Spring tropical cyclones modulate near-surface isotopic compositions of atmospheric water vapour in Kathmandu, Nepal

Adhikari, Niranjan; Gao, Jing; Zhao, Aibin; Xu, Tianli; Chen, Manli; Niu, Xiaowei; Yao, Tandong

doi:https://doi.org/10.5194/acp-24-3279-2024

Articles | Volume 24, issue 5

https://doi.org/10.5194/acp-24-3279-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-24-3279-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 24, issue 5

Research article

|

15 Mar 2024

Research article |

| 15 Mar 2024

Spring tropical cyclones modulate near-surface isotopic compositions of atmospheric water vapour in Kathmandu, Nepal

Niranjan Adhikari, Jing Gao, Aibin Zhao, Tianli Xu, Manli Chen, Xiaowei Niu, and Tandong Yao

Supplement

https://doi.org/10.5194/acp-24-3279-2024-supplement

Data sets

Spring tropical cyclones modulate near-surface isotopic compositions of atmospheric water vapour at Kathmandu, Nepal Jing Gao and Niranjan Adhikari https://zenodo.org/records/10776701

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Short summary

Atmospheric water vapour isotopes at Kathmandu recorded significantly low δ¹⁸O_vand δD_vvalues during cyclones Tauktae and Yaas in 2021, originating in the Arabian Sea and Bay of Bengal, respectively. Such depletion was associated with the intense moisture convergence and strong convection near the sampling site. The lower δ¹⁸O_v and higher d-excess_v values during cyclone Yaas may be attributed to the occurrence of robust downdrafts during the rainfall.