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Article

Assessing Impact of Climate Variability in Southwest Coastal Bangladesh Using Livelihood Vulnerability Index

1
South Asian Water (SAWA) Fellowship Program, Institute of Water and Flood Management, Bangladesh University of Engineering and Technology, Dhaka 1000, Bangladesh
2
Institute of Water and Flood Management, Bangladesh University of Engineering and Technology, Dhaka 1000, Bangladesh
*
Author to whom correspondence should be addressed.
Academic Editors: Ademe Mekonnen and Jing Zhang
Climate 2021, 9(7), 107; https://doi.org/10.3390/cli9070107
Received: 19 May 2021 / Revised: 15 June 2021 / Accepted: 24 June 2021 / Published: 29 June 2021
(This article belongs to the Special Issue Sub-Regional Scale Climate Change)
This study analyzed the variability of rainfall and temperature in southwest coastal Bangladesh and assessed the impact of such variability on local livelihood in the last two decades. The variability analysis involved the use of coefficient of variation (CV), standardized precipitation anomaly (Z), and precipitation concentration index (PCI). Linear regression analysis was conducted to assess the trends, and a Mann–Kendall test was performed to detect the significance of the trends. The impact of climate variability was assessed by using a livelihood vulnerability index (LVI), which consisted of six livelihood components with several sub-components under each component. Primary data to construct the LVIs were collected through a semi-structed questionnaire survey of 132 households in a coastal polder. The survey data were triangulated and supplemented with qualitative data from focused group discussions and key informant interviews. The results showed significant rises in temperature in southwest coastal Bangladesh. Though there were no discernable trends in annual and seasonal rainfalls, the anomalies increased in the dry season. The annual PCI and Z were found to capture the climate variability better than the currently used mean monthly standard deviation. The comparison of the LVIs of the present decade with the past indicated that the livelihood vulnerability, particularly in the water component, had increased in the coastal polder due to the increases in natural hazards and climate variability. The index-based vulnerability analysis conducted in this study can be adapted for livelihood vulnerability assessment in deltaic coastal areas of Asia and Africa. View Full-Text
Keywords: climate variability; climatic trend; precipitation concentration index; vulnerability components; livelihood vulnerability index; coastal Bangladesh climate variability; climatic trend; precipitation concentration index; vulnerability components; livelihood vulnerability index; coastal Bangladesh
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MDPI and ACS Style

Mehzabin, S.; Mondal, M.S. Assessing Impact of Climate Variability in Southwest Coastal Bangladesh Using Livelihood Vulnerability Index. Climate 2021, 9, 107. https://doi.org/10.3390/cli9070107

AMA Style

Mehzabin S, Mondal MS. Assessing Impact of Climate Variability in Southwest Coastal Bangladesh Using Livelihood Vulnerability Index. Climate. 2021; 9(7):107. https://doi.org/10.3390/cli9070107

Chicago/Turabian Style

Mehzabin, Sabrina, and M. S. Mondal. 2021. "Assessing Impact of Climate Variability in Southwest Coastal Bangladesh Using Livelihood Vulnerability Index" Climate 9, no. 7: 107. https://doi.org/10.3390/cli9070107

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