Exploring the patterns of dry and wet spells: a case study of Ethekwini District Municipality, KwaZulu Natal, South Africa

Abstract

Climate change is characterised by long-term changes in typical weather patterns, which can span from several decades to millions of years. Variations in temperature, precipitation, and other climatic factors are among the variables often used to quantify or qualify climate change. Most scholars recognize droughts and floods as two prominent consequences of climate change. Hence, the utilisation of climate change indicators such as periods of drought and heavy rainfall is of utmost importance. U. This study aimed at assessing patterns of dry and wet spell implications in the Central and Northern regions of eThekwini district municipality using historical climate data (1990–2022) on precipitation and temperatures (maximum and minimum) to determine the frequency, intensity, and duration of dry spells and wet spells. The findings revealed that the Central Region had almost double the rainfall compared to the Northern Region, which is particularly concerning since elevated levels of precipitation during a period of heightened moisture can result in the occurrence of floods, landslides, and an augmented supply of water. Frequent dry spells, indicative of severe drought, primarily affect the Northern region, posing a challenge to communities through water scarcity, agricultural losses, and hunger. Citizens of these areas are projected to be more vulnerable to extreme weather events; therefore, the need for a profound understanding of dry and wet spells and their socio-economic ramifications is evident. As communities worldwide grapple with the consequences of these climatic fluctuations, academic inquiry is essential to providing guidance for effective policy formulation, disaster management, and sustainable development.

Keywords: {'name': 'Wet Spells, Dry Spells, Standardized Precipitation Index, Climate Variability and Ethekwini District Municipality'}

Authors & affiliations

Ntokozo Xaba
Affiliation not supplied

Ajay Kumar Mishra
Affiliation not supplied

Deposited references

Supplied references, not a list of publications citing this article.

Awumbila, M. (2014). Linkages between urbanization, rural-urban migration and poverty, outcomes in Africa. World Migration Report, 2015. Migrants and Cities: New Partnerships to Manage Mobility, Background Paper, December 2014, IOM, Geneva. Available at: www.iom.int/sites/WMR-2015. (Accessed January 9, 2023).

DOI: 10.1088/1755-1315/1071/1/012030

DOI: 10.1016/j.wace.2019.100193

DOI: 10.1146/annurev-environ-102017-030052

DOI: 10.3354/cr026017

Cooperative Governance and Traditional Affairs department (COGTA). (2020). Profile: eThekwini Metro. Available at: https://www.cogta.gov.za/ddm/wp-content/uploads/2020/07/Metro-Profile_Ethekwini.pdf (Accessed August 1, 2023).

Department of Economic Development Tourism and Environmental Affair (DETEA). (2017). Vulnerability Study of the Impacts of Climate Change. Department of Economic Development Tourism and Environmental Affairs: KwaZulu Natal. Available at: https://soer.environment.gov.za/soer/UploadLibraryImages/UploadDocuments/031219093159_2009%20Vulnerability%20Study%20of%20the%20Impacts%20of%20Climate%20Change.pdf (Accessed August 1, 2023).

Department of Economic Development Tourism and Environmental Affair (DETEA). (2017). Vulnerability Study of the Impacts of Climate Change. Department of Economic Development Tourism and Environmental Affairs: KwaZulu Natal. Available at: https://soer.environment.gov.za/soer/UploadLibraryImages/UploadDocuments/031219093159_2009%20Vulnerability%20Study%20of%20the%20Impacts%20of%20Climate%20Change.pdf (Accessed March 24, 2024).

Department of Environmental Affairs (DEA). (2018). South Africa’s Third National Communication under the United Nations Framework Convention on Climate Change. Available at:https://unfccc.int/sites/default/files/resource/South%20African%20TNC%20Report%20%20to%20the%20UNFCCC_31%20Aug.pdf (Accessed March 24, 2024).

eThekwini Municipality. (2022). eThekwini Municipality spatial development framework 2022-2023. eThekwini Municipality, South Africa. Available at: https://parks.durban.gov.za/storage/Documents/DPEM/Documents%20%20Notices/Strategic%20Spatial%20Planning/SDF/SDF%202022%20-%202023/Report/Final%20SDF%202022- (Accessed August 17, 2023).

Food and Agriculture Organization (FAO). (2018) Partnering for sustainable development and resilient communities – South Africa. Available at: http://www.fao.org/3/ax279e/AX279E.pdf (Accessed September 1, 2023).

Gbetibuou G.A. (2009). Understanding Farmers’ perceptions and adaptations to climate change and variability: The case of the Limpopo Basin, South Africa, Discussion Paper. Washington DC: International Food Policy Research Institute.

DOI: 10.1016/B978-0-12-814820-4.00003-1

DOI: 10.17159/wsa/2022.v48.i4.3991

Kundu, P.M., Mathivha, F.I. and Nkunu, T.R. (2015). The use of GIS and remote sensing techniques to evaluate the impact of land use and land cover change on the hydrology of Luvuvhu River Catchment in Limpopo Province. Pretoria: Water Research Commission.

KwaZulu-Natal Provincial Government. (2022). KwaZulu-Natal provides an update on latest storms and floods. Available at: https://www.gov.za/speeches/kwazulu-natal-provides-update-latest-storms-and-floods-23-may-2022-0000 (Accessed September 2, 2023).

DOI: 10.17159/wsa/2021.v47.i2.10913

DOI: 10.1002/joc.6132

DOI: 10.3390/data7080117

DOI: 10.4102/jamba.v11i1.535

Naicker, P. (2018). Climate change projections and public behaviour towards adopting integrated mitigation and adaptation approaches at a household level in Urban areas, the eThekwini municipality, KwaZulu. [dissertation/Master’s thesis]. South Africa: University of KwaZulu-Natal

DOI: 10.3390/atmos11060623

Nkuna, T.R. and Odiyo, J.O. (2016). The relationship between temperature and rainfall variability in the Levubu sub-catchment, South Africa. International Journal of Environmental Science, 1(1), 66-75.Available at https://www.researchgate.net/publication/305260258_The_relationship_between_temperature_and_rainfall_variability_in_the_Levubu_sub-catchment_South_Africa (Accessed November 1, 2024).

DOI: 10.1051/e3sconf/202340001001

DOI: 10.1088/1755-1315/58/1/012043

DOI: 10.1175/JCLI-D-13-00431.1

DOI: 10.1017/CBO9781139177245.006

DOI: 10.2139/ssrn.1289844

Shongwe, M.E. (2007). Performance of recalibration systems of GCM forecasts over southern Africa. [dissertation/Master’s thesis]. South Africa: University of Pretoria.

DOI: 10.1111/gcb.12581

DOI: 10.1029/2005GL022760

Turpie, J., Letley, G., Chyrstal, R., Corbella, S. and Stretch. D. (2017). Enhancing the relationship between urbanization, environmental assets and ecosystem service. Washington: World Bank.

USAID (United States Agency for International Development). (2018). Designing climate change vulnerability assessment, technical resource. Washington (DC): USAID

USAID. (2015). Climate change information fact sheet – South Africa. Available at: https://www.climatelinks.org/sites/default/files/asset/document/South%20Africa%20Climate%20Info%20Fact%20Sheet_FINAL.pdf [Accessed November 3 , 2023].

USAID. (2018). Building urban resilience to climate change – A review of South Africa. Available at: https://www.climatelinks.org/sites/default/files/asset/document/180327_USAIDATLAS_Building%20Urban%20Resilience%20to%20CC_South%20Africa_to%20CL_rev.pdf [Accessed August 23 , 2023].

WBG Climate Change Knowledge Portal (CCKP) (2021) South Africa Water Dashboard. Data Description. Available at:https://climateknowledgeportal.worldbank.org/country/south-africa/climate-sector-water [Accessed August 27, 2023].

WBG Climate Change Knowledge Portal (CCKP) (2021) South Africa. Available at: https://www.climateknowledgeportal.worldbank.org/country/south-africa/climate-data-historical [Accessed August 28, 2023].

World Health Organization (WHO). (2015). Climate and health country profile – South Africa. Available at: https://apps.who.int/iris/bitstream/handle/10665/246153/WHO-FWC-PHE-EPE-15.44-eng.pdf?sequence=1

World Meteorological Organization (WMO). (2012). Standardized precipitation index user guide, WMO-No. 1090. Geneva, Switzerland: World Meteorological Organization

Zhang, X. Gabriele H., Sonia S., Ronald S., Zwiers, F., Lisa A. (2013). WCRP Grand Challenge: Understanding and Predicting Weather and Climate Extremes. Available at: https://www.wcrp-climate.org/images/documents/grand_challenges/GC_Extremes_v2.pdf [Accessed October 14, 2023].

DOI: 10.1007/978-94-007-6692-1_13