Articles | Volume 25, issue 7
https://doi.org/10.5194/acp-25-4013-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-25-4013-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
09 Apr 2025
Research article |
| 09 Apr 2025
| 09 Apr 2025
One-year continuous observations of near-surface atmospheric water vapor stable isotopes at Matara, Sri Lanka, reveal a strong link to moisture sources and convective intensity
Yuqing Wu
State Key Laboratory of Tibetan Plateau Earth System, Resources and Environment, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
University of Chinese Academy of Sciences, Beijing 100049, China
State Key Laboratory of Tibetan Plateau Earth System, Resources and Environment, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
Lanzhou University, Lanzhou 733000, China
Aibin Zhao
State Key Laboratory of Tibetan Plateau Earth System, Resources and Environment, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
Xiaowei Niu
State Key Laboratory of Tibetan Plateau Earth System, Resources and Environment, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
Yigang Liu
State Key Laboratory of Tibetan Plateau Earth System, Resources and Environment, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
University of Chinese Academy of Sciences, Beijing 100049, China
Disna Ratnasekera
China-Sri Lanka Joint Center for Education and Research, Guangzhou 510301, China
Department of Agricultural Biology, Faculty of Agriculture, University of Ruhuna, Matara 81000, Sri Lanka
Tilak Priyadarshana Gamage
Faculty of Fisheries and Marine Sciences & Technology, University of Ruhuna, Matara 81000, Sri Lanka
Amarasinghe Hewage Ruwan Samantha
Faculty of Fisheries and Marine Sciences & Technology, University of Ruhuna, Matara 81000, Sri Lanka
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Short summary
Monitoring of atmospheric water vapor isotopes for 1 year at Matara, Sri Lanka, revealed clear seasonal variations in δ18O and d-excess. The results showed lower amplitudes of δ18O during the southwest monsoon and higher amplitudes of δ18O during the northeast monsoon. Sea surface evaporation and regional convective activity influenced the isotopic compositions. Our results facilitate an understanding of the impacts of local meteorological conditions on tropical water vapor isotope signals.
Monitoring of atmospheric water vapor isotopes for 1 year at Matara, Sri Lanka, revealed clear...
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