Spatiotemporal Variations in the Air Freezing and Thawing Index Over the Mongolian Plateau From 1901 to 2019
The Mongolian Plateau is located in the permafrost transitional zone between high-altitudinal and high-latitudinal permafrost regions in the Northern Hemisphere. Current knowledge of the thermal state and changes in the permafrost on the Mongolian Plateau is limited. This study adopted an improved c...
| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-05-01
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| Series: | Frontiers in Environmental Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fenvs.2022.875450/full |
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| author | Xin Ma Xin Ma Tonghua Wu Tonghua Wu Xiaofan Zhu Peiqing Lou Peiqing Lou Dong Wang Dong Wang Saruulzaya Adiya Dashtseren Avirmed Battogtokh Dorjgotov Jie Chen Chengpeng Shang Chengpeng Shang Amin Wen Amin Wen Yune La Yune La Xianhua Wei Xianhua Wei Ren Li |
| author_facet | Xin Ma Xin Ma Tonghua Wu Tonghua Wu Xiaofan Zhu Peiqing Lou Peiqing Lou Dong Wang Dong Wang Saruulzaya Adiya Dashtseren Avirmed Battogtokh Dorjgotov Jie Chen Chengpeng Shang Chengpeng Shang Amin Wen Amin Wen Yune La Yune La Xianhua Wei Xianhua Wei Ren Li |
| author_sort | Xin Ma |
| collection | DOAJ |
| description | The Mongolian Plateau is located in the permafrost transitional zone between high-altitudinal and high-latitudinal permafrost regions in the Northern Hemisphere. Current knowledge of the thermal state and changes in the permafrost on the Mongolian Plateau is limited. This study adopted an improved calculation method of the Mongolian Plateau air freezing and thawing index using the monthly air temperature reanalysis dataset from the Climate Research Unit (CRU). The spatial and temporal variation characteristics from 1901 to 2019 were further assessed by the Mann–Kendall (M–K) test and spatial interpolation methods. The results indicate that the spatial distributions of the freezing and thawing index show clear latitudinal zonality. Over the study period, the air freezing index decreased by 4.1°C·d/yr, and the air thawing index increased by 2.3°C·d/yr. The change point in the air thawing index appeared in 1995 (p < 0.05) based on the M–K method, in contrast to the so-called hiatus in global warming. Our results reveal rapid warming on the Mongolian Plateau, especially in the permafrost region, and are useful for studying permafrost changes on the Mongolian Plateau. |
| first_indexed | 2024-12-12T19:36:06Z |
| format | Article |
| id | doaj.art-2de52b5e3a284970b94bcf85da08e471 |
| institution | Directory Open Access Journal |
| issn | 2296-665X |
| language | English |
| last_indexed | 2024-12-12T19:36:06Z |
| publishDate | 2022-05-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Environmental Science |
| spelling | doaj.art-2de52b5e3a284970b94bcf85da08e4712022-12-22T00:14:19ZengFrontiers Media S.A.Frontiers in Environmental Science2296-665X2022-05-011010.3389/fenvs.2022.875450875450Spatiotemporal Variations in the Air Freezing and Thawing Index Over the Mongolian Plateau From 1901 to 2019Xin Ma0Xin Ma1Tonghua Wu2Tonghua Wu3Xiaofan Zhu4Peiqing Lou5Peiqing Lou6Dong Wang7Dong Wang8Saruulzaya Adiya9Dashtseren Avirmed10Battogtokh Dorjgotov11Jie Chen12Chengpeng Shang13Chengpeng Shang14Amin Wen15Amin Wen16Yune La17Yune La18Xianhua Wei19Xianhua Wei20Ren Li21Cryosphere Research Station on the Qinghai-Tibet Plateau, State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, ChinaUniversity of Chinese Academy of Sciences, Beijing, ChinaCryosphere Research Station on the Qinghai-Tibet Plateau, State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, ChinaUniversity of Chinese Academy of Sciences, Beijing, ChinaCryosphere Research Station on the Qinghai-Tibet Plateau, State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, ChinaCryosphere Research Station on the Qinghai-Tibet Plateau, State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, ChinaUniversity of Chinese Academy of Sciences, Beijing, ChinaCryosphere Research Station on the Qinghai-Tibet Plateau, State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, ChinaUniversity of Chinese Academy of Sciences, Beijing, ChinaInstitute of Geography and Geoecology, Mongolian Academy of Sciences, Ulaanbaatar, MongoliaInstitute of Geography and Geoecology, Mongolian Academy of Sciences, Ulaanbaatar, MongoliaInstitute of Geography and Geoecology, Mongolian Academy of Sciences, Ulaanbaatar, MongoliaCryosphere Research Station on the Qinghai-Tibet Plateau, State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, ChinaCryosphere Research Station on the Qinghai-Tibet Plateau, State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, ChinaUniversity of Chinese Academy of Sciences, Beijing, ChinaCryosphere Research Station on the Qinghai-Tibet Plateau, State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, ChinaUniversity of Chinese Academy of Sciences, Beijing, ChinaCryosphere Research Station on the Qinghai-Tibet Plateau, State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, ChinaUniversity of Chinese Academy of Sciences, Beijing, ChinaCryosphere Research Station on the Qinghai-Tibet Plateau, State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, ChinaUniversity of Chinese Academy of Sciences, Beijing, ChinaCryosphere Research Station on the Qinghai-Tibet Plateau, State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, ChinaThe Mongolian Plateau is located in the permafrost transitional zone between high-altitudinal and high-latitudinal permafrost regions in the Northern Hemisphere. Current knowledge of the thermal state and changes in the permafrost on the Mongolian Plateau is limited. This study adopted an improved calculation method of the Mongolian Plateau air freezing and thawing index using the monthly air temperature reanalysis dataset from the Climate Research Unit (CRU). The spatial and temporal variation characteristics from 1901 to 2019 were further assessed by the Mann–Kendall (M–K) test and spatial interpolation methods. The results indicate that the spatial distributions of the freezing and thawing index show clear latitudinal zonality. Over the study period, the air freezing index decreased by 4.1°C·d/yr, and the air thawing index increased by 2.3°C·d/yr. The change point in the air thawing index appeared in 1995 (p < 0.05) based on the M–K method, in contrast to the so-called hiatus in global warming. Our results reveal rapid warming on the Mongolian Plateau, especially in the permafrost region, and are useful for studying permafrost changes on the Mongolian Plateau.https://www.frontiersin.org/articles/10.3389/fenvs.2022.875450/fullfreezing and thawing indexpermafrostCRUMongolian plateauchange-point |
| spellingShingle | Xin Ma Xin Ma Tonghua Wu Tonghua Wu Xiaofan Zhu Peiqing Lou Peiqing Lou Dong Wang Dong Wang Saruulzaya Adiya Dashtseren Avirmed Battogtokh Dorjgotov Jie Chen Chengpeng Shang Chengpeng Shang Amin Wen Amin Wen Yune La Yune La Xianhua Wei Xianhua Wei Ren Li Spatiotemporal Variations in the Air Freezing and Thawing Index Over the Mongolian Plateau From 1901 to 2019 Frontiers in Environmental Science freezing and thawing index permafrost CRU Mongolian plateau change-point |
| title | Spatiotemporal Variations in the Air Freezing and Thawing Index Over the Mongolian Plateau From 1901 to 2019 |
| title_full | Spatiotemporal Variations in the Air Freezing and Thawing Index Over the Mongolian Plateau From 1901 to 2019 |
| title_fullStr | Spatiotemporal Variations in the Air Freezing and Thawing Index Over the Mongolian Plateau From 1901 to 2019 |
| title_full_unstemmed | Spatiotemporal Variations in the Air Freezing and Thawing Index Over the Mongolian Plateau From 1901 to 2019 |
| title_short | Spatiotemporal Variations in the Air Freezing and Thawing Index Over the Mongolian Plateau From 1901 to 2019 |
| title_sort | spatiotemporal variations in the air freezing and thawing index over the mongolian plateau from 1901 to 2019 |
| topic | freezing and thawing index permafrost CRU Mongolian plateau change-point |
| url | https://www.frontiersin.org/articles/10.3389/fenvs.2022.875450/full |
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