The Seasonally Altered Atmosphere Moisture Circulations With Rainfall and Rainfall Isotopes in Southwest China
To interpret the climatic signals of precipitation/speleothem δ18O, it is critical to identify the importance of the factors affecting the precipitation δ18O. This study presents new stable isotope data for precipitation δ18O and δD in the site of Shenqi cave, southwest China, from November-2015 to...
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| Format: | Article |
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Frontiers Media S.A.
2022-02-01
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| Series: | Frontiers in Earth Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2022.795857/full |
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| author | Jingyao Zhao Jingyao Zhao Liangcheng Tan Liangcheng Tan Dong Li Carlos Pérez-Mejías Xiyu Dong Jian Wang Haiwei Zhang Hai Cheng Hai Cheng Hai Cheng |
| author_facet | Jingyao Zhao Jingyao Zhao Liangcheng Tan Liangcheng Tan Dong Li Carlos Pérez-Mejías Xiyu Dong Jian Wang Haiwei Zhang Hai Cheng Hai Cheng Hai Cheng |
| author_sort | Jingyao Zhao |
| collection | DOAJ |
| description | To interpret the climatic signals of precipitation/speleothem δ18O, it is critical to identify the importance of the factors affecting the precipitation δ18O. This study presents new stable isotope data for precipitation δ18O and δD in the site of Shenqi cave, southwest China, from November-2015 to October-2016 (the “Super-El Niño” event), to investigate the regional-scale climate forcing on precipitation δ18O. The precipitation δ18O, δD and d-excess have an obvious seasonality, relatively low values in the wet season and high in the dry season. The further analysis of seasonally altered LMWL and moisture circulations suggested that changes in atmosphere moisture circulations would be the key factor underlying the precipitation/speleothem δ18O fluctuations in our study area at least on seasonal timescales. Combined with the seasonal-monthly variations of the IsoGSM δ18O, GPCP/CRU rainfall and NCEP/NCAR moisture fluxes, we detected that the super-El Niño of 2016 have changed the distributions of monthly rainfall in wet season through the Western Pacific Subtropical High, but not mainly the precipitation isotopic compositions and moisture circulations in our study area. |
| first_indexed | 2024-12-13T01:11:03Z |
| format | Article |
| id | doaj.art-ffbc8aa296c848a78e8e7d5fa03d80c0 |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-12-13T01:11:03Z |
| publishDate | 2022-02-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-ffbc8aa296c848a78e8e7d5fa03d80c02022-12-22T00:04:29ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632022-02-011010.3389/feart.2022.795857795857The Seasonally Altered Atmosphere Moisture Circulations With Rainfall and Rainfall Isotopes in Southwest ChinaJingyao Zhao0Jingyao Zhao1Liangcheng Tan2Liangcheng Tan3Dong Li4Carlos Pérez-Mejías5Xiyu Dong6Jian Wang7Haiwei Zhang8Hai Cheng9Hai Cheng10Hai Cheng11Institute of Global Environmental Change, Xi’an Jiaotong University, Xi’an, ChinaKey Laboratory of Karst Dynamics, Ministry of Land and Resources, Institute of Karst Geology, Chinese Academy of Geological Sciences, Guilin, ChinaInstitute of Global Environmental Change, Xi’an Jiaotong University, Xi’an, ChinaState Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, ChinaLibrary of Chang’an University, Xi’an, ChinaInstitute of Global Environmental Change, Xi’an Jiaotong University, Xi’an, ChinaInstitute of Global Environmental Change, Xi’an Jiaotong University, Xi’an, ChinaInstitute of Global Environmental Change, Xi’an Jiaotong University, Xi’an, ChinaInstitute of Global Environmental Change, Xi’an Jiaotong University, Xi’an, ChinaInstitute of Global Environmental Change, Xi’an Jiaotong University, Xi’an, ChinaState Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, ChinaKey Laboratory of Karst Dynamics, Ministry of Land and Resources, Institute of Karst Geology, Chinese Academy of Geological Sciences, Guilin, ChinaTo interpret the climatic signals of precipitation/speleothem δ18O, it is critical to identify the importance of the factors affecting the precipitation δ18O. This study presents new stable isotope data for precipitation δ18O and δD in the site of Shenqi cave, southwest China, from November-2015 to October-2016 (the “Super-El Niño” event), to investigate the regional-scale climate forcing on precipitation δ18O. The precipitation δ18O, δD and d-excess have an obvious seasonality, relatively low values in the wet season and high in the dry season. The further analysis of seasonally altered LMWL and moisture circulations suggested that changes in atmosphere moisture circulations would be the key factor underlying the precipitation/speleothem δ18O fluctuations in our study area at least on seasonal timescales. Combined with the seasonal-monthly variations of the IsoGSM δ18O, GPCP/CRU rainfall and NCEP/NCAR moisture fluxes, we detected that the super-El Niño of 2016 have changed the distributions of monthly rainfall in wet season through the Western Pacific Subtropical High, but not mainly the precipitation isotopic compositions and moisture circulations in our study area.https://www.frontiersin.org/articles/10.3389/feart.2022.795857/fullprecipitation δ18Omonsoonsuper-El Niñomoisture circulationsLMWL |
| spellingShingle | Jingyao Zhao Jingyao Zhao Liangcheng Tan Liangcheng Tan Dong Li Carlos Pérez-Mejías Xiyu Dong Jian Wang Haiwei Zhang Hai Cheng Hai Cheng Hai Cheng The Seasonally Altered Atmosphere Moisture Circulations With Rainfall and Rainfall Isotopes in Southwest China Frontiers in Earth Science precipitation δ18O monsoon super-El Niño moisture circulations LMWL |
| title | The Seasonally Altered Atmosphere Moisture Circulations With Rainfall and Rainfall Isotopes in Southwest China |
| title_full | The Seasonally Altered Atmosphere Moisture Circulations With Rainfall and Rainfall Isotopes in Southwest China |
| title_fullStr | The Seasonally Altered Atmosphere Moisture Circulations With Rainfall and Rainfall Isotopes in Southwest China |
| title_full_unstemmed | The Seasonally Altered Atmosphere Moisture Circulations With Rainfall and Rainfall Isotopes in Southwest China |
| title_short | The Seasonally Altered Atmosphere Moisture Circulations With Rainfall and Rainfall Isotopes in Southwest China |
| title_sort | seasonally altered atmosphere moisture circulations with rainfall and rainfall isotopes in southwest china |
| topic | precipitation δ18O monsoon super-El Niño moisture circulations LMWL |
| url | https://www.frontiersin.org/articles/10.3389/feart.2022.795857/full |
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