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Assessment of Future Droughts in Vietnam Using High-Resolution Downscaled CMIP6 Projections

Author

Listed:
  • Marie-Noëlle Woillez

    (AFD - Agence française de développement)

  • Thanh Nguyen-Xuan
  • Dzung Nguyen-Le

    (USTH - Department of Advanced Materials Science and Nanotechnology [Hanoi] - USTH - University of Science and Technology of Hanoi)

  • Quan Tran-Anh

    (HUMG - Hanoi University of Mining and Geology)

  • Tung Nguyen-Duy

    (VNU - Vietnam National University [Hanoï])

  • Thanh Ngo-Duc

    (USTH - Department of Advanced Materials Science and Nanotechnology [Hanoi] - USTH - University of Science and Technology of Hanoi)

Abstract

study investigates drought conditions in Vietnam and its seven sub-climatic regions using the Standardized Precipitation- Evapotranspiration Index (SPEI). SPEI was derived from daily, high-resolution (10-km) precipitation and temperature products from the CMIP6-VN dataset, which statistically downscaled CMIP6 global models. Performance evaluation of 22 CMIP6-VN models confirmed their accuracy in representing precipitation and temperature characteristics for the reference period (1985–2014). Regarding the future period (2015–2099) under three Shared Socioeconomic Pathways (SSPs) (SSP1-2.6, SSP2-4.5, and SSP5-8.5), significant warming is projected across Vietnam, while precipitation projections remain uncertain, with most areas anticipated to experience slightly increased rainfall. SPEI results indicate that precipitation significantly influences drought conditions more than temperature, accounting for approximately 70% of the SPEI trend under SSP5- 8.5, which consequently introduces substantial uncertainty in drought projections. Drought conditions under different global warming levels (GWLs) were investigated, showing that while drought may not occur more frequently at high GWLs, more extreme drought events are projected. Five models exhibiting the most pronounced increasing drought trends were further analyzed, revealing a deterioration of all drought characteristics, particularly in the Northwest, Northeast, and Central Highlands. Copula statistical analysis reveals that drought events with higher return periods tend to be more prolonged and severe in the future.

Suggested Citation

  • Marie-Noëlle Woillez & Thanh Nguyen-Xuan & Dzung Nguyen-Le & Quan Tran-Anh & Tung Nguyen-Duy & Thanh Ngo-Duc, 2025. "Assessment of Future Droughts in Vietnam Using High-Resolution Downscaled CMIP6 Projections," Post-Print hal-05491362, HAL.
    • Handle: RePEc:hal:journl:hal-05491362
    Note: View the original document on HAL open archive server: https://hal.science/hal-05491362v1
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    References listed on IDEAS

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    1. Justin Sheffield & Eric F. Wood & Michael L. Roderick, 2012. "Little change in global drought over the past 60 years," Nature, Nature, vol. 491(7424), pages 435-438, November.
    2. Geeta G. Persad & Daniel L. Swain & Claire Kouba & J. Pablo Ortiz-Partida, 2020. "Inter-model agreement on projected shifts in California hydroclimate characteristics critical to water management," Climatic Change, Springer, vol. 162(3), pages 1493-1513, October.
    3. Edward Frees & Emiliano Valdez, 1998. "Understanding Relationships Using Copulas," North American Actuarial Journal, Taylor & Francis Journals, vol. 2(1), pages 1-25.
    4. J. Shiau, 2006. "Fitting Drought Duration and Severity with Two-Dimensional Copulas," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 20(5), pages 795-815, October.
    5. Nigel Arnell & Simon Gosling, 2016. "The impacts of climate change on river flood risk at the global scale," Climatic Change, Springer, vol. 134(3), pages 387-401, February.
    6. Kevin E. Trenberth & Aiguo Dai & Gerard van der Schrier & Philip D. Jones & Jonathan Barichivich & Keith R. Briffa & Justin Sheffield, 2014. "Global warming and changes in drought," Nature Climate Change, Nature, vol. 4(1), pages 17-22, January.
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