Extreme wind return periods from tropical cyclones  in Bangladesh: insights from a high-resolution convection-permitting numerical model

Steptoe, Hamish; Economou, Theodoros

doi:https://doi.org/10.5194/nhess-21-1313-2021

Articles | Volume 21, issue 4

Nat. Hazards Earth Syst. Sci., 21, 1313–1322, 2021

https://doi.org/10.5194/nhess-21-1313-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Nat. Hazards Earth Syst. Sci., 21, 1313–1322, 2021

https://doi.org/10.5194/nhess-21-1313-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 21, issue 4

Research article

29 Apr 2021

Research article | 29 Apr 2021

Extreme wind return periods from tropical cyclones in Bangladesh: insights from a high-resolution convection-permitting numerical model

Hamish Steptoe and Theodoros Economou

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Nov 2020	58	21	2	81
Dec 2020	17	7	1	25
Jan 2021	10	6	0	16
Feb 2021	15	2	0	17
Mar 2021	12	3	0	15
Apr 2021	77	13	2	92
May 2021	169	40	1	210
Jun 2021	42	9	0	51
Jul 2021	21	5	0	26
Aug 2021	22	7	1	30
Sep 2021	30	16	0	46
Oct 2021	26	38	0	64
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Jan 2022	21	51	0	72
Feb 2022	20	44	2	66
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Cumulative views and downloads (calculated since 12 Oct 2020)

Month	HTML	PDF	XML	Total
Oct 2020	139	21	3	163
Nov 2020	58	21	2	81
Dec 2020	17	7	1	25
Jan 2021	10	6	0	16
Feb 2021	15	2	0	17
Mar 2021	12	3	0	15
Apr 2021	77	13	2	92
May 2021	169	40	1	210
Jun 2021	42	9	0	51
Jul 2021	21	5	0	26
Aug 2021	22	7	1	30
Sep 2021	30	16	0	46
Oct 2021	26	38	0	64
Nov 2021	27	49	2	78
Dec 2021	17	54	1	72
Jan 2022	21	51	0	72
Feb 2022	20	44	2	66
Mar 2022	23	66	1	90
Apr 2022	16	69	2	87
May 2022	13	18	1	32
Jun 2022	11	12	1	24
Jul 2022	27	6	0	33
Aug 2022	11	4	0	15

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Short summary

We use high-resolution computer simulations of tropical cyclones to investigate extreme wind speeds over Bangladesh. We show that some northern provinces, up to 200 km inland, may experience conditions equal to or exceeding a very severe cyclonic storm event with a likelihood equal to coastal regions less than 50 km inland. We hope that these kilometre-scale hazard maps facilitate one part of the risk assessment chain to improve local ability to make effective risk management decisions.

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