Assessing typhoon-induced compound flood drivers: a case study in Ho Chi Minh City, Vietnam

Rodrigues do Amaral, Francisco; Gratiot, Nicolas; Pellarin, Thierry; Tu, Tran Anh

doi:https://doi.org/10.5194/nhess-23-3379-2023

Articles | Volume 23, issue 11

https://doi.org/10.5194/nhess-23-3379-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/nhess-23-3379-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 23, issue 11

Research article

|

07 Nov 2023

Research article |

| 07 Nov 2023

Assessing typhoon-induced compound flood drivers: a case study in Ho Chi Minh City, Vietnam

Francisco Rodrigues do Amaral, Nicolas Gratiot, Thierry Pellarin, and Tran Anh Tu

Data sets

GPCC Full Data Daily Version 2020 at 1.0°: Daily Land-Surface Precipitation from Rain-Gauges built on GTS-based and Historic Data M. Ziese, A. Rauthe-Schöch, A. Becker, P. Finger, E. Rustemeier, E., and U. Schneider https://doi.org/10.5676/DWD_GPCC/FD_D_V2020_100

ERA5-Land: a state-of-the-art global reanalysis dataset for land applications (https://www.doi.org/10.24381/cds.68d2bb30) J. Muñoz-Sabater, E. Dutra, A. Agustí-Panareda, C. Albergel, G. Arduini, G. Balsamo, S. Boussetta, M. Choulga, S. Harrigan, H. Hersbach, B. Martens, D. G. Miralles, M. Piles, N. J. Rodríguez-Fernández, E. Zsoter, C. Buontempo, and J.-N. Thépaut https://doi.org/10.5194/essd-13-4349-2021

GPM IMERG Final Precipitation L3 1 day 0.1 degree x 0.1 degree V06 G. Huffman, E. Stocker, D. Bolvin, E. Nelkin, and J. Tan https://doi.org/10.5067/GPM/IMERGDF/DAY/06

Sea level measured by tide gauges from global oceans - the Joint Archive for Sea Level holdings (NCEI Accession 0019568) P. C. Caldwell, M. A. Merrifield, and P. R. Thompson https://doi.org/10.7289/V5V40S7W

First comprehensive quantification of annual land use/cover from 1990 to 2020 across mainland Vietnam (https://www.eorc.jaxa.jp/ALOS/en/dataset/lulc/lulc_vnm_v2109_e.htm) D. C. Phan, T. H. Trung, V. T. Truong, T. Sasagawa, T. P. T. Vu, D. T. Bui, M. Hayashi, T. Tadono, and K. N. Nasahara https://doi.org/10.1038/s41598-021-89034-5

Short summary

We propose an in-depth analysis of typhoon-induced compound flood drivers in the megacity of Ho Chi Minh, Vietnam. We use in situ and satellite measurements throughout the event to form a holistic overview of its impact. No evidence of storm surge was found, and peak precipitation presents a 16 h time lag to peak river discharge, which evacuates only 1.5 % of available water. The astronomical tide controls the river level even during the extreme event, and it is the main urban flood driver.