Characteristics of near‐surface soil freeze–thaw status using high resolution CLM5.0 simulations on the Tibetan Plateau
Abstract Soil freeze–thaw alternation is a natural characteristic of the Tibetan Plateau (TP), and plays an important role in surface energy balance and eco‐hydrological processes. The soil freeze–thaw process on the TP has changed significantly owing to global warming, affecting the alpine ecosyste...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2023-08-01
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| Series: | Atmospheric Science Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/asl.1168 |
| _version_ | 1797766903000727552 |
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| author | Qing Peng Binghao Jia Xin Lai Longhuan Wang Qifeng Huang |
| author_facet | Qing Peng Binghao Jia Xin Lai Longhuan Wang Qifeng Huang |
| author_sort | Qing Peng |
| collection | DOAJ |
| description | Abstract Soil freeze–thaw alternation is a natural characteristic of the Tibetan Plateau (TP), and plays an important role in surface energy balance and eco‐hydrological processes. The soil freeze–thaw process on the TP has changed significantly owing to global warming, affecting the alpine ecosystem structure and function. This study used high‐resolution atmospheric forcing datasets to drive the Community Land Model version 5.0 (CLM5.0) to simulate the near‐surface soil freeze–thaw status between 1979 and 2020. The simulated results were compared with in situ observations, and then the spatiotemporal distribution of the freeze start‐date (FSD), freeze end‐date (FED), freeze duration (FD), and thaw duration (TD) at a depth of 0.1 m were analyzed. The Nash–Sutcliffe efficiency coefficients (NSEs) of FSD, FED, FD, and TD between simulations and in situ observations were 0.77, 0.90, 0.98 and 0.92, and the correlation coefficients of FSD, FED, FD, TD were 0.97, 0.99, 0.99 and 0.98, respectively. The spatial distribution of FSD and TD was characterized by gradually increasing from northwest to southeast while FED and FD exhibited the opposite characteristics. FSD, FED, FD, and TD changed at an area‐mean rate of 1.1, −1.4, −2.5, and 2.5 days decade−1, respectively. This study provides an important reference for analyzing and predicting the changes in near surface soil freeze–thaw status on the TP under the warming climate. |
| first_indexed | 2024-03-12T20:32:00Z |
| format | Article |
| id | doaj.art-1f461b655ca1445b8de8af6bdc182e1a |
| institution | Directory Open Access Journal |
| issn | 1530-261X |
| language | English |
| last_indexed | 2024-03-12T20:32:00Z |
| publishDate | 2023-08-01 |
| publisher | Wiley |
| record_format | Article |
| series | Atmospheric Science Letters |
| spelling | doaj.art-1f461b655ca1445b8de8af6bdc182e1a2023-08-01T20:42:52ZengWileyAtmospheric Science Letters1530-261X2023-08-01248n/an/a10.1002/asl.1168Characteristics of near‐surface soil freeze–thaw status using high resolution CLM5.0 simulations on the Tibetan PlateauQing Peng0Binghao Jia1Xin Lai2Longhuan Wang3Qifeng Huang4Plateau Atmosphere and Environment Key Laboratory of Sichuan Province Chengdu University of Information Technology Chengdu ChinaState Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics Institute of Atmospheric Physics, Chinese Academy of Sciences Beijing ChinaPlateau Atmosphere and Environment Key Laboratory of Sichuan Province Chengdu University of Information Technology Chengdu ChinaState Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics Institute of Atmospheric Physics, Chinese Academy of Sciences Beijing ChinaPlateau Atmosphere and Environment Key Laboratory of Sichuan Province Chengdu University of Information Technology Chengdu ChinaAbstract Soil freeze–thaw alternation is a natural characteristic of the Tibetan Plateau (TP), and plays an important role in surface energy balance and eco‐hydrological processes. The soil freeze–thaw process on the TP has changed significantly owing to global warming, affecting the alpine ecosystem structure and function. This study used high‐resolution atmospheric forcing datasets to drive the Community Land Model version 5.0 (CLM5.0) to simulate the near‐surface soil freeze–thaw status between 1979 and 2020. The simulated results were compared with in situ observations, and then the spatiotemporal distribution of the freeze start‐date (FSD), freeze end‐date (FED), freeze duration (FD), and thaw duration (TD) at a depth of 0.1 m were analyzed. The Nash–Sutcliffe efficiency coefficients (NSEs) of FSD, FED, FD, and TD between simulations and in situ observations were 0.77, 0.90, 0.98 and 0.92, and the correlation coefficients of FSD, FED, FD, TD were 0.97, 0.99, 0.99 and 0.98, respectively. The spatial distribution of FSD and TD was characterized by gradually increasing from northwest to southeast while FED and FD exhibited the opposite characteristics. FSD, FED, FD, and TD changed at an area‐mean rate of 1.1, −1.4, −2.5, and 2.5 days decade−1, respectively. This study provides an important reference for analyzing and predicting the changes in near surface soil freeze–thaw status on the TP under the warming climate.https://doi.org/10.1002/asl.1168freeze durationnear‐surfacesoil freeze–thawTibetan Plateau |
| spellingShingle | Qing Peng Binghao Jia Xin Lai Longhuan Wang Qifeng Huang Characteristics of near‐surface soil freeze–thaw status using high resolution CLM5.0 simulations on the Tibetan Plateau Atmospheric Science Letters freeze duration near‐surface soil freeze–thaw Tibetan Plateau |
| title | Characteristics of near‐surface soil freeze–thaw status using high resolution CLM5.0 simulations on the Tibetan Plateau |
| title_full | Characteristics of near‐surface soil freeze–thaw status using high resolution CLM5.0 simulations on the Tibetan Plateau |
| title_fullStr | Characteristics of near‐surface soil freeze–thaw status using high resolution CLM5.0 simulations on the Tibetan Plateau |
| title_full_unstemmed | Characteristics of near‐surface soil freeze–thaw status using high resolution CLM5.0 simulations on the Tibetan Plateau |
| title_short | Characteristics of near‐surface soil freeze–thaw status using high resolution CLM5.0 simulations on the Tibetan Plateau |
| title_sort | characteristics of near surface soil freeze thaw status using high resolution clm5 0 simulations on the tibetan plateau |
| topic | freeze duration near‐surface soil freeze–thaw Tibetan Plateau |
| url | https://doi.org/10.1002/asl.1168 |
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