An observation-based assessment of the influences of air temperature and snow depth on soil temperature in Russia
This study assessed trends in the variability of soil temperature (T _SOIL ) using spatially averaged observation records from Russian meteorological land stations. The contributions of surface air temperature (SAT) and snow depth (SND) to T _SOIL variation were quantitatively evaluated. Composite t...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2014-01-01
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| Series: | Environmental Research Letters |
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| Online Access: | https://doi.org/10.1088/1748-9326/9/6/064026 |
| _version_ | 1827870497244708864 |
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| author | Hotaek Park Artem B Sherstiukov Alexander N Fedorov Igor V Polyakov John E Walsh |
| author_facet | Hotaek Park Artem B Sherstiukov Alexander N Fedorov Igor V Polyakov John E Walsh |
| author_sort | Hotaek Park |
| collection | DOAJ |
| description | This study assessed trends in the variability of soil temperature (T _SOIL ) using spatially averaged observation records from Russian meteorological land stations. The contributions of surface air temperature (SAT) and snow depth (SND) to T _SOIL variation were quantitatively evaluated. Composite time series of these data revealed positive trends during the period of 1921–2011, with accelerated increases since the 1970s. The T _SOIL warming rate over the entire period was faster than the SAT warming rate in both permafrost and non-permafrost regions, suggesting that SND contributes to T _SOIL warming. Statistical analysis revealed that the highest correlation between SND and T _SOIL was in eastern Siberia, which is underlain by permafrost. SND in this region accounted for 50% or more of the observed variation in T _SOIL . T _SOIL in the non-permafrost region of western Siberia was significantly correlated with changes in SAT. Thus, the main factors associated with T _SOIL variation differed between permafrost and non-permafrost regions. This finding underscores the importance of including SND data when assessing historical and future variations and trends of permafrost in the Northern Hemisphere. |
| first_indexed | 2024-03-12T15:57:41Z |
| format | Article |
| id | doaj.art-67bdad7b6e944cc9ab7313f1e625ef37 |
| institution | Directory Open Access Journal |
| issn | 1748-9326 |
| language | English |
| last_indexed | 2024-03-12T15:57:41Z |
| publishDate | 2014-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Environmental Research Letters |
| spelling | doaj.art-67bdad7b6e944cc9ab7313f1e625ef372023-08-09T14:46:50ZengIOP PublishingEnvironmental Research Letters1748-93262014-01-019606402610.1088/1748-9326/9/6/064026An observation-based assessment of the influences of air temperature and snow depth on soil temperature in RussiaHotaek Park0Artem B Sherstiukov1Alexander N Fedorov2Igor V Polyakov3John E Walsh4Research and Development Center for Global Change, JAMSTEC, Yokosuka, 237-0061, JapanAll-Russian Research Institute of Hydrometeorological Information—World Data Centre, Obninsk, RussiaMelnikov Permafrost Institute, SB RAS, Yakutsk, Russia; International Center BEST, North-East Federal University , Yakutsk, RussiaInternational Arctic Research Center, University of Alaska Fairbanks , Fairbanks, AK 99775, USAInternational Arctic Research Center, University of Alaska Fairbanks , Fairbanks, AK 99775, USAThis study assessed trends in the variability of soil temperature (T _SOIL ) using spatially averaged observation records from Russian meteorological land stations. The contributions of surface air temperature (SAT) and snow depth (SND) to T _SOIL variation were quantitatively evaluated. Composite time series of these data revealed positive trends during the period of 1921–2011, with accelerated increases since the 1970s. The T _SOIL warming rate over the entire period was faster than the SAT warming rate in both permafrost and non-permafrost regions, suggesting that SND contributes to T _SOIL warming. Statistical analysis revealed that the highest correlation between SND and T _SOIL was in eastern Siberia, which is underlain by permafrost. SND in this region accounted for 50% or more of the observed variation in T _SOIL . T _SOIL in the non-permafrost region of western Siberia was significantly correlated with changes in SAT. Thus, the main factors associated with T _SOIL variation differed between permafrost and non-permafrost regions. This finding underscores the importance of including SND data when assessing historical and future variations and trends of permafrost in the Northern Hemisphere.https://doi.org/10.1088/1748-9326/9/6/064026soil temperatureRussiasnow depthair temperaturepermafrost |
| spellingShingle | Hotaek Park Artem B Sherstiukov Alexander N Fedorov Igor V Polyakov John E Walsh An observation-based assessment of the influences of air temperature and snow depth on soil temperature in Russia Environmental Research Letters soil temperature Russia snow depth air temperature permafrost |
| title | An observation-based assessment of the influences of air temperature and snow depth on soil temperature in Russia |
| title_full | An observation-based assessment of the influences of air temperature and snow depth on soil temperature in Russia |
| title_fullStr | An observation-based assessment of the influences of air temperature and snow depth on soil temperature in Russia |
| title_full_unstemmed | An observation-based assessment of the influences of air temperature and snow depth on soil temperature in Russia |
| title_short | An observation-based assessment of the influences of air temperature and snow depth on soil temperature in Russia |
| title_sort | observation based assessment of the influences of air temperature and snow depth on soil temperature in russia |
| topic | soil temperature Russia snow depth air temperature permafrost |
| url | https://doi.org/10.1088/1748-9326/9/6/064026 |
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