such as polygonal tundra (wet center and dry rims), ponds, and thermokarst lakes. Proper simu- lation of these different processes is essential for accurate prediction o...
Published in: | Geoscientific Model Development |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Copernicus Publications
2014
|
Subjects: | |
Online Access: | https://epic.awi.de/id/eprint/37601/ https://doi.org/10.5194/gmd-7-1671-2014 https://hdl.handle.net/10013/epic.45212 |
id |
ftawi:oai:epic.awi.de:37601 |
---|---|
record_format |
openpolar |
spelling |
ftawi:oai:epic.awi.de:37601 2024-09-15T18:30:08+00:00 Freeze/thaw processes in complex permafrost landscapes of northern Siberia simulated using the TEM ecosystem model: impact of thermokarst ponds and lakes Yi, S. Wischnewski, K. Langer, Moritz Muster, S. Boike, J. 2014 https://epic.awi.de/id/eprint/37601/ https://doi.org/10.5194/gmd-7-1671-2014 https://hdl.handle.net/10013/epic.45212 unknown Copernicus Publications Yi, S. , Wischnewski, K. , Langer, M. orcid:0000-0002-2704-3655 , Muster, S. and Boike, J. orcid:0000-0002-5875-2112 (2014) Freeze/thaw processes in complex permafrost landscapes of northern Siberia simulated using the TEM ecosystem model: impact of thermokarst ponds and lakes , Geoscientific Model Development, 7 (4), pp. 1671-1689 . doi:10.5194/gmd-7-1671-2014 <https://doi.org/10.5194/gmd-7-1671-2014> , hdl:10013/epic.45212 info:eu-repo/semantics/openAccess EPIC3Geoscientific Model Development, Copernicus Publications, 7(4), pp. 1671-1689, ISSN: 1991-9603 Article isiRev info:eu-repo/semantics/article 2014 ftawi https://doi.org/10.5194/gmd-7-1671-2014 2024-06-24T04:11:05Z Freeze/thaw (F/T) processes can be quite different under the various land surface types found in the complex tundra of the Arctic, such as polygonal tundra (wet center and dry rims), ponds, and thermokarst lakes. Proper simu- lation of these different processes is essential for accurate prediction of the release of greenhouse gases under a warm- ing climate scenario. In this study we have incorporated the water layer into a dynamic organic soil version of the Terres- trial Ecosystem Model (DOS-TEM), having first verified and validated the model. Results showed that (1) the DOS-TEM was very efficient and its results compared well with analyti- cal solutions for idealized cases, and (2) despite a number of limitations and uncertainties in the modeling, the simulations compared reasonably well with in situ measurements from polygon rims, polygon centers (with and without water), and lakes on Samoylov Island, Siberia, indicating the suitability of the DOS-TEM for simulating the various F/T processes. Sensitivity tests were performed on the effects of water depth and our results indicated that both water and snow cover are very important in the simulated thermal processes, for both polygon centers and lakes. We therefore concluded that the polygon rims and polygon centers (with various maximum water depths) should be considered separately, and that the dynamics of water depth in both polygons and lakes should be taken into account when simulating thermal processes for methane emission studies. Article in Journal/Newspaper permafrost Thermokarst Tundra Siberia Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Geoscientific Model Development 7 4 1671 1689 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Freeze/thaw (F/T) processes can be quite different under the various land surface types found in the complex tundra of the Arctic, such as polygonal tundra (wet center and dry rims), ponds, and thermokarst lakes. Proper simu- lation of these different processes is essential for accurate prediction of the release of greenhouse gases under a warm- ing climate scenario. In this study we have incorporated the water layer into a dynamic organic soil version of the Terres- trial Ecosystem Model (DOS-TEM), having first verified and validated the model. Results showed that (1) the DOS-TEM was very efficient and its results compared well with analyti- cal solutions for idealized cases, and (2) despite a number of limitations and uncertainties in the modeling, the simulations compared reasonably well with in situ measurements from polygon rims, polygon centers (with and without water), and lakes on Samoylov Island, Siberia, indicating the suitability of the DOS-TEM for simulating the various F/T processes. Sensitivity tests were performed on the effects of water depth and our results indicated that both water and snow cover are very important in the simulated thermal processes, for both polygon centers and lakes. We therefore concluded that the polygon rims and polygon centers (with various maximum water depths) should be considered separately, and that the dynamics of water depth in both polygons and lakes should be taken into account when simulating thermal processes for methane emission studies. |
format |
Article in Journal/Newspaper |
author |
Yi, S. Wischnewski, K. Langer, Moritz Muster, S. Boike, J. |
spellingShingle |
Yi, S. Wischnewski, K. Langer, Moritz Muster, S. Boike, J. Freeze/thaw processes in complex permafrost landscapes of northern Siberia simulated using the TEM ecosystem model: impact of thermokarst ponds and lakes |
author_facet |
Yi, S. Wischnewski, K. Langer, Moritz Muster, S. Boike, J. |
author_sort |
Yi, S. |
title |
Freeze/thaw processes in complex permafrost landscapes of northern Siberia simulated using the TEM ecosystem model: impact of thermokarst ponds and lakes |
title_short |
Freeze/thaw processes in complex permafrost landscapes of northern Siberia simulated using the TEM ecosystem model: impact of thermokarst ponds and lakes |
title_full |
Freeze/thaw processes in complex permafrost landscapes of northern Siberia simulated using the TEM ecosystem model: impact of thermokarst ponds and lakes |
title_fullStr |
Freeze/thaw processes in complex permafrost landscapes of northern Siberia simulated using the TEM ecosystem model: impact of thermokarst ponds and lakes |
title_full_unstemmed |
Freeze/thaw processes in complex permafrost landscapes of northern Siberia simulated using the TEM ecosystem model: impact of thermokarst ponds and lakes |
title_sort |
freeze/thaw processes in complex permafrost landscapes of northern siberia simulated using the tem ecosystem model: impact of thermokarst ponds and lakes |
publisher |
Copernicus Publications |
publishDate |
2014 |
url |
https://epic.awi.de/id/eprint/37601/ https://doi.org/10.5194/gmd-7-1671-2014 https://hdl.handle.net/10013/epic.45212 |
genre |
permafrost Thermokarst Tundra Siberia |
genre_facet |
permafrost Thermokarst Tundra Siberia |
op_source |
EPIC3Geoscientific Model Development, Copernicus Publications, 7(4), pp. 1671-1689, ISSN: 1991-9603 |
op_relation |
Yi, S. , Wischnewski, K. , Langer, M. orcid:0000-0002-2704-3655 , Muster, S. and Boike, J. orcid:0000-0002-5875-2112 (2014) Freeze/thaw processes in complex permafrost landscapes of northern Siberia simulated using the TEM ecosystem model: impact of thermokarst ponds and lakes , Geoscientific Model Development, 7 (4), pp. 1671-1689 . doi:10.5194/gmd-7-1671-2014 <https://doi.org/10.5194/gmd-7-1671-2014> , hdl:10013/epic.45212 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/gmd-7-1671-2014 |
container_title |
Geoscientific Model Development |
container_volume |
7 |
container_issue |
4 |
container_start_page |
1671 |
op_container_end_page |
1689 |
_version_ |
1810471613280288768 |