Assessing El Niño-induced drought in Zambia and its effects using earth observation data

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cg.contributor.affiliationInternational Water Management Instituteen_US
cg.contributor.donorLeona M. and Harry B. Helmsley Charitable Trusten_US
cg.coverage.countryZambiaen_US
cg.coverage.iso3166-alpha2ZMen_US
cg.coverage.regionSouthern Africaen_US
cg.creator.identifierSurajit Ghosh: 0000-0002-3928-2135en_US
cg.creator.identifierAvinandan Taron: 0000-0001-6512-482Xen_US
cg.identifier.doihttps://doi.org/10.1007/s11069-024-06976-5en_US
cg.identifier.iwmilibraryH053195en_US
cg.identifier.projectIWMI - D-0305en_US
cg.isijournalISI Journalen_US
cg.issn1573-0840en_US
cg.journalNatural Hazardsen_US
cg.reviewStatusPeer Reviewen_US
dc.contributor.authorGhosh, Surajiten_US
dc.contributor.authorKour, Snehaen_US
dc.contributor.authorTaron, Avinandanen_US
dc.contributor.authorKaywala, Karynen_US
dc.contributor.authorRajakaruna, Punsisien_US
dc.date.accessioned2024-10-31T21:04:22Zen_US
dc.date.available2024-10-31T21:04:22Zen_US
dc.identifier.urihttps://hdl.handle.net/10568/158362en_US
dc.titleAssessing El Niño-induced drought in Zambia and its effects using earth observation dataen_US
dcterms.abstractSouthern Africa faces significant impacts of El Niño primarily in the form of droughts. Zambia is not an exception. Standardized Precipitation Index (SPI), rainfall anomaly and Vegetation Condition Index (VCI) are robust indicators for drought studies due to their distinct and complementary roles. Our results reveal severe meteorological drought conditions in Zambia using SPI and rainfall anomaly. VCI values have declined in the cropping season due to vegetation stress induced by water deficit conditions. Low rainfall leads to widespread deterioration of crop production, with approximately 40.46% of the country experiencing drought conditions in 2023–2024. The Central, Eastern, Southern, Lusaka, and Copperbelt provinces showed lower VCI values in March and April 2024, indicating poor crop health and drought-like conditions. On the other hand, low rainfall has substantially influenced hydropower reservoirs. Significant surface water loss is observed in the hydropower reservoirs such as Itezhi Tezhi Dam (117.40 sq. km), Mita Hills Dam (25.72 sq. km) and in parts of Lake Kariba (58.72 sq. km) between December 2023 and April 2024. This loss has disrupted industries relying on water resources and hindered hydropower generation, leaving substantial portions of the population without electricity for extended periods. The present study aims to explore the power of open access Earth Observation data and cloud analytics to evaluate the extent and multi-sectoral impact of the recent drought in Zambia. Results highlight the upcoming challenges the country might face in food and nutrition and the critical need for stakeholder involvement and policy design to mitigate future crises and strengthen vulnerable communities.en_US
dcterms.accessRightsLimited Accessen_US
dcterms.available2024-10-25en_US
dcterms.bibliographicCitationGhosh, Surajit; Kour, Sneha; Taron, Avinandan; Kaywala, Karyn; Rajakaruna, Punsisi. 2024. Assessing El Niño-induced drought in Zambia and its effects using earth observation data. Natural Hazards, 26p. (Online first). [doi: https://doi.org/10.1007/s11069-024-06976-5]en_US
dcterms.extent26p. (Online first)en_US
dcterms.issued2024-10en_US
dcterms.languageenen_US
dcterms.licenseCopyrighted; all rights reserveden_US
dcterms.publisherSpringeren_US
dcterms.subjectEl Niñoen_US
dcterms.subjectdroughten_US
dcterms.subjectassessmenten_US
dcterms.subjecthydropoweren_US
dcterms.subjectsatellite observationen_US
dcterms.subjectrainfallen_US
dcterms.subjectprecipitationen_US
dcterms.subjectdry spellsen_US
dcterms.subjectvegetation indexen_US
dcterms.subjectvulnerabilityen_US
dcterms.subjectstakeholdersen_US
dcterms.subjectpoliciesen_US
dcterms.typeJournal Articleen_US

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