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Publication details

Document type
Journal articles

Document subtype
Full paper

Title
Quantification and mapping of coastal flooding extension for Bissau, Guinea-Bissau: A climate change scenario perspective [Quantificação e cartografia da extensão de inundação costeira em bissau, guiné-bissau: Perspetiva em cenário de alterações climáticas]

Participants in the publication
Fandé, MB (Author)
FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DE LISBOA
Ponte Lira, C. (Author)
Dep. Geologia
Instituto Dom Luiz
IDL - Instituto Dom Luiz
Antunes, C. (Author)
Dep. Engenharia Geográfica, Geofísica e Energia
IDL - Instituto Dom Luiz
Penha-Lopes , G. (Author)
CE3C - Centro de Ecologia, Evolução e Alterações Ambientais

Scope
International

Refereeing
Yes

Summary
Coastal flooding (CF), enhanced by climate change, is one of the most significant impacts of sea level rise (SLR). Bissau city, home to ~25% of Guinea-Bissau population is already affected by CF due to tides and storms. It is anticipated that the situation will deteriorate in coming decades with the expected scenarios of SLR. This article evaluated the vulnerability to coastal flooding of Bissau, using the single-value model, which considers two variables: inundation value and a topographic surface. The inundation value, here referred as total water level (TWL) was estimated by the sum of three vertical components: astronomical tide (AT), storm surge (SS) and the SLR estimation for the considered scenario. Thus, the inundation extension was quantified and mapped using a TWL estimated for the year 2100, and a high-precision global Digital Elevation Model (DEM – TanDEM-X) of the Bissau region. The results indicate that the land potentially to be flooded corresponds to 29.3% of the study area (94.9 km²). The Southwest zone of Bissau presents greater exposure to flooding, due to its low altitude. Also, the disorderly anthropogenic occupation of flooded lands, makes these areas more vulnerable in a climate change scenario

Date of Publication
2020-06-01

Institution
FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DE LISBOA

Where published
Comunicações Geológicas

Publication Identifiers
ISSN - 0873948X

Publisher
Laboratorio Nacional de Energia e Geologia

Edition
2020
Volume
107
Number
Especial I

Starting page
109
Last page
113

Keywords
Single-value inundation model TanDEM-X Sentinel 2 mitiga tio n resilience. Single-value inundation model TanDEM-X Sentinel 2 mitigation resilience Digital Elevation Models

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APA
Fandé, MB, Ponte Lira, C., Antunes, C., Penha-Lopes , G., (2020). Quantification and mapping of coastal flooding extension for Bissau, Guinea-Bissau: A climate change scenario perspective [Quantificação e cartografia da extensão de inundação costeira em bissau, guiné-bissau: Perspetiva em cenário de alterações climáticas]. Comunicações Geológicas, 107, 109-113. ISSN 0873948X. eISSN .

IEEE
Fandé, MB, Ponte Lira, C., Antunes, C., Penha-Lopes , G., "Quantification and mapping of coastal flooding extension for Bissau, Guinea-Bissau: A climate change scenario perspective [Quantificação e cartografia da extensão de inundação costeira em bissau, guiné-bissau: Perspetiva em cenário de alterações climáticas]" in Comunicações Geológicas, vol. 107, pp. 109-113, 2020.

BIBTEX
@article{48298, author = {Fandé, MB and Ponte Lira, C. and Antunes, C. and Penha-Lopes , G.}, title = {Quantification and mapping of coastal flooding extension for Bissau, Guinea-Bissau: A climate change scenario perspective [Quantificação e cartografia da extensão de inundação costeira em bissau, guiné-bissau: Perspetiva em cenário de alterações climáticas]}, journal = {Comunicações Geológicas}, year = 2020, pages = {109-113}, volume = 107 }