A 1200 ka Stable Isotope Record From the Center of the Badain Jaran Desert, Northwestern China: Implications for the Variation and Interplay of the Westerlies and the Asian Summer Monsoon
Abstract The variation and interplay of westerlies and the Asian summer monsoon (ASM) are important for understanding climate change in the Northern Hemisphere. Yet their spatial and temporal evolution is still debatable. Here, we present a stable isotopic record from the center of the Badain Jaran...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-04-01
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| Series: | Geochemistry, Geophysics, Geosystems |
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| Online Access: | https://doi.org/10.1029/2020GC009575 |
| _version_ | 1797638070185492480 |
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| author | Fei Wang Zaijun Li Xiaoyun Sun Baofeng Li Xin Wang Fahu Chen |
| author_facet | Fei Wang Zaijun Li Xiaoyun Sun Baofeng Li Xin Wang Fahu Chen |
| author_sort | Fei Wang |
| collection | DOAJ |
| description | Abstract The variation and interplay of westerlies and the Asian summer monsoon (ASM) are important for understanding climate change in the Northern Hemisphere. Yet their spatial and temporal evolution is still debatable. Here, we present a stable isotopic record from the center of the Badain Jaran Desert, in Northwestern China, which records the variations and interplay of the two climate systems during the past 1200 ka. The results indicate that the westerlies dominated the Badain Jaran area at least from 1200 to 600 ka, and possibly earlier. Associated with ASM enhancement since 600 ka, the westerlies and ASM alternatively dominated the regional warm season precipitation during glacial‐interglacial cycles, respectively. Meanwhile, the δ18Ocarb of the Badain Jaran area showed high‐frequency fluctuations which may reveal the joint impact of ASM and westerlies on regional hydrology after 450 ka. Affected by the westerlies and ASM changes, the C4 plants stepwise expanded at 600, 450, and 300 ka. These stepwise variations of westerlies and ASM are response to the global climate change which significantly influenced the ASM at 600 and 450 ka, and westerlies at 300 ka, respectively. In addition, the uplift of the Pamir‐Tibetan Plateau during the middle Pleistocene also exerts a profound effect on westerlies and ASM pattern across the East Asia on a long‐term time scale. |
| first_indexed | 2024-03-11T12:58:21Z |
| format | Article |
| id | doaj.art-45c842dd6b6143cb80187adeedc84162 |
| institution | Directory Open Access Journal |
| issn | 1525-2027 |
| language | English |
| last_indexed | 2024-03-11T12:58:21Z |
| publishDate | 2021-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geochemistry, Geophysics, Geosystems |
| spelling | doaj.art-45c842dd6b6143cb80187adeedc841622023-11-03T16:55:42ZengWileyGeochemistry, Geophysics, Geosystems1525-20272021-04-01224n/an/a10.1029/2020GC009575A 1200 ka Stable Isotope Record From the Center of the Badain Jaran Desert, Northwestern China: Implications for the Variation and Interplay of the Westerlies and the Asian Summer MonsoonFei Wang0Zaijun Li1Xiaoyun Sun2Baofeng Li3Xin Wang4Fahu Chen5Key Laboratory of Western China's Environmental Systems (Ministry of Education) and College of Earth and Environmental Sciences Lanzhou University Lanzhou ChinaKey Laboratory of Western China's Environmental Systems (Ministry of Education) and College of Earth and Environmental Sciences Lanzhou University Lanzhou ChinaKey Laboratory of Western China's Environmental Systems (Ministry of Education) and College of Earth and Environmental Sciences Lanzhou University Lanzhou ChinaNorthwest Institute of Eco‐Environment and Resources Chinese Academy of Science Beijing ChinaKey Laboratory of Western China's Environmental Systems (Ministry of Education) and College of Earth and Environmental Sciences Lanzhou University Lanzhou ChinaKey Laboratory of Western China's Environmental Systems (Ministry of Education) and College of Earth and Environmental Sciences Lanzhou University Lanzhou ChinaAbstract The variation and interplay of westerlies and the Asian summer monsoon (ASM) are important for understanding climate change in the Northern Hemisphere. Yet their spatial and temporal evolution is still debatable. Here, we present a stable isotopic record from the center of the Badain Jaran Desert, in Northwestern China, which records the variations and interplay of the two climate systems during the past 1200 ka. The results indicate that the westerlies dominated the Badain Jaran area at least from 1200 to 600 ka, and possibly earlier. Associated with ASM enhancement since 600 ka, the westerlies and ASM alternatively dominated the regional warm season precipitation during glacial‐interglacial cycles, respectively. Meanwhile, the δ18Ocarb of the Badain Jaran area showed high‐frequency fluctuations which may reveal the joint impact of ASM and westerlies on regional hydrology after 450 ka. Affected by the westerlies and ASM changes, the C4 plants stepwise expanded at 600, 450, and 300 ka. These stepwise variations of westerlies and ASM are response to the global climate change which significantly influenced the ASM at 600 and 450 ka, and westerlies at 300 ka, respectively. In addition, the uplift of the Pamir‐Tibetan Plateau during the middle Pleistocene also exerts a profound effect on westerlies and ASM pattern across the East Asia on a long‐term time scale.https://doi.org/10.1029/2020GC009575Asian interiorC4 expansionMBETibetan Plateau uplift |
| spellingShingle | Fei Wang Zaijun Li Xiaoyun Sun Baofeng Li Xin Wang Fahu Chen A 1200 ka Stable Isotope Record From the Center of the Badain Jaran Desert, Northwestern China: Implications for the Variation and Interplay of the Westerlies and the Asian Summer Monsoon Geochemistry, Geophysics, Geosystems Asian interior C4 expansion MBE Tibetan Plateau uplift |
| title | A 1200 ka Stable Isotope Record From the Center of the Badain Jaran Desert, Northwestern China: Implications for the Variation and Interplay of the Westerlies and the Asian Summer Monsoon |
| title_full | A 1200 ka Stable Isotope Record From the Center of the Badain Jaran Desert, Northwestern China: Implications for the Variation and Interplay of the Westerlies and the Asian Summer Monsoon |
| title_fullStr | A 1200 ka Stable Isotope Record From the Center of the Badain Jaran Desert, Northwestern China: Implications for the Variation and Interplay of the Westerlies and the Asian Summer Monsoon |
| title_full_unstemmed | A 1200 ka Stable Isotope Record From the Center of the Badain Jaran Desert, Northwestern China: Implications for the Variation and Interplay of the Westerlies and the Asian Summer Monsoon |
| title_short | A 1200 ka Stable Isotope Record From the Center of the Badain Jaran Desert, Northwestern China: Implications for the Variation and Interplay of the Westerlies and the Asian Summer Monsoon |
| title_sort | 1200 ka stable isotope record from the center of the badain jaran desert northwestern china implications for the variation and interplay of the westerlies and the asian summer monsoon |
| topic | Asian interior C4 expansion MBE Tibetan Plateau uplift |
| url | https://doi.org/10.1029/2020GC009575 |
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