AnomalousCirculationPatternsAssociatedwithWetandDry  RainfallyearsoverEthiopiaduringSummerSeasons

dc.contributor.author	ABAT EGETACHE W
dc.date.accessioned	2017-02-08T12:37:47Z
dc.date.available	2017-02-08T12:37:47Z
dc.date.issued	2009-01
dc.identifier.uri	http://hdl.handle.net/123456789/446
dc.description.abstract	Theeconomyo fEthiopiadependsonrain-fedagriculture,whichishighlysensitiveto seasonalandinterannualvariationso frainfall .Adequateamounto frainfal lisrequired everyyearforadequateagriculturalproductionanddrinkingwater.Therefore,the distributiono fseasonalrainfal li nspaceandtim eiscriticaltothecountry'seconomy. Droughthasgreatinfluenceonthesocio-economicaspectandlivelihoo do ftherural population.Droughtoccursi nEthiopiaduetoanomalousregionalatmosphericcirculation. Thisstudyfocusesonthesummerrain yseasono fJune,July,AugustandSeptember(JJAS, hereafterkiremt).I texaminesatmosphericandoceanographiccirculationpatterns associatedt okiremtrainfal lanomalies. Theinvestigatio nmainlyconcentratesonwetanddryyearsthatoccurredoverEthiopia duringtherainyseasons(JunetoSeptember)o f1970-2004.Monthlytota lRainfalldata obtainedfro mNationalMeteorologicalAgency(NMA )wasusedtodeterminethe characteristicso fwetanddryyears.Finally,NCEP-NCARreanalysisclimatedatawas use dtoanalyzetheatmosphericcirculationassociatedwithwetanddryyears. Itha sbeenfoundthatthepatterno ftheSSTalongtheeasternPacificandtheIndia noceans see mtoinfluencetheoccurrenceo ftheanomalyrainfal lyears.Correlationanalysisshows tha tEthiopiansummerrainfal lismorestronglycorrelatedwiththeeasternPacificand IndianOceansSST.Thus,thedroughtrecordsi nEthiopiaaremainlyassociatedwith ElNinoevents	en_US
dc.language.iso	en	en_US
dc.publisher	Arbaminch university	en_US
dc.title	AnomalousCirculationPatternsAssociatedwithWetandDry RainfallyearsoverEthiopiaduringSummerSeasons	en_US
dc.type	Thesis	en_US