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Which planetary wind pattern is . Basin elevations range from sea level to 920 m above sea level, with a mean elevation of 257 m and correspondingly low channel grades. Mean annual rainfall 1981-2014, with number of months of 50 mm or more of rainfall. the impacts of climate variability on livelihoods of fisher folk at yeji. Analysis of rainfall indices shows that mean annual rainfall in the growing season of Ghana's major staple crops is characterised by high interannual variability of rainfall at the national scale (Figure 2). It is part of the GLOWA Volta Project that studies the "Sustainable Water Use under Profile of temperature and rainfall patterns in Ghana from ... Anomalies from the rainfall series were correlated with sea surface temperature (SST) The vulnerability of Ghana's agriculture to climate change is largely due to its over dependence on rainfall [Yaro, 2010]. PDF Spatio-temporal Rainfall Patterns in Northern Ghana Impact of climate variability on pineapple production in Ghana Crop. Related to global warming, changes in rainfall patterns directly or indirectly affects various . Background: Climate variations have a considerable impact on crop production. In this group, rainfall indices are high and not very variable. The Finance Minister, Ken Ofori-Atta, has announced government's intention to roll out an official strategy as part of Ghana's effort to combat climate change. We pose this question in the light of research findings from 2011, revealing that most seasonal migration tookplaceduringtherainyseason,indicatingashiftintem- The aims of this study were to assess the impact of current . The rainfall pattern in the northern savanna area is uni-modal whilst in the forest and forest- . According to Köppen and Geiger, this climate is classified as BSh. June 29, 2021. General pattern In West Africa this rainfall gradient extends over a remarkable short distance, including the Upper Niger Basin and Inner Niger Delta. Climate - Ghana Average weather, temperature, rainfall, when to go, what to pack In Ghana, the climate is tropical, with a dry season in winter and a rainy season in summer due to the African monsoon. The climate of Ghana is tropical and there are two main seasons: the wet and the dry seasons. The sub-objectives of the report are three-fold; 1, to modeling the rainfall pattern in south eastern coast of Ghana using Markov chain analysis, 2, to determine the positions of rainy or dry seasons within Ascending warm and moist air immediately north and south of the equator is sucked into the itcz and transported at altitudes of 10-15 km further . Monthly rainfall between 1926 and 1985 from 17 synoptic stations in Ghana were averaged over four major zones of the country. Acheampong (1988) a month considered "wet" has 102 m m of rainfall and the total rainfall. The sample include January to September . Therefore, Ghana joined the comity of nations to initiate efforts to collectively deal with it on a Temporal variation of rainfall in four selected stations is depicted in Figure 4. The primary aim for this paper is to examine the pattern of rainfall in the western region of Ghana. 37 Full PDFs related to this paper. In a year, the rainfall is 748 mm | 29.4 inch. Also, the study seeks to forecast rainfall figures. No very definite lines of demarcation exist, as they are a consequence of the north and south movement of the ITCZ and its associated weather zones. Download High Resolution. A bi-modal pattern is observed with peaks in May-June and October (Figure 4.3). Mr. Osafo-Kissi laments, "if the water in the river in Burkina Faso dries up, then basically we don't have any flow into Bui Dam in Ghana." He explained that even though there are different rainfall patterns and seasons in Ghana where the reservoir gets some volumes of water, the dam relies on the inflows from neighbouring countries. by emmanuel kofi mensah (10281756) this thesis is submitted to the university of ghana, This anomaly could be attributed to seasonal to subseasonal variations. A short summary of this paper.

by: Gmabi Philip, Ghana, West Africa. This paper. West Africa's climate is controlled by the interaction of two air masses, the influence of which varies throughout the year with the north-south movement of the Intertropical Convergence Zone (ITCZ). High variability in the rainfall pattern is expected with more dry days in the basin, which has a total area of 23, 000 square kilometres. Climate is the average pattern of a particular region over time, and can take into account such things as rainfall, temperature, pressure, wind, and humidity.

The net potential effect of severe changes in rainfall pattern is the disruption in crop production leading to food insecurity, joblessness, and poverty. Records of monthly and yearly rainfall were obtained from the headquarters of Ghana Meteorological Department, Accra, for analysis. Pineapple production plays a major role in Ghana, primarily via socioeconomic impacts and the export economy. Climate. Employees now work 34 hours over four days and get Monday or Friday off, when previously . This anomaly could be attributed to seasonal to subseasonal variations. Most of West Africa, from the southern Sahara to the humid coastal countries, has only one rainy season, which lasts from one to six months. The evaluation was carried out at grid points level and the three regions within the north of Ghana where rainfall patterns are similar (Nkrumah et al., 2014). Average (2006-2011) production, harvested area and yield of major food crops in Ghana. The population of Ghana as at March 2000 was 18.4 million which is about triple the 1960 population of 6.7 million (Ghana READ MORE. Upper West Region (UWR) in Ghana, this article seeks to explore how strongly the dry-season migration pattern is pronounced in the context of rainfall variability and food insecurity. A statistically nonsignificant decrease of 15.9% was observed in the rainfall pattern while 2.1% linear increase was recorded for temperature for the same period of . The temperature here averages 26.4 °C | 79.6 °F. Dr Michael Addaney, a lecturer at the School of Geosciences, University of Energy and Natural Resources (UENR), said Africa . Republic of Ghana: Capital: Accra: Area: total: 239,460 sq km land: 230,940 sq km water: 8,520 sq km: Climate: tropical; warm and comparatively dry along southeast coast; hot and humid in southwest; hot and dry in north: Location: Western Africa, bordering the Gulf of Guinea, between Cote d'Ivoire and Togo: Geographic coordinates: 8 00 N, 2 00 . Changing Rainfall Patterns and Livelihoods in Ghana. Therefore, entomological surveys were carried out in the forest-savannah transitional belt of Ghana (Kintampo) from November 2003 to November 2005 in preparation for drug and vaccine trials. Axim (37.8 m above MSL), the wettest rainfall station in Ghana along the western coast, recorded the highest MMR of 500 mm and 230 mm . This paper provides a holistic literature review of climate change and variability in Ghana by examining the impact and projections of climate change and variability in various sectors (agricultural, health and energy) and its implication on ecology, land use, poverty and welfare. Department of Molecular Biology and Biotechnology, School of Biological . The air circulation around the equator is the main driver of the annual rainfall sequence in Africa. Studies carried out on flood Download PDF. June 29, 2021. High variability in the rainfall pattern is expected with more dry days in the basin, which has a total area of 23, 000 square kilometres. 4-5 Rainfall Takoradi and Axim experience rainfall throughout the year. Average rainfall in Ghana is between 1,100 to 2,000 mm/year, but ranges from as little as 890 mm/y ear in the coastal zone near Accra to 2,030 mm/year in the southwestern rainforests. "Statistical analysis over the years shows that . Yield (t ha -1) Harvested Area (ha) Total Production (t) Cassava. The erratic rainfall pattern in the country is directly affecting the electricity supply in Ghana. Besides, high variability in the rainfall pattern was also expected with more dry days in the basin, the scientists observed, after a study of the rainfall variability, which assessed the continuous rainy and dry days and the atmospheric conditions responsible for rainfall at the Pra catchment over the last 40 years. Ghana like many African countries had and continues to experience its fair share of the impacts of climate change manifested in extreme temperatures and unpredictable rainfall patterns. READ MORE. Rainfall data from 77 stations were analysed to determine the mean annual and interdecadal rainfall variability and distribution in Ghana for the period 1981-2010. The rainy season lasts from May to September in the north, from April to October in the center, and from April to November in the south. As a major concern to food production in Ghana, this study seeks to show the . This study develops an objective rainfall pattern assessment through Markov chain analysis using daily rainfall data from 1980 to 2010, a period of 30 years, for five cities or towns along the south eastern coastal belt of Ghana; Cape Coast, Accra, Akuse, Akatsi and Keta. As indicated, the rainfall patterns have some similarity to those in the Horn of Africa, with an almost-significant cycle of about 7 years. This study is conducted to analyze small-scale rainfall in the northern region of Ghana. Climate. Climate variations have a considerable impact on crop production. The harmattan, a dry desert wind, blows in north-east Ghana from December to March . Axim (37.8 m above MSL), the wettest rainfall station in Ghana along the western coast, recorded the highest MMR of 500 mm and 230 mm . The region recorded some very wet years in the early 60s, and a run of low rainfall years starting in 1987. Ghana experiences its rainfall season mainly from April through November [26] which depends on several factors. Download PDF. Prolonged drought worrying - Low food production in 4 regions.

to model rainfall patterns using rainfall data in order to determine the rainy or dry seasons in the selected area under investigation. The study was conducted to establish the rainfall trends in Volta Region and also to provide the evidence of climate change by analyzing available rainfall record for 30-year period of 1981 to 2011.

The actual area cultivated is about 11 400 km2 (4.8% of the total area or 11.4% of the cultivable area). adapt. Delivering the 2022 Agyenkwa . The population has grown at an annual rate of 2.4% since 2000 (Ghana Statistical Service, 2011). decrease is from an average high o f above 140 rainfall events dur ing the period 1960 - 1972 to an average low. The long-term change in surface water availability is very much related to rainfall patterns and increased evaporation [Kundzewicz et al., 2007]. The climate of Ghana is tropical, but temperatures vary with season and elevation. The basin drains 70 percent of Ghana, which occupies 42 percent of the basin. Impacts of Changing Climate on Maize Production in the Transitional Zone of Ghana.

Dr Emmanuel Tachie-Obeng, the National Focal Person on Climate Change Education and Awareness, Environmental Protection Agency (EPA), on Wednesday said the country's rainfall pattern has changed and become unpredictable over the past 30 years. on Rainfall pattern has changed in Ghana - EPA. Pineapple production plays a major role in Ghana, primarily via socioeconomic impacts and the export economy. For example, a study carried out in Ethiopia re-vealed an association of malaria with rainfall and minimum temperature, the strength of which varied with alti-tude [8]. The online bank Atom Bank has introduced a four-day work week for its 430 staff without cutting their pay.

One such factor is the phase of El Niño-Southern Oscillation (ENSO), namely, El Niño and La Nina. North Ghana experiences its rainy season from April to mid-October while South Ghana experiences its rainy season from March to mid-November. Move to higher grounds - GMet warns of more rains. Ghana constructed the Akosombo Dam (completed in 1965) in a gorge where the Volta cuts through the Akwapim-Togo Range, creating the world's largest artificial lake, Lake Volta. 4.2. The. The predicted rainfall pattern in the first decade (2010-2029) in Figure 4 revealed that the year 2024 will record the highest average annual rainfall of 131.55 mm with the lowest value of 77.78 mm also in the year 2011. CLIMATE SUMMARY Ghana has a tropical climate that follows the country's varied topography. Ghana to study the trend in the rainfall pattern over the period from 1960 to 2005, while [11] used RCMs mod-els to study the spatial pattern of rainfall over Ghana. Daniel S. Agyirifo and Emmanuel P. Otwe. The study, which spanned four years, also cited . 4.2 PHYSICAL FEATURES: GEOGRAPHY, WATER, CLIMATE, SOILS The Volta River Basin occupies 417 382 km2 in six countries (Figure 46). of below 100 from 2003 to 2013 except in 2010 w here 129 rainfall events .

Main objectives are the descriptions of observed rainfall patterns and their identification into existent precipitation types within the surveyed region. Bimodal rainfall pattern within Southern Ghana: six and eleven stations along the coast (a) and over the middle sector (b), respectively. PDF Proposed Seasonal Autoregressive Integrated Moving Average ... For pineapple, variable temperatures and rainfall patterns are implicated, yet there is limited knowledge of the conditions and consequences of such variations. Climate Network (GHCN) covering Ghana, Benin, Burkina Faso, Côte d'Ivoire and Togo to demonstrate the spatial extent of the declining rainfall pattern. lies above the potential evaporation. The tropical climate of Ghana is relatively mild for its latitude. Climate | Free Full-Text | Climate Change and Variability ... The three-dimensional causes of flooding in Accra, Ghana Meteorologist warns of heavy rainfall in coming months. Climatology | Ghana Meteorological Agency The findings suggest that there is a projected high temperature and low rainfall in the years 2020, 2050 and 2080 .

Subsistence farming is predominant (nearly 90%) which relies on rainfall with . ResearchArticle Impact of Rainfall Variability on Crop Production within the Worobong Ecological Area of Fanteakwa District, Ghana ConradKyei-Mensah,1 . Rosina Kyerematen. There were several reported cases between 2000 and 2011 of power rationing as a result of the low Akosombo dam levels [27,28]. Axim, however, records twice as much precipitation as Takoradi during the peak periods. The effect is much felt in rainfall variability because of the country over reliance on rainfall for agriculture. The perceived and actual causes of flood hazards in cities of sub-Saharan African countries have come under tremendous debate. Rainfall: The principal feature of rainfall in Ghana is its seasonal character and its variability from year to year. Data was obtained from the Ghana Meteorological Agency. was adequate for forecasting the rainfall data. Four types of rainfall are recognized, although adjacent types shade into one another. Annual rainfall ranges from 1100 mm in the north to about 2100 mm in the southwest. Understanding the decadal and/or annual variability and distributions of rainfall of a region is important and useful especially for agricultural activities. Download Full PDF Package. The main objective of this paper is to examine rainfall pattern over time, from 1974 to 2010, in Ashanti region of Ghana. July 15, 2021. Climate change in Ghana is one of the defining environmental challenges of our time as recurrent extreme weather issues such as droughts and floods are having a devastating effect on most economic, social and environmental systems. The reductions at six of Two major rainfall periods can be identified: an excess period from 1900 to 1970, where the estimated Lamb rainfall indices are generally . December 4, 2009 at 03:17 Leave a comment. Accra is influenced by the local steppe climate. The mean seasonal rainfall patterns over Ghana are shown in Figure 6. Based on the differences in vegetation, rainfall and temperature patterns recorded over the years, the northern regions (Northern, Upper East and Upper West) of Ghana constitute the Guinea savannah zone while the central regions (Ashanti, Brong-Ahafo, Eastern and mid-Volta) constitute the Transitional forest zone.

The predicted annual rainfall illustrated a rise of 18.00 mm We analysed mean biases for each of . Bimodal rainfall pattern within Southern Ghana: six and eleven stations along the coast (a) and over the middle sector (b), respectively. Figure 4 and Figure 5 have a bi-modal rainfall distribution with almost equal amount of rainfall at both peaks, which is typical of rainfall pattern in the middle belt of Ghana .

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