A longer climate memory carried by soil freeze-thaw processes in Siberia
The climate memory of a land surface generally persists for only a few months, but analysis of surface meteorological data revealed a longer-term climate memory carried by soil freeze-thaw processes in Siberia. Surface temperature variability during the snowmelt season corresponds reasonably well wi...
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fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/51785 2023-05-15T17:57:49+02:00 A longer climate memory carried by soil freeze-thaw processes in Siberia Matsumura, Shinji Yamazaki, Koji http://hdl.handle.net/2115/51785 https://doi.org/10.1088/1748-9326/7/4/045402 eng eng IOP Publishing http://hdl.handle.net/2115/51785 Environmental Research Letters, 7(4): 045402 http://dx.doi.org/10.1088/1748-9326/7/4/045402 http://creativecommons.org/licenses/by/3.0/ CC-BY climate memory soil freeze-thaw processes permafrost 451 article fthokunivhus https://doi.org/10.1088/1748-9326/7/4/045402 2022-11-18T01:02:34Z The climate memory of a land surface generally persists for only a few months, but analysis of surface meteorological data revealed a longer-term climate memory carried by soil freeze-thaw processes in Siberia. Surface temperature variability during the snowmelt season corresponds reasonably well with that in the summer of the following year, when most stations show a secondary autocorrelation peak. The surface temperature memory is thought to be stored as variations in the amount of snowmelt water held in the soil, and through soil freezing, which emerges as latent heat variations in the near-surface atmosphere during soil thawing approximately one year later. The ground conditions are dry in the longer-term climate memory regions, such as eastern Siberia, where less snow cover (higher surface air temperature) in spring results in less snowmelt water or lower soil moisture in the summer. Consequently, through soil freezing, it will require less latent heat to thaw in the summer of the following year, resulting in higher surface air temperature. In addition to soil moisture and snow cover, soil freeze-thaw processes can also act as agents of climate memory in the near-surface atmosphere. Article in Journal/Newspaper permafrost Siberia Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Environmental Research Letters 7 4 045402 |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
topic |
climate memory soil freeze-thaw processes permafrost 451 |
spellingShingle |
climate memory soil freeze-thaw processes permafrost 451 Matsumura, Shinji Yamazaki, Koji A longer climate memory carried by soil freeze-thaw processes in Siberia |
topic_facet |
climate memory soil freeze-thaw processes permafrost 451 |
description |
The climate memory of a land surface generally persists for only a few months, but analysis of surface meteorological data revealed a longer-term climate memory carried by soil freeze-thaw processes in Siberia. Surface temperature variability during the snowmelt season corresponds reasonably well with that in the summer of the following year, when most stations show a secondary autocorrelation peak. The surface temperature memory is thought to be stored as variations in the amount of snowmelt water held in the soil, and through soil freezing, which emerges as latent heat variations in the near-surface atmosphere during soil thawing approximately one year later. The ground conditions are dry in the longer-term climate memory regions, such as eastern Siberia, where less snow cover (higher surface air temperature) in spring results in less snowmelt water or lower soil moisture in the summer. Consequently, through soil freezing, it will require less latent heat to thaw in the summer of the following year, resulting in higher surface air temperature. In addition to soil moisture and snow cover, soil freeze-thaw processes can also act as agents of climate memory in the near-surface atmosphere. |
format |
Article in Journal/Newspaper |
author |
Matsumura, Shinji Yamazaki, Koji |
author_facet |
Matsumura, Shinji Yamazaki, Koji |
author_sort |
Matsumura, Shinji |
title |
A longer climate memory carried by soil freeze-thaw processes in Siberia |
title_short |
A longer climate memory carried by soil freeze-thaw processes in Siberia |
title_full |
A longer climate memory carried by soil freeze-thaw processes in Siberia |
title_fullStr |
A longer climate memory carried by soil freeze-thaw processes in Siberia |
title_full_unstemmed |
A longer climate memory carried by soil freeze-thaw processes in Siberia |
title_sort |
longer climate memory carried by soil freeze-thaw processes in siberia |
publisher |
IOP Publishing |
url |
http://hdl.handle.net/2115/51785 https://doi.org/10.1088/1748-9326/7/4/045402 |
genre |
permafrost Siberia |
genre_facet |
permafrost Siberia |
op_relation |
http://hdl.handle.net/2115/51785 Environmental Research Letters, 7(4): 045402 http://dx.doi.org/10.1088/1748-9326/7/4/045402 |
op_rights |
http://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1088/1748-9326/7/4/045402 |
container_title |
Environmental Research Letters |
container_volume |
7 |
container_issue |
4 |
container_start_page |
045402 |
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1766166328316526592 |