Past, Present and Future States and Variations of the late Quarternary Permafrost Subsystem
Permafrost and seasonally frozen ground comprise a critically important component of the dynamic arctic terrestrial system, constituting a closely tied subsystem interacting with snow cover, vegetation, and the overlying atmosphere. This permafrost subsystem regulates the local exchange of energy, w...
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2015
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dataone:doi:10.18739/A24F1MK0B 2024-06-03T18:46:38+00:00 Past, Present and Future States and Variations of the late Quarternary Permafrost Subsystem Kazuyuki Saito No geographic description provided. ENVELOPE(-180.0,180.0,90.0,-90.0) BEGINDATE: 2011-07-01T00:00:00Z ENDDATE: 2015-06-30T00:00:00Z 2015-10-02T00:00:00Z https://doi.org/10.18739/A24F1MK0B unknown Arctic Data Center ARCSS Dataset 2015 dataone:urn:node:ARCTIC https://doi.org/10.18739/A24F1MK0B 2024-06-03T18:16:34Z Permafrost and seasonally frozen ground comprise a critically important component of the dynamic arctic terrestrial system, constituting a closely tied subsystem interacting with snow cover, vegetation, and the overlying atmosphere. This permafrost subsystem regulates the local exchange of energy, water, and materials (including carbon and nitrogen), and its influence extends beyond the arctic land to the hydrosphere and the extra-tropical climate. Furthermore, the long timescale of permafrost dynamics requires evaluation of the evolution and impacts of the subsystem on the glacial-interglacial time frame. While some recent numerical projections show rapid and widespread degradation of permafrost in response to climate change during this century, global climate system models with physically based snow and permafrost dynamics have not been fully tested, using new observationally-based evidence, for spatial and temporal variability of the subsystem under different climate conditions such as the Holocene optimum or the Last Glacial Maximum (LGM). Evaluation of the climate sensitivity to the permafrost will provide vital insight to future scenarios, especially in the Northern Hemisphere. The focus will be on three late Quaternary eras for which numerical simulations are widely performed by the collaborative efforts of the Paleoclimate Model Intercomparison Project (PMIP: i.e., the preindustrial present (0 ka, where ka = thousand years before present), mid-Holocene (6 ka), and the LGM (21ka). This project will focus on evaluating the structure and function of the permafrost subsystem under different climate conditions. Dataset Arctic Climate change permafrost Arctic Data Center (via DataONE) Arctic |
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Arctic Data Center (via DataONE) |
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dataone:urn:node:ARCTIC |
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unknown |
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ARCSS Kazuyuki Saito Past, Present and Future States and Variations of the late Quarternary Permafrost Subsystem |
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ARCSS |
description |
Permafrost and seasonally frozen ground comprise a critically important component of the dynamic arctic terrestrial system, constituting a closely tied subsystem interacting with snow cover, vegetation, and the overlying atmosphere. This permafrost subsystem regulates the local exchange of energy, water, and materials (including carbon and nitrogen), and its influence extends beyond the arctic land to the hydrosphere and the extra-tropical climate. Furthermore, the long timescale of permafrost dynamics requires evaluation of the evolution and impacts of the subsystem on the glacial-interglacial time frame. While some recent numerical projections show rapid and widespread degradation of permafrost in response to climate change during this century, global climate system models with physically based snow and permafrost dynamics have not been fully tested, using new observationally-based evidence, for spatial and temporal variability of the subsystem under different climate conditions such as the Holocene optimum or the Last Glacial Maximum (LGM). Evaluation of the climate sensitivity to the permafrost will provide vital insight to future scenarios, especially in the Northern Hemisphere. The focus will be on three late Quaternary eras for which numerical simulations are widely performed by the collaborative efforts of the Paleoclimate Model Intercomparison Project (PMIP: i.e., the preindustrial present (0 ka, where ka = thousand years before present), mid-Holocene (6 ka), and the LGM (21ka). This project will focus on evaluating the structure and function of the permafrost subsystem under different climate conditions. |
format |
Dataset |
author |
Kazuyuki Saito |
author_facet |
Kazuyuki Saito |
author_sort |
Kazuyuki Saito |
title |
Past, Present and Future States and Variations of the late Quarternary Permafrost Subsystem |
title_short |
Past, Present and Future States and Variations of the late Quarternary Permafrost Subsystem |
title_full |
Past, Present and Future States and Variations of the late Quarternary Permafrost Subsystem |
title_fullStr |
Past, Present and Future States and Variations of the late Quarternary Permafrost Subsystem |
title_full_unstemmed |
Past, Present and Future States and Variations of the late Quarternary Permafrost Subsystem |
title_sort |
past, present and future states and variations of the late quarternary permafrost subsystem |
publisher |
Arctic Data Center |
publishDate |
2015 |
url |
https://doi.org/10.18739/A24F1MK0B |
op_coverage |
No geographic description provided. ENVELOPE(-180.0,180.0,90.0,-90.0) BEGINDATE: 2011-07-01T00:00:00Z ENDDATE: 2015-06-30T00:00:00Z |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change permafrost |
genre_facet |
Arctic Climate change permafrost |
op_doi |
https://doi.org/10.18739/A24F1MK0B |
_version_ |
1800868930183495680 |