TREND ANALYSIS OF TEMPERATURE AND PRECIPITATION USING SATELLITE DATA OVER AWI ZONE,ETHIOPIA

Addisu, Ayele

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dc.contributor.author	Addisu, Ayele
dc.date.accessioned	2019-09-26T05:33:34Z
dc.date.available	2019-09-26T05:33:34Z
dc.date.issued	2019-09-26
dc.identifier.uri	http://hdl.handle.net/123456789/9768
dc.description.abstract	ABSTRACT Temperature and precipitation variations have a huge environmental, social and economic impact. Due to lack of ground based data, the researcher uses satellite data of TRMM form 1998-2018 and ARISdata from 2002-2018 to assess trends of temperature and precipitation over Awi zone located in 10°23'N and 10°85'N latitudes and 36°35'E and 36°57'E longitudes. In this study we applied descriptive statistical methods; linear regression, linear correlation and standard anomaly index(SAI) which is supplemented by Mann-Kendall test(MK). The results indicate that the mean monthly values of temperature and precipitation are showing decreasing trend which was statistically insignificant. The study area seems had bimodal precipitation nature. Except spring season, other seasons and annual precipitation trends over the study area seems had negative trend of statistically insignificant with the rate of 0.007,0.005,0.003 and 0.002.Both MK test and SAI shows the study area had normal precipitation pattern in the time scale and statistically insignificant change. The results of monthly temperature trend shows decreased except July and September. Seasonal temperature trend seems statistically significant at spring and winter, whereas statistically insignificant at summer and Autumn. Spring, which had statistically significant negative trend decreases with the rate of 0.134 o c/year. This may be the effect of positive trend of precipitation at a spring season over the study area. The annual temperature had statistically significant negative trend at confidence level of 0.05. In the correlation analysis among seasons, spring season the most correlated negatively with temperature and precipitation (-0.80).In general, the annual correlation analysis between temperature and precipitation had negative (-0.39).	en_US
dc.language.iso	en	en_US
dc.subject	physics	en_US
dc.title	TREND ANALYSIS OF TEMPERATURE AND PRECIPITATION USING SATELLITE DATA OVER AWI ZONE,ETHIOPIA	en_US
dc.type	Thesis	en_US