2024-03-29T07:30:23Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/2016012020-12-13T00:02:30Zcom_10261_57com_10261_8col_10261_310
Tropical cyclone rainfall in the Mekong River Basin for 1983–2016
Chen, Aifang
Ho, Chang-Hoi
Chen, Deliang
Azorín-Molina, César
Chinese Academy of Sciences
China Scholarship Council
National Natural Science Foundation of China
Swedish Foundation for International Cooperation in Research and Higher Education
European Commission
Swedish Research Council
Chen, Aifang [0000-0002-3237-3122]
Ho, Chang-Hoi [0000-0002-1372-0037]
Chen, Deliang [0000-0003-0288-5618]
Tropical cyclones
Occurrence
Rainfall
Mekong River Basin
As home to about 70 million people, the Mekong River Basin (MRB), located in Mainland Southeast Asia, is often influenced by tropical cyclones (TCs) landfalling. The TCs not only cause flood and storm hazards, but also play important roles in providing freshwater resource and welcomed sediment transports. Our study focuses on the climatology of TCs and associated rainfall (TCR) in the MRB for 1983–2016. Results show that: (i) the mean landfall occurrence of TCs is 6.2 yr−1, leading to 36.7 mm yr−1 of annual mean TCR (2.5% of the annual total precipitation), which mainly occur in monsoon-TC season (i.e., June–November); (ii) TCs highly concentrate on the lower eastern MRB, generating the largest TCR contribution of 12.4% to the annual total precipitation; (iii) the annual mean contribution of TCs induced extreme precipitation - R20mm and R50mm (days of heavy precipitation rate ≥20 mm day−1 and ≥50 mm day−1, respectively) - to that from annual total precipitation is large in the lower eastern MRB; (iv) over 60% of the basin area is influenced by TCR on average; and (v) a significant weakening trend of the TC frequency has been observed. The present findings lay a foundation for further in-depth research of the potential influence of the dynamic TCs and the associated rainfall in the MRB.
This research was supported by the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDA20060401); the China Scholarship Council; the National Natural Science Foundation of China (Grant No. 91537210); Swedish STINT (Grant No. CH2015–6226); the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement (Grant No. 703733); and the Swedish VR (Grant No. 2017-03780).
2020-02-24T07:58:50Z
2020-02-24T07:58:50Z
2019-09-15
2020-02-24T07:58:50Z
artículo
http://purl.org/coar/resource_type/c_6501
doi: 10.1016/j.atmosres.2019.04.012
issn: 0169-8095
Atmospheric Research 226: 66-75 (2019)
http://hdl.handle.net/10261/201601
10.1016/j.atmosres.2019.04.012
http://dx.doi.org/10.13039/501100001728
http://dx.doi.org/10.13039/501100002367
http://dx.doi.org/10.13039/501100004543
http://dx.doi.org/10.13039/501100001809
http://dx.doi.org/10.13039/501100000780
Postprint
http://dx.doi.org/10.1016/j.atmosres.2019.04.012
Sí
open
Elsevier