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On the other hand, 19 years (54.3%) recorded more than the annual average rainfall. The variation in the amount of solar radiation received daily is small throughout the year. WebThis zone has warmer temperature and moderate rainfall. All the given crops show considerably high correlation with belg rainfall. By continuing to use our website, you are agreeing to, Journal of Water, Sanitation & Hygiene for Development, Time series trend analysis of temperature and rainfall in lake Tana Sub-basin, Ethiopia, Potential impact of climate change on rainfed agriculture of a semi-arid basin in Jordan, Distribution of the serial correlation coefficient, Evaluation of indices for characterizing the distribution and concentration of precipitation: a case for the region of Southeastern Anatolia Project, Turkey, Evaluation of climate change impacts and adaptation measures for rice cultivation in Northeast Thailand, Potential impacts of a warming climate on water availability in snow-dominated regions, Rainfall variability and trends in semi-arid Botswana: implications for climate change adaptation policy, Analysis of climate trends in North Carolina (19491998), Detection of hydrologic trends and variability, Adaptation to climate change in Africa: challenges and opportunities identified from Ethiopia, Estimating the impact of climate change on agriculture in low-income countries: household level evidence from the Nile Basin, Ethiopia, Decadal climatic variability, trends, and future scenarios for the North China Plain, Observed monthly precipitation trends in China 19512002, Climate change 2001: the scientific basis. Wondering how to get your business idea off on the right foot in the competitive..Learn More, Are you looking for a digital partner for your agency? 2015). Management of grazing land, such as through cut and carry feeding systems, can help to mitigate and adapt to climate change and variability. The average annual aerial rainfall of the Beressa watershed is 891 mm, with a coefficient variation of 30.6% and standard deviation of 227 mm. In this study, to manage the data quality, data series were plotted in order to identify the outliers. This holds true in both the highlands and lowlands. This study analyses spatiotemporal variability and trends in rainfall and temperature in Alwero watershed, western Ethiopia. Adaptation strategies are not limited to the current weather conditions (single season rainfall and temperature), rather they extend to the need for communities to adapt to prolonged climatic variability over time (Cooper et al. NB: Kiremit: Summer; Belg: Spring; Bega: winter. Explore historical and projected climate data, climate data by sector, impacts, key vulnerabilities and what adaptation measures are being taken. The guidelines for interpretation are presented in Table1. Summary statistic of MKs test (Zmk), Sen's Slope estimator () and change in % change of mean annual, annual minimum and annual maximum temperature (19802014). Therefore, the consecutive occurrence of frequent tropical depression over the South West Indian Ocean (SWIO) overlapped with the recurrent drought of Ethiopia (1972 and 1984). The elevation ranges from 2,747 to 3,674 m a.s.l. Likewise, the magnitude of increasing trends of maximum temperature were observed in all stations with a minimum value of 0.023 C/year in GIN station and a maximum value of 0.21 C/year in ENW station. Assessing the long-term spatiotemporal rainfall distribution pattern is the most significant component in the climate analysis of a given country, more specifically at the local and regional levels where the effect of climate change is worse. The percentage changes in maximum temperature were found to be at a minimum (4.00%) and maximum (37.60%) in the GIN and ENW It is the second largest zone covering more than 26% of the landmass of Ethiopia. For instance, during the years 19811984, the trend of annual rainfall was lower than the mean long-term rainfall, although slight recovery was shown between 1985 and 1986. 
2014). 
The study watershed lies between 39 37E39 32E and 9 40N9 41N. 2013; Irannezhad et al. Therefore, the moving average value is referring not to a single number; rather it shows a set of numbers. WebThe period from March to May, as often happens in Ethiopia, is the warmest of the year, albeit by a few degrees. Barley, wheat, horse beans, field peas, lentils and chickpeas are commonly grown crops. Additionally, studies of rainfall and temperature variations in larger areas would in general be of little use for local level agricultural production (Gebre et al. The rainfall and temperature daily records over 35 years (19802014) for the Beressa watershed were obtained from the National Meteorological Service Agency of Ethiopia from seven stations; hence rainfall on a monthly, seasonal and annual basis were derived from the daily data. 
Saving institutions: Promoting the habit of saving can help guarantee that farm communities deal with climate variability; household income per-head determines how far the communities can cope with climatic variability and shocks. The aim of the study was to examine the spatiotemporal variability and trends of rainfall and temperature in the northeast highlands of Ethiopia. In this season, the effect of the northeast trade wind is very muchreduced. 5.3.2. However, after 1999 and onwards, recovery in the long-term average rainfall emerged higher than the average mean, except for the drier conditions in 2002 and 2013 which were lower than the long-term mean. 5.1 According to Al-Bakri et al. This is probably due to the fluctuation and variability of the seasonal and inter-annual rainfall pattern of the Beressa watershed during the last few decades, as indicated in Table3, which is similar to other studies (Muhire & Ahmed 2015; Zhao et al. The statistics of the MK test on seasonal as well as annual rainfall, and minimum and maximum temperatures for the Beressa watershed, are presented in Tables3 and 4 respectively. The results from the coefficient of variations shown in Table2 revealed that in comparison with the kiremit rainfall season, during the bega and belg seasons rainfall varies considerably more. New technologies.. Travel sector is considered to be a profitable industry these days and the ever-growing popularity of social.. Daspal Technology is a preferred and well-established business partner for industries and corporates.. Therefore, given the prolonged climatic variability of the Beressa watershed, the following coping and adaptation mechanisms are suggested. Tmean, the mean annual temperature; Tmin, minimum annual temperature; Tmax, maximum annual temperature. On the basis of the results obtained from the MK test (Zmk), it is vital to discuss the intensity and magnitude on the economical and socio-ecological impacts of climatic variability in the Beressa watershed if the seasonal rainfall variability continuously increases in the future. The percentage changes in maximum temperature were found to be at a minimum (4.00%) and maximum (37.60%) in the GIN and ENW 2005). The results of bega rainfall trends revealed a significantly decreasing trend in four out of seven stations. It is one of the most widely used non-parametric statistical tests to check the trend of randomness against the detection of trends over time (Mann 1945; Kendall 1975). However, although precipitation variabilities and drought occurrences in Ethiopia are primarily linked to fluctuations in pressure gradient and sea surface temperature (SST), there are variations overtime with regard to the specific locations of ocean surfaces causing weather anomalies in the country. The time series of five years moving average minimum and maximum temperature was analysed for the period 19802014. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, Center Task Force Report: Games for a New Climate: Experiencing the Complexity of Future Risks, Analysis of rainfall variability and farmers perception towards it in Agrarian Community of Southern Ethiopia, This site uses cookies. Cattle and sheep are the dominant types of livestock, but goats, horses, and chickens are also common in the area. The northeasterly winds crossing the Red Seacarry very little moisture and supplies rain only to the Afar lowlands and the Red Sea coastalareas.iv. 
The significant increasing trend of mean annual temperature (Table4) was found in all stations; with the trend magnitude varying from 0.03 to 0.14 C/year respectively. In the tropics, the daily range of temperature is higher and theannual range is small, whereas the reverse is true in the temperate latitudes. Elements and Controls of Weather and Climate, 5.3. The possible reason may be monthly, sub-monthly time scale, temporal and spatial distribution of rainfall and temperature, which are determinant factors of production. According to Griggs & Noguer (2002), Babel et al. Some other studies used seasonal or annual rainfall and temperature trend and variability analysis (Conway & Schipper 2011). 2010; Simane et al. Winter (December, January and February)In winter, the overhead sun is far south of equator. The temperature and rainfall of this category is highly suitable for majority of crops grown in Ethiopia. The annual average temperature of the area is 19.7 C. Following the directness of the Sun inMarch and September around the equator, the ITCZ shifts towards equator. If so, you are the right place. Precipitation projections indicate increased mean precipitation with more frequent extreme rainfall during monsoon season in the EH region, and a wetter cold season in the WH region. As already explained. (2012) found that due to global climate change the eastern part of Africa, including Ethiopia, was drying out. The Physiographic Divisions of Ethiopia, 3.3. 1982; Burn & Elnur 2002; Yue et al. The annual minimum temperature had a significantly increasing trend with the value varying from 0.005 C/year and 1.90% in GIN station to 0.12 C/year and 52.40% in the DBS station. 
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