Long-Term Variability in Ground Thermal State in Central Yakutia’s Tuymaada Valley

Stepan Prokopievich Varlamov, Yuri Borisovich Skachkov and Pavel Nikolaevich Skryabin
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Stepan Prokopievich Varlamov: Melnikov Permafrost Institute SB RAS, 677010 Yakutsk, Russia
Yuri Borisovich Skachkov: Melnikov Permafrost Institute SB RAS, 677010 Yakutsk, Russia
Pavel Nikolaevich Skryabin: Melnikov Permafrost Institute SB RAS, 677010 Yakutsk, Russia

Land, 2021, vol. 10, issue 11, 1-22

Abstract: This paper presents the results of long-term temperature monitoring at the Yakutsk and Zeleny Lug stations, which are experimental sites, for the thermal state of valley permafrost landscapes under the conditions of modern climate warming. An analysis of the long-term data from meteorological stations in the region clearly showed one of the highest trends of increase in the mean annual air temperature in the north of Russia. Here, we established quantitative regularities in the long-term variability of the ground temperature at the bottom of the active layer and at zero amplitude. The dynamics of the ground temperature of the layer of zero amplitude during climate warming indicate the thermal stability of permafrost. The main regulating factor of the thermal state of grounds in permafrost landscapes is short-term fluctuations in the regime of snow accumulation. Active layer thickness is characterized by low interannual variability, weak climate warming responses, and insignificant trends. The results of studies of the thermal regime of soils can be extended to the same types of valley landscapes in the Lena River, and are a reliable basis for predicting heat transfer in natural and disturbed landscapes.

Keywords: seasonal thaw depth; climate changes; geothermal monitoring; permafrost response; ground temperature (search for similar items in EconPapers)
JEL-codes: Q15 Q2 Q24 Q28 Q5 R14 R52 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:gam:jlands:v:10:y:2021:i:11:p:1231-:d:676974

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