Spatial modeling of permafrost distribution and properties on the Qinghai‐Tibet Plateau
Abstract Accurate information on the distribution of permafrost and its thermal and hydrological properties is critical for environmental management and engineering development. This study modeled the current state of permafrost on the Qinghai‐Tibet Plateau (QTP), including the spatial distribution...
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crwiley:10.1002/ppp.1971 2024-09-15T17:34:51+00:00 Spatial modeling of permafrost distribution and properties on the Qinghai‐Tibet Plateau Wu, Xiaobo Nan, Zhuotong Zhao, Shuping Zhao, Lin Cheng, Guodong National Natural Science Foundation of China 2018 http://dx.doi.org/10.1002/ppp.1971 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1971 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1971 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 29, issue 2, page 86-99 ISSN 1045-6740 1099-1530 journal-article 2018 crwiley https://doi.org/10.1002/ppp.1971 2024-08-27T04:25:19Z Abstract Accurate information on the distribution of permafrost and its thermal and hydrological properties is critical for environmental management and engineering development. This study modeled the current state of permafrost on the Qinghai‐Tibet Plateau (QTP), including the spatial distribution of permafrost, active‐layer thickness (ALT), mean annual ground temperature (MAGT), depth of zero annual amplitude (DZAA) and ground‐ice content using an improved Noah land surface model (LSM). The improved model was examined at a typical permafrost site and then applied to the entire QTP using existing gridded meteorological data and newly developed soil data. The simulated permafrost distribution and properties were validated against existing permafrost maps in three representative survey areas and with measurements from 54 boreholes. The results indicate that the Noah LSM with augmented physics and proper soil data support can model permafrost over the QTP. Permafrost was simulated to underlie an area of 1.113 × 10 6 km 2 in 2010, accounting for 43.8% of the entire area of the QTP. The modeled regional average ALT and MAGT were 3.23 m and −1.56°C, respectively. Spatially, MAGT increases and DZAA becomes shallower from north to south. Thermally unstable permafrost (MAGT above −0.5°C) is predominant, accounting for 38.75% of the whole permafrost area on the QTP. Ice‐rich permafrost was mainly simulated around lakes across the north‐central QTP. Article in Journal/Newspaper Active layer thickness Ice permafrost Permafrost and Periglacial Processes Wiley Online Library Permafrost and Periglacial Processes 29 2 86 99 |
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Wiley Online Library |
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English |
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Abstract Accurate information on the distribution of permafrost and its thermal and hydrological properties is critical for environmental management and engineering development. This study modeled the current state of permafrost on the Qinghai‐Tibet Plateau (QTP), including the spatial distribution of permafrost, active‐layer thickness (ALT), mean annual ground temperature (MAGT), depth of zero annual amplitude (DZAA) and ground‐ice content using an improved Noah land surface model (LSM). The improved model was examined at a typical permafrost site and then applied to the entire QTP using existing gridded meteorological data and newly developed soil data. The simulated permafrost distribution and properties were validated against existing permafrost maps in three representative survey areas and with measurements from 54 boreholes. The results indicate that the Noah LSM with augmented physics and proper soil data support can model permafrost over the QTP. Permafrost was simulated to underlie an area of 1.113 × 10 6 km 2 in 2010, accounting for 43.8% of the entire area of the QTP. The modeled regional average ALT and MAGT were 3.23 m and −1.56°C, respectively. Spatially, MAGT increases and DZAA becomes shallower from north to south. Thermally unstable permafrost (MAGT above −0.5°C) is predominant, accounting for 38.75% of the whole permafrost area on the QTP. Ice‐rich permafrost was mainly simulated around lakes across the north‐central QTP. |
author2 |
National Natural Science Foundation of China |
format |
Article in Journal/Newspaper |
author |
Wu, Xiaobo Nan, Zhuotong Zhao, Shuping Zhao, Lin Cheng, Guodong |
spellingShingle |
Wu, Xiaobo Nan, Zhuotong Zhao, Shuping Zhao, Lin Cheng, Guodong Spatial modeling of permafrost distribution and properties on the Qinghai‐Tibet Plateau |
author_facet |
Wu, Xiaobo Nan, Zhuotong Zhao, Shuping Zhao, Lin Cheng, Guodong |
author_sort |
Wu, Xiaobo |
title |
Spatial modeling of permafrost distribution and properties on the Qinghai‐Tibet Plateau |
title_short |
Spatial modeling of permafrost distribution and properties on the Qinghai‐Tibet Plateau |
title_full |
Spatial modeling of permafrost distribution and properties on the Qinghai‐Tibet Plateau |
title_fullStr |
Spatial modeling of permafrost distribution and properties on the Qinghai‐Tibet Plateau |
title_full_unstemmed |
Spatial modeling of permafrost distribution and properties on the Qinghai‐Tibet Plateau |
title_sort |
spatial modeling of permafrost distribution and properties on the qinghai‐tibet plateau |
publisher |
Wiley |
publishDate |
2018 |
url |
http://dx.doi.org/10.1002/ppp.1971 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1971 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1971 |
genre |
Active layer thickness Ice permafrost Permafrost and Periglacial Processes |
genre_facet |
Active layer thickness Ice permafrost Permafrost and Periglacial Processes |
op_source |
Permafrost and Periglacial Processes volume 29, issue 2, page 86-99 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.1971 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
29 |
container_issue |
2 |
container_start_page |
86 |
op_container_end_page |
99 |
_version_ |
1810430379927011328 |