ANALYSI SO FTH EVARIABILIT YO FRAINFAL L  DISTRIBUTIO NAN DEVAPOTRANISPIRATIO NOVE REASTER N

dc.contributor.author	BANCHIAMLA KKEBED E
dc.date.accessioned	2017-02-08T11:41:12Z
dc.date.available	2017-02-08T11:41:12Z
dc.date.issued	2009-07
dc.identifier.uri	http://hdl.handle.net/123456789/442
dc.description.abstract	Rainfallvariabilityanalysiswasconductedi nEasternAmharaRegion,whichisoneo f themostdrought-hitregionso fEthiopia.Onthisregions ofarnoattempthasbeen undertakentoanalyzethespatialandtemporalvariabilityo frainfalli nrelationwith evapotranspiration.Toconducttheanalysis,rainfallcanbedirectlymeasured,whereas evapotranspirationisestimatedfromweatherdatausingFAOPenman-Monteithmethod forfirstclassstationsandusingThomthwaitemethodwheretheavailabilityo fdatais limited . Theinterannualpatternanalysiso fmonthlyrainfalldistributionwereplotted&markedto definetheseason swelloverthestudyarea.Temporalvariationo fannualrainfallwas analyzedusingvariabilityindicesandstaticalparameters.Investigationo fseasonaland annualrainfallvariabilityusingdifferentmethodsrevealsthatthereisspatialvariabilityo f rainfalli nthestudyarea.Spatialanalysisshowedthattheentireregioncanbeclassified intothreehomogeaeouszonesdependingupontheirmoistureavailabilityindex. Monthlyrainfallandevapotranspirationwereplottedandcomparedi nordertodetemiine moisturedeficitperiodsforseveralstationsi nthestudyareaandresultsshowedthatthe variabilityo fETo'relativelytorainfallwaslo wwithtimewhileyear-to-yearrainfall variabilitywasveryhigh.Similarlythespatialintegrationo fpointrainfallshowedhigh variabilitythanETQ. Randommodelsthatestimateseasonal&annualrainfalla safunctiono fprobabilityand probabledailyextremerainfallsa safunctiono freturnperiodsaredefined. Theagro-climatezonationo fthemeteorologicalstationwasdeterminedusingUNESCO aridityindex(AI) .A naridityindex(A.I )isanumericalindicatoro fthedegreeo fdryness o ftheclimateatagivenlocation.Thisindicatorservestoidentify,locateordelimit regionsthatsufferfromadeficito fwater.	en_US
dc.language.iso	en	en_US
dc.publisher	Arbaminch university	en_US
dc.subject	EasternAmharaRegion;Rainfallvariability;RAI ;SCDI ;MAI ;CV ;ETQ;probabilit ydistributio n	en_US
dc.title	ANALYSI SO FTH EVARIABILIT YO FRAINFAL L DISTRIBUTIO NAN DEVAPOTRANISPIRATIO NOVE REASTER N	en_US
dc.type	Thesis	en_US