Mechanisms for the wet and dry years over Eritrea during the summer rainfall season

Simple item page
dc.contributor.advisorRouault, Mathieuen_ZA
dc.contributor.advisorBrundrit, Geoffen_ZA
dc.contributor.authorKidanemariam, Mussie Ten_ZA
dc.date.accessioned2014-09-08T09:58:37Z
dc.date.available2014-09-08T09:58:37Z
dc.date.issued2003en_ZA
dc.descriptionBibliography: leaves 54-57.en_ZA
dc.description.abstractThe economy of Eritrea depends on rain-fed agriculture, which is highly sensitive to seasonal and inter-annual variations of rainfall. Adequate amount of rainfall is required every year for adequate agricultural production and drinking water. Therefore, the distribution of seasonal rainfall in space and time is critical to the country's economy. Drought has great influence on the socio-economic aspect and livelihood of the rural population. Drought occurs in Eritrea due to anomalous regional atmospheric circulation. This study focuses on the summer rainy season of June, July and August (JJA). It examines atmospheric and oceanographic mechanism patterns associated to summer rainfall anomalies. The investigation mainly concentrates on wet and dry spells that occurred over Eritrea during the rainy seasons (June to August) of 1950's-1990's. Rainfall data was available from the Climatic Research Unit (CRU) Hulme dataset for a period of 1950 -1996 and this together with rainfall data from the Africa Data Dissemination Service was used to determine the characteristics of wet and dry spells. Finally, NCEP-NCAR reanalysis climate data was used to analyse the atmospheric circulation associated with wet and dry years. It has been found that the pattern of the SST along the eastern Pacific and the Indian oceans seem to influence the occurrence of the anomaly rainfall years. Correlation analysis shows that Eritrean summer rainfall is more strongly correlated with the eastern Pacific and Indian Oceans SST. Thus, the drought records in Eritrea are mainly associated with EI Nino events.en_ZA
dc.identifier.apacitationKidanemariam, M. T. (2003). <i>Mechanisms for the wet and dry years over Eritrea during the summer rainfall season</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Oceanography. Retrieved from http://hdl.handle.net/11427/6978en_ZA
dc.identifier.chicagocitationKidanemariam, Mussie T. <i>"Mechanisms for the wet and dry years over Eritrea during the summer rainfall season."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Oceanography, 2003. http://hdl.handle.net/11427/6978en_ZA
dc.identifier.citationKidanemariam, M. 2003. Mechanisms for the wet and dry years over Eritrea during the summer rainfall season. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Kidanemariam, Mussie T AB - The economy of Eritrea depends on rain-fed agriculture, which is highly sensitive to seasonal and inter-annual variations of rainfall. Adequate amount of rainfall is required every year for adequate agricultural production and drinking water. Therefore, the distribution of seasonal rainfall in space and time is critical to the country's economy. Drought has great influence on the socio-economic aspect and livelihood of the rural population. Drought occurs in Eritrea due to anomalous regional atmospheric circulation. This study focuses on the summer rainy season of June, July and August (JJA). It examines atmospheric and oceanographic mechanism patterns associated to summer rainfall anomalies. The investigation mainly concentrates on wet and dry spells that occurred over Eritrea during the rainy seasons (June to August) of 1950's-1990's. Rainfall data was available from the Climatic Research Unit (CRU) Hulme dataset for a period of 1950 -1996 and this together with rainfall data from the Africa Data Dissemination Service was used to determine the characteristics of wet and dry spells. Finally, NCEP-NCAR reanalysis climate data was used to analyse the atmospheric circulation associated with wet and dry years. It has been found that the pattern of the SST along the eastern Pacific and the Indian oceans seem to influence the occurrence of the anomaly rainfall years. Correlation analysis shows that Eritrean summer rainfall is more strongly correlated with the eastern Pacific and Indian Oceans SST. Thus, the drought records in Eritrea are mainly associated with EI Nino events. DA - 2003 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2003 T1 - Mechanisms for the wet and dry years over Eritrea during the summer rainfall season TI - Mechanisms for the wet and dry years over Eritrea during the summer rainfall season UR - http://hdl.handle.net/11427/6978 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/6978
dc.identifier.vancouvercitationKidanemariam MT. Mechanisms for the wet and dry years over Eritrea during the summer rainfall season. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Oceanography, 2003 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/6978en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Oceanographyen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherApplied Marine Scienceen_ZA
dc.titleMechanisms for the wet and dry years over Eritrea during the summer rainfall seasonen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
thesis_sci_2003_kidanemariam_mt.pdf
Size:
13.34 MB
Format:
Adobe Portable Document Format
Description:
Download
Collections
Masters