In Nigeria, studies on rainfall and their implication for flood frequency have been restricted to the southern parts of Nigeria, little or no attempt has been made in the literature to study the implication of recent changes in rainfall pattern on flood frequency in northern Nigeria despite increase frequency of floods in this region, and this is where this study derives its relevance. characterized rain day patterns, with the highest rain day period in 1999 and lowest in 1987. A large amount of work has already been carried out by many countries on assessing impacts and vulnerabilities to climate change, as well as considering possible adaptation options. Keyword: Rainfall, Niger delta, Rainfall pattern Rainfall variation, Coefficient of Rainfall Variation I. Landissuesarea!leading!causeofconflict!in! 0000016621 00000 n This research aimed to examine the trend of rainfall in Akure using 50 years rainfall data. Average rainfall along the coast varies from about 180 cm (70 in) in the west to about 430 cm (170 inch) in certain parts of the east. It provides suitable conditions for many types of ecosystems, as well as water for hydroelectric power plants and crop irrigation. The present study attempts to examine recent changes in rainfall pattern and its implication on flood frequency in a seasonally flooded town of Makurdi, northern Nigeria. The paper is designed to study the rainfall patterns and its implications in Nigeria. 0000002997 00000 n The importance of the knowledge of rainfall pattern has necessitated many researchers to carryout studies on the subject. The Niger Delta is located in the southern part of Nigeria. This present study analyzes the rainfall trends and temperature patterns in the zone in order to determine the current climatic trends. Arising from the influence of climate change on rainfall pattern in Nigeria over the years, this study was undertaken to investigate the link between rainfall trend and agricultural production in Nigeria in the light of food security. The variability of rainfall and the pattern of extreme high or low precipitation are very important for agriculture as well as the economy of the state. In the central area, where the rainy season is longer, the sunshine hours decrease for a longer period. Rainfall is concentrated in the period June-September. Epochal patterns of Indian summer monsoon rainfall It is well known that Indian summer monsoon rainfall displays multi-decadal variations in which there is a clustering of wet or dry anomalies (Pant and Kumar, 1997). The explosion of data in the information age has provided an opportunity to explore the possibility of characterizing the climate patterns using data mining techniques. This seasonal variation of rainfall is the focus of this research. Article can not be downloaded. Rainfall is the most important natural factor that determines the agricultural production in Nigeria, particularly in the South western part of Nigeria. Academia.edu no longer supports Internet Explorer. Ekpoh and Rainfall in nigeria pdf Rainfall in Nigeria is characterized by both latitudinal and longitudinal variations. In this paper, Standard Precipitation Index (SPI) and Coefficient of Variability statistical tools �h�Yd) �d�```qk 25@���P4��\ F�[@Z����*1�p Given this scenario, the 2011 rainfall in Nigeria is likely. The hot Harmattan wind from the Sahara sweeps across the northeastern areas which. MATERIALS AND METHODS Akure is the capital of Ondo State (Figure 4), Nigeria and the major dominating town of Akure South Local Government. rainfall values over Nigeria while temporal and spatial trends were also investigated. startxref Here is the average rainfall. 0000010138 00000 n O. J. Olaniran. Rainfall data from twenty Nigeria stations, Sea Surface Temperature.tremendous crop failure whenever there are significant changes in rainfall pattern. Climate change is perhaps the most serious environmental threat to the fight against hunger, malnutrition, disease and poverty in Africa, mainly through its impact on agricultural productivity. 10! Nigeria is a country in West Africa. To examine the epochs of above and below normal rainfall, 31-year running This study was checked annual average ... rainfall in northern Nigeria for the years 1951-1975. 0000003818 00000 n Drought or dry spells at the beginning or end of the season had a constant reoccurrence decimal since the beginning of the 20th century. For instance, Ifabiyi et al.,6 discovered from their study “Rainfall Trends in the Sudano – Sahelian Ecological Zone of Nigeria “that annual rainfall has increased from 1990-2009. Rainfall Pattern in Nigeria It is a common believe that all water on the earth comes from the rain and stored as surface water such as rivers, ponds, oasis, or underground water as spring and water table etc. rainfall series over these regions depict major climatic discontinuity. Inland, it decreases to around 130 cm (50 inch) over most of central Nigeria and only 50 cm (20 inch) in the extreme north. Fig.1.1 Nigeria Population Structure, 2016 2 Fig.1.2 Nigeria Demography – by State and Sex. 3, Adeyemo. Department of Geography, University of Ilorin, Ilorin, Nigeria ... View the article PDF and any associated supplements and figures for a period of 48 hours. It has long been a topic of interest in the fields of meteorology in establishing a probability distribution that provides a good fit to daily rainfall. This study examines the length of the growing season in Nigeria using the daily rainfall data of Ikeja, Ondo, Ilorin, Kaduna and Kano. distribution of rainfall, climate pattern and hyrdogeological units from the coastal areas to the Sahel regions of Nigeria provide a framework for the identification of the threats in terms of quantity and quality. Deficiency in total annual precipitation is a problem in parts of the country, particularly in the northern parts. 31 24 Nigeria GeoGraphy, climate aNd populatioN Nigeria is located in the tropical zone of West Africa between latitudes 4°N and 14°N ... almost all year round, rainfall patterns are marked by distinct wet and dry seasons. Article can not be printed. Statistical approach was deployed to determine the confidence levels, coefficients of kurtosis, skewness and coefficient of variations. ANALYSIS Of RAINfALL PATTERN NVIRONMENT AND fLOOD INCIDENCES IN wARRI METROPOLIS, NIGERIA Rhoda Olanrewaju 1, Buku Ekiotuasinghan , Godwin Akpan1* 1Department of … The paper is designed to study the rainfall patterns and its implications in Nigeria. He has found that the date of start of the growing season is occurred It also shares a border with the self-declared, but internationally unrecognized state of Ambazonia in the southeast. Rainfall is one of the climatic factors that can indicate climate change. It decreases from the south to the north, the rainfall comes late and not evenly spread across the rainy season and consequently has adverse effect on agricultural activities (Iloeje, 1981). S.A. 4 1,2&3. The rain-day series in Nigeria have been examined for periodicities, fluctuations and trends for four regions arranged from south to north (the Coastal, Guinea-Savanna, Midland and Sahelian zones) based on data collected for the period 1919–1985. Its coast lies on the Gulf of Guinea in the south and it borders Lake Chad to the northeast. Over northern Nigeria, rainfall was observed to decrease in an irregular pattern which intensified over time from 1921 to 2000 (Olaniran, 2002). considers the changing pattern of rain-days in Nigeria between 1919-1985, Omogbai (2010) studies rain days in South Western Nigeria between 1970-2006, Guhathakurta and Rajeevan (2006) study the trends in the rainfall pattern over India between 1901-2003, Obot et al., (2011) also consider the trends of rainfall in Abeokuta, Nigeria between 1981-2002 etc. Current Journal of Applied Science and Technology, 2019, Rainfall Dynamics and Climate Change in Kano, Nigeria, Simulation of Meteorological Drought of Bankura District, West Bengal: Comparative Study between Exponential Smoothing and Machine Learning Procedures, Developing a regional drought climatology for the Czech Republic, Drought Analysis in Ceyhan Basin Using Standardized Precipitation Index, Comparative analyses of SPI and SPEI as drought assessment tools in Tigray Region, Northern Ethiopia. Nigeria are farmers and rainfall is the major source of water for growing of crops. annual rainfall distribution while the output of yam between1992 and1996followed the pattern of rainfall distribution but from 1997 to 2009the outputs of yam do not follow the, trend again. Nigerian agriculture is mainly rain-fed and basically dependent on the vagaries of weather especially rainfall. The study examines rainfall characteristics in Warri metropolis for the past 30 years (1986-2015). rainfall years are in both the modelling and the validation periods. Internatinal Journal of Climatology, 10: 810-848. 0000003487 00000 n of2013. This paper is premised on the hypothesis that the amount of rainfall in Nigeria decreases with increasing distance from the coastal areas to the north semi arid lands. Rainfall in the Nigerian Sudano –Sahelian region is characterized by considerable fluctuations and periods of diminishing annual totals especially in recent years. Considering the importance of water to a developing nation like Nigeria, and in line with the MDGs number 7, the issues to be addressed Given this scenario, the 2011 rainfall in Nigeria is likely. While there is a general decrease in rainfall in Nigeria, the coastal area is experiencing slight increase. For example, Adefolalu (1986) examines trends in rainfall pattern using 70-year period (1911–1980) rainfall data from 28 meteorological stations. He employed univariate Box-Jenkins method to analyze rainfall in the region and found that SARIMA model is suitable for forecasting future value of monthly rainfall and temperature data and used this model to forecast 12-month rainfall pattern in the study area. The riverine area of the Niger Delta is a coastal belt of swamps bordering the Atlantic ocean.The swamps are vegetated tidal flats formed by a reticulate pattern of interconnected meandering creeks and tributaries of the Niger River. Based on weather reports collected during 2005–2015. The The . ABSTRACT - Analyses of radiation and rainfall pattern was designed to study the relationship between rainfall and radiation in Kano {latitude 12. 0000001042 00000 n Climate data and weather averages in Ibadan. Article/chapter can be printed. xref Department of Agricultural Technology, Oyo State College of Agriculture Igboora, Oyo State tnakinniran@lautech.edu.ng. Unlimited viewing of the article/chapter PDF and any associated supplements and figures. trailer The paper is designed to study the rainfall patterns and its implications in Nigeria. This study examines the length of the growing season in Nigeria using the daily rainfall data of Ikeja, Ondo, Ilorin, Kaduna and Kano. 0000011679 00000 n Annual Weather Averages Near Ibadan. Lower rainfall in the north, for example, reduces the availability of trees and biomass for Sorry, preview is currently unavailable. Due to global warming precipitation amount, type and timing are changing or are expected to change because of increased evaporation, especially in the tropics (Ritter, 2006). A., 3UDOLISA, R. E. K. AND 3A. These features are that of seasonality, long range dependency of observations and time trend as observed in the climatological series. This has taken a more pronounced dimension due to climate change. It decreases from the south to the north, the rainfall comes late and not evenly spread across the rainy season and consequently has adverse effect on agricultural activities (Iloeje, 1981). Annual rainfall totals, growing season rainfall totals and annual raindays of 27 Nigerian meteorological stations with varying lengths of records from 1903 to 2012 were collected from the Nigerian Meteorological Agency (NIMET). In Nigeria, the climate is tropical, semi-arid in the far north, and progressively rainier as you move southward. To browse Academia.edu and the wider internet faster and more securely, please take a few seconds to upgrade your browser. climate change, many scholars have engaged in studying various element of climate to understand the present pattern and characteristic of climate. <<92E48517542E1A49B505966816E622E0>]>> This paper examined rainfall pattern and its variability in northeastern Nigeria and its impacts on access to water supply. The . 0. This belief widely held in some circles does not really follow this pattern due to other climatic factors. This has taken a more pronounced dimension due to climate change. The Nigeria. This suggests some 0000013952 00000 n Nigeria and it is the grain belt of the country populated by small scale subsistence farmers and nomadic livestock herders. FSN-FM 0005 EFFECT OF RAINFALL PATTERN ON FISH PRODUCTION IN OGUN STATE, NIGERIA 1OLAOYE, O. J., 2AKINTAYO, I. The study In addition, daily rainfall amounts for each of the chosen years were collected in order to determine the onset and cessation dates of rainfall, the dates of first precipitation (of 1.0 mm and 10.0 mm), and the monthly as well as the annual rainfall … Ile-Ife: Obafemi Awolowo University. I am happy to note that just like in 2016, when the national HDR focused on ‘Human Security and Human Development in Nigeria’ and underlined the imperative of Human Security across the board, the focus of this Report on Nigeria’s North East is equally timely. Averages are for Ibadan Airport, which is 4 miles from Ibadan. Annual Weather Averages in Port Harcourt. 0000005230 00000 n 3 Fig.1.3 Map of Nigeria Showing the Location of the North-East Region 4 Fig.1.4 North East Nigeria showing the six states 6 Fig.1.5 Adamawa State showing the 21 LGAs 7 Fig.1.6 Bauchi State showing the 20 LGAs 8 Fig.1.7 Borno State showing the 27 LGAs 9 Introduction The Niger Delta region is situated at the apex of the Gulf of Guinea on the west coast of Africa and on the Nigeria‟s South–South geopolitical zone. The rain-day series in Nigeria have been examined for periodicities, fluctuations and trends for four regions arranged from south to north (the Coastal, Guinea-Savanna, Midland and Sahelian zones) based on data collected for the period 1919–1985. Article/chapter can be downloaded. 0000001444 00000 n Keywords: Nigeria, Southern, Rainfall, Normal distribution, Probability distribution, and Regression. �)� On the Annual and Seasonal Pattern of Rainfall Fluctuations in Sub-Saharan West Africa. 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