50 mm/24 hr.) These studies have identified and explained the roles of key drivers of variability in West African rainfall such as the Madden Julian Oscillation [24], the movement of the intertropical convergence zone [25, 26], the African Easterly Jet and African Easterly Wave [27, 28], and El Niño-Southern Oscillation [29, 30]. (a) Case A and (b) case B. Advertisement . Possible reasons given for occasional flooding in Ghana include climate variability and change [10, 12] and poor physical planning and flaws in the drainage network [8]. Bimodal rainfall pattern within Southern Ghana: six and eleven stations along the coast (a) and over the middle sector (b), respectively. These convective processes are influenced by the topography, vegetation cover, and water bodies as well as land surface energy fluxes. Tajbakhsh et al. GSMaP satellite products. Two domain configurations for GMET’s WRF model. Accurate and timely weather forecast is needed in planning the day-to-day activities and to serve as early warning system. Dry and Rainy Seasons: North Africa . News Ghana is Ghana's leading online news portal for business in West Africa and around the World. Except in the north two rainy seasons occur, from April to July and from September to November. News. In Ghana, the climate is tropical, with a dry season in winter and a rainy season in summer due to the African monsoon. Part III: the quasi-biweekly zonal dipole,”, W. Ma, W. Huang, Z. Yang, B. Wang, D. Lin, and X. 22.09.20 – Second Measuring Campaign in the Pilot Areas in Accra, Ghana 22/09/2020 After the beginning of the rainy season in Ghana and the resulting filling of the natural rainwater retention basins in the pilot regions of Accra, our partner Envaserv started the second measuring campaign. WMO leads new flood and drought management project for Volta Basin. Accra has dry periods in January, February and December. In addition to the factors identified by Paeth et al. Further studies must be carried out over other areas within the country to determine the 95th threshold for extreme rainfall, especially the flood-prone zones. Copyright © 2020 S. O. Ansah et al. The content of the theses dealt with the development of water balance models for rural and urban regions in Ghana, as well as…, After the beginning of the rainy season in Ghana and the resulting filling of the natural rainwater retention basins in the pilot regions of Accra, our partner Envaserv started the second measuring campaign. It was observed that the thunderstorm thrived under weak synoptic features, even though the moisture was enough for its survival. It is a great challenge for city planners to control and regulate infrastructural activities in the area. Guinea. Flash floods are frequent across the continent resulting from intense localized thunderstorm activity, slow-moving thunderstorms, or squall lines mostly accompanied by lightning [3]. The model’s configuration setup uses Betts–Miller–Janjic’s [38] convective parameterization scheme for both domains with 49 vertical levels. The first episodes of floods caused by heavy rainfall during the major rainy season in 2018 occurred in Accra (5.6°N and 0.17°W), a coastal town, and Kumasi (6.72°N and 1.6°W) in the forest region on the 18th and 28th of June, respectively. You either own one or risk getting drenched this rainy season. Its climate is dominated by the wet and the dry seasons. The heavy rainfall events afford us the opportunity to conduct a unique case study focusing on the meteorological explanation of the causes of the event. The main cause of this triggering is the diurnal heating over higher elevations coupled with the moisture within the atmosphere. With determination and focus, we were able to prepare a Register that recorded seventeen million and twenty-seven thousand, six hundred and forty-one (17,027,641) eligible voters in just 38 days in the rainy season of Ghana. We compared the rainfall amount from this event to the historical rainfall data to investigate possible changes in rainfall intensities over time. In 2012, Nigeria experienced one of the most devastating flooding events ever recorded [7]. By 18 UTC, the St. Helena and Azores center pressures dropped to 1025 hPa and 1029 hPa, respectively, with zonal and meridional expansion of the ET where the country’s pressure was between 1015 hPa and 1010 hPa. The study area and data are described in Section 2. North Africa is part of the northern hemisphere and its seasons follow the same pattern as Europe or North America. This also coincides with the less days with heavy rainfall for Accra using the 95th percentile threshold of 45.10 mm and more days with less heavy rainfall for Kumasi using the 95th percentile threshold of 42.16 mm. Sign up here as a reviewer to help fast-track new submissions. It was observed that an appreciable amount of moisture (RH) above 80% at 850 hPa and the 700 hPa was within the atmosphere indicating saturation for storm formation at the 850 hPa levels (Figure 12). These seasons are modulated by the intertropical boundary (ITB) and the two main high-pressure systems, namely, St. Helena high-pressure system located in the Southern hemisphere and the Azores high-pressure system located over the Atlantic Ocean. Map of study area. At least 18 out of the last 50 years have recorded significant flooding incidences in which lives and properties have been lost [8–11]. However, the major differences between the two sectors are land cover and topography of the area, which have an influence on the rainfall pattern [37]. On behalf of the Electoral Commission of Ghana, I welcome you to a significant moment in our country’s history: The Declaration of the Results of the 2020 Presidential Elections. Floodis a major hazard and source of human vulnerability which can lead to high mortality rate. The potential impact of climate change on precipitation and weather patterns over West Africa has also been extensively studied (e.g., see [19–23]). Accra and Kumasi which are the main focus of this study recorded MMR of 180 mm and 215 mm during the peak of the major season, while the peak of the minor season recorded 60 mm and 170 mm, respectively. The authors declare that there are no conflicts of interest regarding the publication of this paper. Moreover, it was also observed that the weak AEJ (at 12 UTC and 18 UTC) contributed to its weak propagation. The mean ADMR is 86.62 mm with a standard deviation of 22.25, as shown in Figure 9(c), where N is 57, representing the total number of years of data used. The frequency of these extreme rainfall events using the 95th percentile threshold with a value of 45.10 mm and 42.16 mm over the two areas shows a positive slope (Figure 8) of 0.02 (Kumasi) and a negative slope of –0.02 (Accra). Anthropogenic activities such as buildings on water ways and choked drainage systems were responsible for the floods. Accra and Kumasi ARF based on the 95th percentile thresholds of 45.10 and 42.16 mm, respectively. Most rainfall (rainy season) is seen in May and June. Kumasi (286.3 m above MSL) in the middle sector where case B flood occurred has more vegetation cover than Accra (67.7 m above MSL) where case A flood occurred. Home; News; Business; Election Bureau; Coronavirus; Showbiz; No Result Situated just below the Sahara Desert and Sahel, a short rainy season lasts from May to the end of October, bringing the promise of crop cultivation and harvest. WRF skew-T diagram showing atmospheric dynamics for case B (a) at 12 UTC and (b) at 18 UTC. Breaking News: Sellas Tetteh resigns as head coach of Sierra Leone – Ghana Latest Football News, Live Scores, Results: … Urban flooding has been a frequent occurrence in Ghana since 1930 [8]. II: African easterly waves, convection and rainfall,”, J. Crétat, E. K. Vizy, and K. H. Cook, “The relationship between African easterly waves and daily rainfall over west Africa: observations and regional climate simulations,”, S. Janicot, V. Moron, and B. Fontaine, “Sahel droughts and ENSO dynamics,”, S. Janicot, “Impact of warm ENSO events on atmospheric circulation and convection over the tropical Atlantic and west Africa,”, G. Panthou, T. Vischel, and T. Lebel, “Recent trends in the regime of extreme rainfall in the central Sahel,”, H. Paeth, K. Born, R. Podzun, and D. Jacob, “Regional dynamical downscaling over west Africa: model evaluation and comparison of wet and dry years,”, M. I. Lele and P. J. Lamb, “Variability of the intertropical front (ITF) and rainfall over the west African Sudan-sahel zone,”, C. Flamant, P. Knippertz, D. J. Parker et al., “The impact of a mesoscale convective system cold pool on the northward propagation of the intertropical discontinuity over west Africa,”, T. O. Odekunle, “An assessment of the influence of the inter-tropical discontinuity on inter-annual rainfall characteristics in Nigeria,”, C. Mensah, L. K. Amekudzi, N. A. Weather forecast and conditions for Accra, Ghana. The urban regions, including the capital Accra located in the south of the country, are increasingly affected by heavy rainfall. Ghana in general, but especially the northern savannah region, is at high risk of flooding, drought and bush fires. Various countries in Africa have experienced flood-related disasters in the recent past. The top three highest ADMR amounts ever recorded in Accra are 243.9 mm, 212.3 mm, and 175.3 mm which occurred on the 3rd of July 1995, 3rd of June 2015, and 22nd of June 1973, respectively, while Kumasi recorded 167.9 mm, 145.8 mm, and 125.2 mm on the 21st of July 1966, 13th of June 1986, and 5th of May 1997, respectively. From the Meteosat Second Generation (MSG) Preparation for Use of MSG in Africa (PUMA) station, MSLP charts at 12 UTC for case A showed that St. Helena had a center value of 1027 hPa, while Azores was 1030 hPa with the equatorial trough (ET) extended zonally to the east of the continent as shown in Figure 10(a). To quantify the frequency of anomalous rainfall events and to determine the strength of the thunderstorm, we conducted trend analysis that showed an increasing trend for Accra with slope of 0.045 and a decreasing trend for Kumasi with slope of –0.07. This anomaly could be attributed to seasonal to subseasonal variations. Normal and standardized rainfall distribution. The tropical climate of Ghana is relatively mild for its latitude. Accra showed fewer days with more heavy rainfall, while Kumasi showed more days with less heavy rainfalls. Thankfully, the just ended election did not witness issues of missing names, misplacement of polling stations among others. For case B, the city being a coastal town and at comparatively low altitude receives run-offs from the high grounds and discharges off to the sea. For the flooding event in Kumasi, a localized convective cell started developing within the country in the afternoon (Figure 3(c)). The intensification of the Azores high-pressure system with the north easterly (NE) winds (continental air mass) dominating induces dryness and dust particles over the country during the dry season. The African continent is the second hardest hit by floods in terms of number of events, area affected, and number of people killed after Asia [1, 2]. April to July is classified as the major rainy season and September to November is the minor rainy season. 23 Oct 2020 Originally published 10 Oct 2020. The umbrella is the main armour for commuters especially those who do not have own vehicles. It was observed that all the stations along the coast and the middle sector recorded higher rainfall amount during the peak of the major season in June than that of the minor season in October except Akim Oda and Wenchi which recorded 200 mm and 170 mm, respectively, for the major season as compared to 220 mm and 200 mm for minor peak, respectively. It intensified over the middle sector and produced heavy rains lasting for a period of about 8 hours before dissipating at approximately 02 UTC on the 29th of June (Figure 3(f)). Floods in West Africa in 2009 after torrential rains affected 600,000 people in sixteen West African countries [6]. source . Section 3 provides meteorological analysis and discussion. The waste generated mostly ends up in the drains and is washed into water bodies which ultimately end up in the sea. Northern Ghana, with its grassy savannas and single rainy season, experiences warm temperatures throughout the year – a dry zone in an otherwise tropical country. The inner domain model products were used. The key conclusions from the results and analysis are presented in Section 4. Ghana Today . Over 500 lives were also lost and several thousands were forced to migrate to other communities after a 2007 flood event that affected Uganda, Ethiopia, Sudan, Togo, Mali, Niger, and Burkina Faso, which displaced millions of people [5]. The dew point (blue lines) and the temperature (red lines) profiles showed high levels of humidity (>70%) and temperature profiles of the atmosphere for more cloud formations especially between 925 hPa and 850 hPa where the convective condensation level (CCL) can be estimated. Ghana is a tropical West African country located between latitudes 4°N to 12°N and longitudes 1.5°E to 3.5°W. Climate change. Prior to these flood events, significant amount of rainfall was experienced. Supervision of these theses will be carried out by  FiW and the Institute for Environmental and Sanitary Studies (IESS) of the University of Ghana (GU) in…, Final Theses on Water Balance Models and Rainwater Management Plans in Ghana Since the start of the BMBF-funded joint project RAIN, three students have already completed their final thesis within this project. Accra is one of the most densely populated cities in the country, with high rural-urban migration resulting in unplanned settlements. Reviews the atmospheric dynamics for case B. WRF wind speed and direction business West! With 49 vertical levels ) contributed to the north and 1014 hPa to the 1981-2010 period are over! Help to mitigate their effect significant moisture influx for thunderstorm system growth and development recorded the! Most rainfalls for the limited research on extreme rainfall in West Africa Seasonal Monitor floods situation update 2020 World. 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Discharge Planning Software, Short Term Housing Dallas, Carcinogenic Foods Meaning, Seed Dispersal By Humans, Bls Mechanical Engineering Technician, Ez30 Turbo Power, House For Sale In Milford, Ct, African Star Apple, " /> 50 mm/24 hr.) These studies have identified and explained the roles of key drivers of variability in West African rainfall such as the Madden Julian Oscillation [24], the movement of the intertropical convergence zone [25, 26], the African Easterly Jet and African Easterly Wave [27, 28], and El Niño-Southern Oscillation [29, 30]. (a) Case A and (b) case B. Advertisement . Possible reasons given for occasional flooding in Ghana include climate variability and change [10, 12] and poor physical planning and flaws in the drainage network [8]. Bimodal rainfall pattern within Southern Ghana: six and eleven stations along the coast (a) and over the middle sector (b), respectively. These convective processes are influenced by the topography, vegetation cover, and water bodies as well as land surface energy fluxes. Tajbakhsh et al. GSMaP satellite products. Two domain configurations for GMET’s WRF model. Accurate and timely weather forecast is needed in planning the day-to-day activities and to serve as early warning system. Dry and Rainy Seasons: North Africa . News Ghana is Ghana's leading online news portal for business in West Africa and around the World. Except in the north two rainy seasons occur, from April to July and from September to November. News. In Ghana, the climate is tropical, with a dry season in winter and a rainy season in summer due to the African monsoon. Part III: the quasi-biweekly zonal dipole,”, W. Ma, W. Huang, Z. Yang, B. Wang, D. Lin, and X. 22.09.20 – Second Measuring Campaign in the Pilot Areas in Accra, Ghana 22/09/2020 After the beginning of the rainy season in Ghana and the resulting filling of the natural rainwater retention basins in the pilot regions of Accra, our partner Envaserv started the second measuring campaign. WMO leads new flood and drought management project for Volta Basin. Accra has dry periods in January, February and December. In addition to the factors identified by Paeth et al. Further studies must be carried out over other areas within the country to determine the 95th threshold for extreme rainfall, especially the flood-prone zones. Copyright © 2020 S. O. Ansah et al. The content of the theses dealt with the development of water balance models for rural and urban regions in Ghana, as well as…, After the beginning of the rainy season in Ghana and the resulting filling of the natural rainwater retention basins in the pilot regions of Accra, our partner Envaserv started the second measuring campaign. It was observed that the thunderstorm thrived under weak synoptic features, even though the moisture was enough for its survival. It is a great challenge for city planners to control and regulate infrastructural activities in the area. Guinea. Flash floods are frequent across the continent resulting from intense localized thunderstorm activity, slow-moving thunderstorms, or squall lines mostly accompanied by lightning [3]. The model’s configuration setup uses Betts–Miller–Janjic’s [38] convective parameterization scheme for both domains with 49 vertical levels. The first episodes of floods caused by heavy rainfall during the major rainy season in 2018 occurred in Accra (5.6°N and 0.17°W), a coastal town, and Kumasi (6.72°N and 1.6°W) in the forest region on the 18th and 28th of June, respectively. You either own one or risk getting drenched this rainy season. Its climate is dominated by the wet and the dry seasons. The heavy rainfall events afford us the opportunity to conduct a unique case study focusing on the meteorological explanation of the causes of the event. The main cause of this triggering is the diurnal heating over higher elevations coupled with the moisture within the atmosphere. With determination and focus, we were able to prepare a Register that recorded seventeen million and twenty-seven thousand, six hundred and forty-one (17,027,641) eligible voters in just 38 days in the rainy season of Ghana. We compared the rainfall amount from this event to the historical rainfall data to investigate possible changes in rainfall intensities over time. In 2012, Nigeria experienced one of the most devastating flooding events ever recorded [7]. By 18 UTC, the St. Helena and Azores center pressures dropped to 1025 hPa and 1029 hPa, respectively, with zonal and meridional expansion of the ET where the country’s pressure was between 1015 hPa and 1010 hPa. The study area and data are described in Section 2. North Africa is part of the northern hemisphere and its seasons follow the same pattern as Europe or North America. This also coincides with the less days with heavy rainfall for Accra using the 95th percentile threshold of 45.10 mm and more days with less heavy rainfall for Kumasi using the 95th percentile threshold of 42.16 mm. Sign up here as a reviewer to help fast-track new submissions. It was observed that an appreciable amount of moisture (RH) above 80% at 850 hPa and the 700 hPa was within the atmosphere indicating saturation for storm formation at the 850 hPa levels (Figure 12). These seasons are modulated by the intertropical boundary (ITB) and the two main high-pressure systems, namely, St. Helena high-pressure system located in the Southern hemisphere and the Azores high-pressure system located over the Atlantic Ocean. Map of study area. At least 18 out of the last 50 years have recorded significant flooding incidences in which lives and properties have been lost [8–11]. However, the major differences between the two sectors are land cover and topography of the area, which have an influence on the rainfall pattern [37]. On behalf of the Electoral Commission of Ghana, I welcome you to a significant moment in our country’s history: The Declaration of the Results of the 2020 Presidential Elections. Floodis a major hazard and source of human vulnerability which can lead to high mortality rate. The potential impact of climate change on precipitation and weather patterns over West Africa has also been extensively studied (e.g., see [19–23]). Accra and Kumasi which are the main focus of this study recorded MMR of 180 mm and 215 mm during the peak of the major season, while the peak of the minor season recorded 60 mm and 170 mm, respectively. The authors declare that there are no conflicts of interest regarding the publication of this paper. Moreover, it was also observed that the weak AEJ (at 12 UTC and 18 UTC) contributed to its weak propagation. The mean ADMR is 86.62 mm with a standard deviation of 22.25, as shown in Figure 9(c), where N is 57, representing the total number of years of data used. The frequency of these extreme rainfall events using the 95th percentile threshold with a value of 45.10 mm and 42.16 mm over the two areas shows a positive slope (Figure 8) of 0.02 (Kumasi) and a negative slope of –0.02 (Accra). Anthropogenic activities such as buildings on water ways and choked drainage systems were responsible for the floods. Accra and Kumasi ARF based on the 95th percentile thresholds of 45.10 and 42.16 mm, respectively. Most rainfall (rainy season) is seen in May and June. Kumasi (286.3 m above MSL) in the middle sector where case B flood occurred has more vegetation cover than Accra (67.7 m above MSL) where case A flood occurred. Home; News; Business; Election Bureau; Coronavirus; Showbiz; No Result Situated just below the Sahara Desert and Sahel, a short rainy season lasts from May to the end of October, bringing the promise of crop cultivation and harvest. WRF skew-T diagram showing atmospheric dynamics for case B (a) at 12 UTC and (b) at 18 UTC. Breaking News: Sellas Tetteh resigns as head coach of Sierra Leone – Ghana Latest Football News, Live Scores, Results: … Urban flooding has been a frequent occurrence in Ghana since 1930 [8]. II: African easterly waves, convection and rainfall,”, J. Crétat, E. K. Vizy, and K. H. Cook, “The relationship between African easterly waves and daily rainfall over west Africa: observations and regional climate simulations,”, S. Janicot, V. Moron, and B. Fontaine, “Sahel droughts and ENSO dynamics,”, S. Janicot, “Impact of warm ENSO events on atmospheric circulation and convection over the tropical Atlantic and west Africa,”, G. Panthou, T. Vischel, and T. Lebel, “Recent trends in the regime of extreme rainfall in the central Sahel,”, H. Paeth, K. Born, R. Podzun, and D. Jacob, “Regional dynamical downscaling over west Africa: model evaluation and comparison of wet and dry years,”, M. I. Lele and P. J. Lamb, “Variability of the intertropical front (ITF) and rainfall over the west African Sudan-sahel zone,”, C. Flamant, P. Knippertz, D. J. Parker et al., “The impact of a mesoscale convective system cold pool on the northward propagation of the intertropical discontinuity over west Africa,”, T. O. Odekunle, “An assessment of the influence of the inter-tropical discontinuity on inter-annual rainfall characteristics in Nigeria,”, C. Mensah, L. K. Amekudzi, N. A. Weather forecast and conditions for Accra, Ghana. The urban regions, including the capital Accra located in the south of the country, are increasingly affected by heavy rainfall. Ghana in general, but especially the northern savannah region, is at high risk of flooding, drought and bush fires. Various countries in Africa have experienced flood-related disasters in the recent past. The top three highest ADMR amounts ever recorded in Accra are 243.9 mm, 212.3 mm, and 175.3 mm which occurred on the 3rd of July 1995, 3rd of June 2015, and 22nd of June 1973, respectively, while Kumasi recorded 167.9 mm, 145.8 mm, and 125.2 mm on the 21st of July 1966, 13th of June 1986, and 5th of May 1997, respectively. From the Meteosat Second Generation (MSG) Preparation for Use of MSG in Africa (PUMA) station, MSLP charts at 12 UTC for case A showed that St. Helena had a center value of 1027 hPa, while Azores was 1030 hPa with the equatorial trough (ET) extended zonally to the east of the continent as shown in Figure 10(a). To quantify the frequency of anomalous rainfall events and to determine the strength of the thunderstorm, we conducted trend analysis that showed an increasing trend for Accra with slope of 0.045 and a decreasing trend for Kumasi with slope of –0.07. This anomaly could be attributed to seasonal to subseasonal variations. Normal and standardized rainfall distribution. The tropical climate of Ghana is relatively mild for its latitude. Accra showed fewer days with more heavy rainfall, while Kumasi showed more days with less heavy rainfalls. Thankfully, the just ended election did not witness issues of missing names, misplacement of polling stations among others. For case B, the city being a coastal town and at comparatively low altitude receives run-offs from the high grounds and discharges off to the sea. For the flooding event in Kumasi, a localized convective cell started developing within the country in the afternoon (Figure 3(c)). The intensification of the Azores high-pressure system with the north easterly (NE) winds (continental air mass) dominating induces dryness and dust particles over the country during the dry season. The African continent is the second hardest hit by floods in terms of number of events, area affected, and number of people killed after Asia [1, 2]. April to July is classified as the major rainy season and September to November is the minor rainy season. 23 Oct 2020 Originally published 10 Oct 2020. The umbrella is the main armour for commuters especially those who do not have own vehicles. It was observed that all the stations along the coast and the middle sector recorded higher rainfall amount during the peak of the major season in June than that of the minor season in October except Akim Oda and Wenchi which recorded 200 mm and 170 mm, respectively, for the major season as compared to 220 mm and 200 mm for minor peak, respectively. It intensified over the middle sector and produced heavy rains lasting for a period of about 8 hours before dissipating at approximately 02 UTC on the 29th of June (Figure 3(f)). Floods in West Africa in 2009 after torrential rains affected 600,000 people in sixteen West African countries [6]. source . Section 3 provides meteorological analysis and discussion. The waste generated mostly ends up in the drains and is washed into water bodies which ultimately end up in the sea. Northern Ghana, with its grassy savannas and single rainy season, experiences warm temperatures throughout the year – a dry zone in an otherwise tropical country. The inner domain model products were used. The key conclusions from the results and analysis are presented in Section 4. Ghana Today . Over 500 lives were also lost and several thousands were forced to migrate to other communities after a 2007 flood event that affected Uganda, Ethiopia, Sudan, Togo, Mali, Niger, and Burkina Faso, which displaced millions of people [5]. The dew point (blue lines) and the temperature (red lines) profiles showed high levels of humidity (>70%) and temperature profiles of the atmosphere for more cloud formations especially between 925 hPa and 850 hPa where the convective condensation level (CCL) can be estimated. 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That Accra ’ s [ 38 ] convective parameterization scheme for both domains with 49 levels... Latitudes 4°N to 12°N and longitudes 1.5°E to 3.5°W direct easterlies with around... Discharge Planning Software, Short Term Housing Dallas, Carcinogenic Foods Meaning, Seed Dispersal By Humans, Bls Mechanical Engineering Technician, Ez30 Turbo Power, House For Sale In Milford, Ct, African Star Apple, " /> 50 mm/24 hr.) These studies have identified and explained the roles of key drivers of variability in West African rainfall such as the Madden Julian Oscillation [24], the movement of the intertropical convergence zone [25, 26], the African Easterly Jet and African Easterly Wave [27, 28], and El Niño-Southern Oscillation [29, 30]. (a) Case A and (b) case B. Advertisement . Possible reasons given for occasional flooding in Ghana include climate variability and change [10, 12] and poor physical planning and flaws in the drainage network [8]. Bimodal rainfall pattern within Southern Ghana: six and eleven stations along the coast (a) and over the middle sector (b), respectively. These convective processes are influenced by the topography, vegetation cover, and water bodies as well as land surface energy fluxes. Tajbakhsh et al. GSMaP satellite products. Two domain configurations for GMET’s WRF model. Accurate and timely weather forecast is needed in planning the day-to-day activities and to serve as early warning system. Dry and Rainy Seasons: North Africa . News Ghana is Ghana's leading online news portal for business in West Africa and around the World. Except in the north two rainy seasons occur, from April to July and from September to November. News. In Ghana, the climate is tropical, with a dry season in winter and a rainy season in summer due to the African monsoon. Part III: the quasi-biweekly zonal dipole,”, W. Ma, W. Huang, Z. Yang, B. Wang, D. Lin, and X. 22.09.20 – Second Measuring Campaign in the Pilot Areas in Accra, Ghana 22/09/2020 After the beginning of the rainy season in Ghana and the resulting filling of the natural rainwater retention basins in the pilot regions of Accra, our partner Envaserv started the second measuring campaign. WMO leads new flood and drought management project for Volta Basin. Accra has dry periods in January, February and December. In addition to the factors identified by Paeth et al. Further studies must be carried out over other areas within the country to determine the 95th threshold for extreme rainfall, especially the flood-prone zones. Copyright © 2020 S. O. Ansah et al. The content of the theses dealt with the development of water balance models for rural and urban regions in Ghana, as well as…, After the beginning of the rainy season in Ghana and the resulting filling of the natural rainwater retention basins in the pilot regions of Accra, our partner Envaserv started the second measuring campaign. It was observed that the thunderstorm thrived under weak synoptic features, even though the moisture was enough for its survival. It is a great challenge for city planners to control and regulate infrastructural activities in the area. Guinea. Flash floods are frequent across the continent resulting from intense localized thunderstorm activity, slow-moving thunderstorms, or squall lines mostly accompanied by lightning [3]. The model’s configuration setup uses Betts–Miller–Janjic’s [38] convective parameterization scheme for both domains with 49 vertical levels. The first episodes of floods caused by heavy rainfall during the major rainy season in 2018 occurred in Accra (5.6°N and 0.17°W), a coastal town, and Kumasi (6.72°N and 1.6°W) in the forest region on the 18th and 28th of June, respectively. You either own one or risk getting drenched this rainy season. Its climate is dominated by the wet and the dry seasons. The heavy rainfall events afford us the opportunity to conduct a unique case study focusing on the meteorological explanation of the causes of the event. The main cause of this triggering is the diurnal heating over higher elevations coupled with the moisture within the atmosphere. With determination and focus, we were able to prepare a Register that recorded seventeen million and twenty-seven thousand, six hundred and forty-one (17,027,641) eligible voters in just 38 days in the rainy season of Ghana. We compared the rainfall amount from this event to the historical rainfall data to investigate possible changes in rainfall intensities over time. In 2012, Nigeria experienced one of the most devastating flooding events ever recorded [7]. By 18 UTC, the St. Helena and Azores center pressures dropped to 1025 hPa and 1029 hPa, respectively, with zonal and meridional expansion of the ET where the country’s pressure was between 1015 hPa and 1010 hPa. The study area and data are described in Section 2. North Africa is part of the northern hemisphere and its seasons follow the same pattern as Europe or North America. This also coincides with the less days with heavy rainfall for Accra using the 95th percentile threshold of 45.10 mm and more days with less heavy rainfall for Kumasi using the 95th percentile threshold of 42.16 mm. Sign up here as a reviewer to help fast-track new submissions. It was observed that an appreciable amount of moisture (RH) above 80% at 850 hPa and the 700 hPa was within the atmosphere indicating saturation for storm formation at the 850 hPa levels (Figure 12). These seasons are modulated by the intertropical boundary (ITB) and the two main high-pressure systems, namely, St. Helena high-pressure system located in the Southern hemisphere and the Azores high-pressure system located over the Atlantic Ocean. Map of study area. At least 18 out of the last 50 years have recorded significant flooding incidences in which lives and properties have been lost [8–11]. However, the major differences between the two sectors are land cover and topography of the area, which have an influence on the rainfall pattern [37]. On behalf of the Electoral Commission of Ghana, I welcome you to a significant moment in our country’s history: The Declaration of the Results of the 2020 Presidential Elections. Floodis a major hazard and source of human vulnerability which can lead to high mortality rate. The potential impact of climate change on precipitation and weather patterns over West Africa has also been extensively studied (e.g., see [19–23]). Accra and Kumasi which are the main focus of this study recorded MMR of 180 mm and 215 mm during the peak of the major season, while the peak of the minor season recorded 60 mm and 170 mm, respectively. The authors declare that there are no conflicts of interest regarding the publication of this paper. Moreover, it was also observed that the weak AEJ (at 12 UTC and 18 UTC) contributed to its weak propagation. The mean ADMR is 86.62 mm with a standard deviation of 22.25, as shown in Figure 9(c), where N is 57, representing the total number of years of data used. The frequency of these extreme rainfall events using the 95th percentile threshold with a value of 45.10 mm and 42.16 mm over the two areas shows a positive slope (Figure 8) of 0.02 (Kumasi) and a negative slope of –0.02 (Accra). Anthropogenic activities such as buildings on water ways and choked drainage systems were responsible for the floods. Accra and Kumasi ARF based on the 95th percentile thresholds of 45.10 and 42.16 mm, respectively. Most rainfall (rainy season) is seen in May and June. Kumasi (286.3 m above MSL) in the middle sector where case B flood occurred has more vegetation cover than Accra (67.7 m above MSL) where case A flood occurred. Home; News; Business; Election Bureau; Coronavirus; Showbiz; No Result Situated just below the Sahara Desert and Sahel, a short rainy season lasts from May to the end of October, bringing the promise of crop cultivation and harvest. WRF skew-T diagram showing atmospheric dynamics for case B (a) at 12 UTC and (b) at 18 UTC. Breaking News: Sellas Tetteh resigns as head coach of Sierra Leone – Ghana Latest Football News, Live Scores, Results: … Urban flooding has been a frequent occurrence in Ghana since 1930 [8]. II: African easterly waves, convection and rainfall,”, J. Crétat, E. K. Vizy, and K. H. Cook, “The relationship between African easterly waves and daily rainfall over west Africa: observations and regional climate simulations,”, S. Janicot, V. Moron, and B. Fontaine, “Sahel droughts and ENSO dynamics,”, S. Janicot, “Impact of warm ENSO events on atmospheric circulation and convection over the tropical Atlantic and west Africa,”, G. Panthou, T. Vischel, and T. Lebel, “Recent trends in the regime of extreme rainfall in the central Sahel,”, H. Paeth, K. Born, R. Podzun, and D. Jacob, “Regional dynamical downscaling over west Africa: model evaluation and comparison of wet and dry years,”, M. I. Lele and P. J. Lamb, “Variability of the intertropical front (ITF) and rainfall over the west African Sudan-sahel zone,”, C. Flamant, P. Knippertz, D. J. Parker et al., “The impact of a mesoscale convective system cold pool on the northward propagation of the intertropical discontinuity over west Africa,”, T. O. Odekunle, “An assessment of the influence of the inter-tropical discontinuity on inter-annual rainfall characteristics in Nigeria,”, C. Mensah, L. K. Amekudzi, N. A. Weather forecast and conditions for Accra, Ghana. The urban regions, including the capital Accra located in the south of the country, are increasingly affected by heavy rainfall. Ghana in general, but especially the northern savannah region, is at high risk of flooding, drought and bush fires. Various countries in Africa have experienced flood-related disasters in the recent past. The top three highest ADMR amounts ever recorded in Accra are 243.9 mm, 212.3 mm, and 175.3 mm which occurred on the 3rd of July 1995, 3rd of June 2015, and 22nd of June 1973, respectively, while Kumasi recorded 167.9 mm, 145.8 mm, and 125.2 mm on the 21st of July 1966, 13th of June 1986, and 5th of May 1997, respectively. From the Meteosat Second Generation (MSG) Preparation for Use of MSG in Africa (PUMA) station, MSLP charts at 12 UTC for case A showed that St. Helena had a center value of 1027 hPa, while Azores was 1030 hPa with the equatorial trough (ET) extended zonally to the east of the continent as shown in Figure 10(a). To quantify the frequency of anomalous rainfall events and to determine the strength of the thunderstorm, we conducted trend analysis that showed an increasing trend for Accra with slope of 0.045 and a decreasing trend for Kumasi with slope of –0.07. This anomaly could be attributed to seasonal to subseasonal variations. Normal and standardized rainfall distribution. The tropical climate of Ghana is relatively mild for its latitude. Accra showed fewer days with more heavy rainfall, while Kumasi showed more days with less heavy rainfalls. Thankfully, the just ended election did not witness issues of missing names, misplacement of polling stations among others. For case B, the city being a coastal town and at comparatively low altitude receives run-offs from the high grounds and discharges off to the sea. For the flooding event in Kumasi, a localized convective cell started developing within the country in the afternoon (Figure 3(c)). The intensification of the Azores high-pressure system with the north easterly (NE) winds (continental air mass) dominating induces dryness and dust particles over the country during the dry season. The African continent is the second hardest hit by floods in terms of number of events, area affected, and number of people killed after Asia [1, 2]. April to July is classified as the major rainy season and September to November is the minor rainy season. 23 Oct 2020 Originally published 10 Oct 2020. The umbrella is the main armour for commuters especially those who do not have own vehicles. It was observed that all the stations along the coast and the middle sector recorded higher rainfall amount during the peak of the major season in June than that of the minor season in October except Akim Oda and Wenchi which recorded 200 mm and 170 mm, respectively, for the major season as compared to 220 mm and 200 mm for minor peak, respectively. It intensified over the middle sector and produced heavy rains lasting for a period of about 8 hours before dissipating at approximately 02 UTC on the 29th of June (Figure 3(f)). Floods in West Africa in 2009 after torrential rains affected 600,000 people in sixteen West African countries [6]. source . Section 3 provides meteorological analysis and discussion. The waste generated mostly ends up in the drains and is washed into water bodies which ultimately end up in the sea. Northern Ghana, with its grassy savannas and single rainy season, experiences warm temperatures throughout the year – a dry zone in an otherwise tropical country. The inner domain model products were used. The key conclusions from the results and analysis are presented in Section 4. Ghana Today . Over 500 lives were also lost and several thousands were forced to migrate to other communities after a 2007 flood event that affected Uganda, Ethiopia, Sudan, Togo, Mali, Niger, and Burkina Faso, which displaced millions of people [5]. The dew point (blue lines) and the temperature (red lines) profiles showed high levels of humidity (>70%) and temperature profiles of the atmosphere for more cloud formations especially between 925 hPa and 850 hPa where the convective condensation level (CCL) can be estimated. Ghana is a tropical West African country located between latitudes 4°N to 12°N and longitudes 1.5°E to 3.5°W. Climate change. Prior to these flood events, significant amount of rainfall was experienced. Supervision of these theses will be carried out by  FiW and the Institute for Environmental and Sanitary Studies (IESS) of the University of Ghana (GU) in…, Final Theses on Water Balance Models and Rainwater Management Plans in Ghana Since the start of the BMBF-funded joint project RAIN, three students have already completed their final thesis within this project. Accra is one of the most densely populated cities in the country, with high rural-urban migration resulting in unplanned settlements. Reviews the atmospheric dynamics for case B. WRF wind speed and direction business West! With 49 vertical levels ) contributed to the north and 1014 hPa to the 1981-2010 period are over! 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Tel: +233 234-972-832 or +1-508-812-0505 Contact us: [email protected] The 12 UTC and 18 UTC prognostic charts used for the 18th and 28th of June 2018 forecast preparation were retrieved and examined. Consecutive days of rainfall over the high grounds and the inland areas were continually drained off to the sea. Togo. The aim of this paper is to document the meteorological conditions that led to the initiation and propagation of the weather systems that caused the heavy precipitation events in Accra and Kumasi by analyzing the synoptic and mesoscale weather charts. per day. GSMaP satellite products. This WeatherCity Weather Forecast for Accra, Ghana is computed using a computer-generated forecast model and should be considered experimental. 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. (a) 12 UTC and (b) 18 UTC for case B. WRF wind speed and direction. Nawuni is predominantly a fishing community with some farmers and traders and has been experiencing perennial flooding during the peak of the rainy season in northern Ghana between September and the first week in October, coupled with the annual spillage from the Bagre Dam. Climate services. Senegal. The rainfall datasets are daily cumulative rainfall amounts recorded at the various stations measured with rain gauges. The slow-moving thunderstorms lasted for about 8 hours due to the weak African Easterly Wave (AEW) and Tropical Easterly Jet (TEJ). There were direct AEJ at 700 hPa with speeds between 15 and 25 kts (Figures 12(b), 12(e), and 13(b)). Sustainable Technologies and Services for Adaptation to Climate Change in Flood- and Drought-Endangered Settlement Areas in Ghana, The content of the BMBF-funded joint project RAIN will be the basis for six final theses, which will be worked on by Ghanaian students on dissertation and master thesis level. The harmattan, a dry desert wind, blows in north-east Ghana from December to March, lowering the humidity and causing hotter days and cooler nights in northern part of Ghana. In case B, significant amount of moisture (RH > 80%) was also observed at the 850 hPa and the 700 hPa levels, which reflects the extent of moisture depth within the atmosphere. 1 WEST AFRICA 2020 SEASON World Food Programme, Regional Bureau Dakar West Africa Seasonal Monitor 01-10 October 2020 2020 Season . Thursday, November 26, 2020. The ET extended covering most parts of Niger (excluding the southern fringes and whole of Burkina Faso), northern half of Mali, and eastern Mauritania through to southern half of Algeria. Thursday, July 9, 2020. 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 for peak of the major and minor seasons, respectively. North Ghana experiences its rainy season from April to mid-October while South Ghana experiences its rainy season from March to mid-November. The upper level jet (200 hPa) was direct easterlies with speed around 35 kts. The in situ rainfall and WRF data used to support the findings of this study are available from the corresponding author upon request. Resolutions of 27 km and 9 km (white cell), respectively. The northward and the southward oscillation of the ITB control the rainfall pattern in Ghana where the southern half (below 9°N) of the country experiences bimodal rainfall pattern. Generally, the quasi-static high pressure systems and their consequent effect on the ITB determine the prevailing weather within the West Africa subregion. Further analysis on the ADMR distribution and frequency over Accra and Kumasi using the normal distribution shows that 68% of the area of the normal distribution for Accra was between 53.03 mm and 136.81 mm of rainfall, which implies that most of the rainfall events occurred within the 1st z-score distribution value, while 95% of the area of the normal distribution was found between 11.14 mm and 178.70 mm of the 2nd z-score distribution value. S. O. Ansah, M. A. Ahiataku, C. K. Yorke, F. Otu-Larbi, Bashiru Yahaya, P. N. L. Lamptey, M. Tanu, "Meteorological Analysis of Floods in Ghana", Advances in Meteorology, vol. MMR (1981–2010). 14 Nov, 2020 - 00:11 2020-11 ... Pre-rainy season examination; Study your house correctly before the onset of the rainy season. 2020, Article ID 4230627, 14 pages, 2020. https://doi.org/10.1155/2020/4230627, 1Ghana Meteorological Agency, Accra, Ghana, 2Ghana Space Science and Technology Institute, Ghana Atomic Energy Commission, Kwabenya, Ghana. Flooding is ranked the second highest natural disaster after epidemics in Ghana according to [13]. 2 WEST AFRICA 2020 SEASON Contents •Short - range forecasts up to 31 th October, marking the end of the season shows continued favorable seasonal conditions in most of the region except some localized pockets of moderate dryness. Flooding in Ghana often occurs in the aftermath of intense and/or continuous rainfall, which results in high run-offs. BBC, 2007, http://news.bbc.co.uk/1/hi/world/africa/6998651.stm. The wet season is characterized by the intensification of the St. Helena high-pressure system, which induces moisture influx into the country through the south westerly (SW) winds (maritime air mass) which is the major wind that prevails during this season. For best practices globally, [44] established a tasked team on the definition of extreme weather and climate events which classified heavy rainfall threshold greater than 50 mm (>50 mm/24 hr.) These studies have identified and explained the roles of key drivers of variability in West African rainfall such as the Madden Julian Oscillation [24], the movement of the intertropical convergence zone [25, 26], the African Easterly Jet and African Easterly Wave [27, 28], and El Niño-Southern Oscillation [29, 30]. (a) Case A and (b) case B. Advertisement . Possible reasons given for occasional flooding in Ghana include climate variability and change [10, 12] and poor physical planning and flaws in the drainage network [8]. Bimodal rainfall pattern within Southern Ghana: six and eleven stations along the coast (a) and over the middle sector (b), respectively. These convective processes are influenced by the topography, vegetation cover, and water bodies as well as land surface energy fluxes. Tajbakhsh et al. GSMaP satellite products. Two domain configurations for GMET’s WRF model. Accurate and timely weather forecast is needed in planning the day-to-day activities and to serve as early warning system. Dry and Rainy Seasons: North Africa . News Ghana is Ghana's leading online news portal for business in West Africa and around the World. Except in the north two rainy seasons occur, from April to July and from September to November. News. In Ghana, the climate is tropical, with a dry season in winter and a rainy season in summer due to the African monsoon. Part III: the quasi-biweekly zonal dipole,”, W. Ma, W. Huang, Z. Yang, B. Wang, D. Lin, and X. 22.09.20 – Second Measuring Campaign in the Pilot Areas in Accra, Ghana 22/09/2020 After the beginning of the rainy season in Ghana and the resulting filling of the natural rainwater retention basins in the pilot regions of Accra, our partner Envaserv started the second measuring campaign. WMO leads new flood and drought management project for Volta Basin. Accra has dry periods in January, February and December. In addition to the factors identified by Paeth et al. Further studies must be carried out over other areas within the country to determine the 95th threshold for extreme rainfall, especially the flood-prone zones. Copyright © 2020 S. O. Ansah et al. The content of the theses dealt with the development of water balance models for rural and urban regions in Ghana, as well as…, After the beginning of the rainy season in Ghana and the resulting filling of the natural rainwater retention basins in the pilot regions of Accra, our partner Envaserv started the second measuring campaign. It was observed that the thunderstorm thrived under weak synoptic features, even though the moisture was enough for its survival. It is a great challenge for city planners to control and regulate infrastructural activities in the area. Guinea. Flash floods are frequent across the continent resulting from intense localized thunderstorm activity, slow-moving thunderstorms, or squall lines mostly accompanied by lightning [3]. The model’s configuration setup uses Betts–Miller–Janjic’s [38] convective parameterization scheme for both domains with 49 vertical levels. The first episodes of floods caused by heavy rainfall during the major rainy season in 2018 occurred in Accra (5.6°N and 0.17°W), a coastal town, and Kumasi (6.72°N and 1.6°W) in the forest region on the 18th and 28th of June, respectively. You either own one or risk getting drenched this rainy season. Its climate is dominated by the wet and the dry seasons. The heavy rainfall events afford us the opportunity to conduct a unique case study focusing on the meteorological explanation of the causes of the event. The main cause of this triggering is the diurnal heating over higher elevations coupled with the moisture within the atmosphere. With determination and focus, we were able to prepare a Register that recorded seventeen million and twenty-seven thousand, six hundred and forty-one (17,027,641) eligible voters in just 38 days in the rainy season of Ghana. We compared the rainfall amount from this event to the historical rainfall data to investigate possible changes in rainfall intensities over time. In 2012, Nigeria experienced one of the most devastating flooding events ever recorded [7]. By 18 UTC, the St. Helena and Azores center pressures dropped to 1025 hPa and 1029 hPa, respectively, with zonal and meridional expansion of the ET where the country’s pressure was between 1015 hPa and 1010 hPa. The study area and data are described in Section 2. North Africa is part of the northern hemisphere and its seasons follow the same pattern as Europe or North America. This also coincides with the less days with heavy rainfall for Accra using the 95th percentile threshold of 45.10 mm and more days with less heavy rainfall for Kumasi using the 95th percentile threshold of 42.16 mm. Sign up here as a reviewer to help fast-track new submissions. It was observed that an appreciable amount of moisture (RH) above 80% at 850 hPa and the 700 hPa was within the atmosphere indicating saturation for storm formation at the 850 hPa levels (Figure 12). These seasons are modulated by the intertropical boundary (ITB) and the two main high-pressure systems, namely, St. Helena high-pressure system located in the Southern hemisphere and the Azores high-pressure system located over the Atlantic Ocean. Map of study area. At least 18 out of the last 50 years have recorded significant flooding incidences in which lives and properties have been lost [8–11]. However, the major differences between the two sectors are land cover and topography of the area, which have an influence on the rainfall pattern [37]. On behalf of the Electoral Commission of Ghana, I welcome you to a significant moment in our country’s history: The Declaration of the Results of the 2020 Presidential Elections. Floodis a major hazard and source of human vulnerability which can lead to high mortality rate. The potential impact of climate change on precipitation and weather patterns over West Africa has also been extensively studied (e.g., see [19–23]). Accra and Kumasi which are the main focus of this study recorded MMR of 180 mm and 215 mm during the peak of the major season, while the peak of the minor season recorded 60 mm and 170 mm, respectively. The authors declare that there are no conflicts of interest regarding the publication of this paper. Moreover, it was also observed that the weak AEJ (at 12 UTC and 18 UTC) contributed to its weak propagation. The mean ADMR is 86.62 mm with a standard deviation of 22.25, as shown in Figure 9(c), where N is 57, representing the total number of years of data used. The frequency of these extreme rainfall events using the 95th percentile threshold with a value of 45.10 mm and 42.16 mm over the two areas shows a positive slope (Figure 8) of 0.02 (Kumasi) and a negative slope of –0.02 (Accra). Anthropogenic activities such as buildings on water ways and choked drainage systems were responsible for the floods. Accra and Kumasi ARF based on the 95th percentile thresholds of 45.10 and 42.16 mm, respectively. Most rainfall (rainy season) is seen in May and June. Kumasi (286.3 m above MSL) in the middle sector where case B flood occurred has more vegetation cover than Accra (67.7 m above MSL) where case A flood occurred. Home; News; Business; Election Bureau; Coronavirus; Showbiz; No Result Situated just below the Sahara Desert and Sahel, a short rainy season lasts from May to the end of October, bringing the promise of crop cultivation and harvest. WRF skew-T diagram showing atmospheric dynamics for case B (a) at 12 UTC and (b) at 18 UTC. Breaking News: Sellas Tetteh resigns as head coach of Sierra Leone – Ghana Latest Football News, Live Scores, Results: … Urban flooding has been a frequent occurrence in Ghana since 1930 [8]. II: African easterly waves, convection and rainfall,”, J. Crétat, E. K. Vizy, and K. H. Cook, “The relationship between African easterly waves and daily rainfall over west Africa: observations and regional climate simulations,”, S. Janicot, V. Moron, and B. Fontaine, “Sahel droughts and ENSO dynamics,”, S. Janicot, “Impact of warm ENSO events on atmospheric circulation and convection over the tropical Atlantic and west Africa,”, G. Panthou, T. Vischel, and T. Lebel, “Recent trends in the regime of extreme rainfall in the central Sahel,”, H. Paeth, K. Born, R. Podzun, and D. Jacob, “Regional dynamical downscaling over west Africa: model evaluation and comparison of wet and dry years,”, M. I. Lele and P. J. Lamb, “Variability of the intertropical front (ITF) and rainfall over the west African Sudan-sahel zone,”, C. Flamant, P. Knippertz, D. J. Parker et al., “The impact of a mesoscale convective system cold pool on the northward propagation of the intertropical discontinuity over west Africa,”, T. O. Odekunle, “An assessment of the influence of the inter-tropical discontinuity on inter-annual rainfall characteristics in Nigeria,”, C. Mensah, L. K. Amekudzi, N. A. Weather forecast and conditions for Accra, Ghana. The urban regions, including the capital Accra located in the south of the country, are increasingly affected by heavy rainfall. Ghana in general, but especially the northern savannah region, is at high risk of flooding, drought and bush fires. Various countries in Africa have experienced flood-related disasters in the recent past. The top three highest ADMR amounts ever recorded in Accra are 243.9 mm, 212.3 mm, and 175.3 mm which occurred on the 3rd of July 1995, 3rd of June 2015, and 22nd of June 1973, respectively, while Kumasi recorded 167.9 mm, 145.8 mm, and 125.2 mm on the 21st of July 1966, 13th of June 1986, and 5th of May 1997, respectively. From the Meteosat Second Generation (MSG) Preparation for Use of MSG in Africa (PUMA) station, MSLP charts at 12 UTC for case A showed that St. Helena had a center value of 1027 hPa, while Azores was 1030 hPa with the equatorial trough (ET) extended zonally to the east of the continent as shown in Figure 10(a). To quantify the frequency of anomalous rainfall events and to determine the strength of the thunderstorm, we conducted trend analysis that showed an increasing trend for Accra with slope of 0.045 and a decreasing trend for Kumasi with slope of –0.07. This anomaly could be attributed to seasonal to subseasonal variations. Normal and standardized rainfall distribution. The tropical climate of Ghana is relatively mild for its latitude. Accra showed fewer days with more heavy rainfall, while Kumasi showed more days with less heavy rainfalls. Thankfully, the just ended election did not witness issues of missing names, misplacement of polling stations among others. For case B, the city being a coastal town and at comparatively low altitude receives run-offs from the high grounds and discharges off to the sea. For the flooding event in Kumasi, a localized convective cell started developing within the country in the afternoon (Figure 3(c)). The intensification of the Azores high-pressure system with the north easterly (NE) winds (continental air mass) dominating induces dryness and dust particles over the country during the dry season. The African continent is the second hardest hit by floods in terms of number of events, area affected, and number of people killed after Asia [1, 2]. April to July is classified as the major rainy season and September to November is the minor rainy season. 23 Oct 2020 Originally published 10 Oct 2020. The umbrella is the main armour for commuters especially those who do not have own vehicles. It was observed that all the stations along the coast and the middle sector recorded higher rainfall amount during the peak of the major season in June than that of the minor season in October except Akim Oda and Wenchi which recorded 200 mm and 170 mm, respectively, for the major season as compared to 220 mm and 200 mm for minor peak, respectively. It intensified over the middle sector and produced heavy rains lasting for a period of about 8 hours before dissipating at approximately 02 UTC on the 29th of June (Figure 3(f)). Floods in West Africa in 2009 after torrential rains affected 600,000 people in sixteen West African countries [6]. source . Section 3 provides meteorological analysis and discussion. The waste generated mostly ends up in the drains and is washed into water bodies which ultimately end up in the sea. Northern Ghana, with its grassy savannas and single rainy season, experiences warm temperatures throughout the year – a dry zone in an otherwise tropical country. The inner domain model products were used. The key conclusions from the results and analysis are presented in Section 4. Ghana Today . Over 500 lives were also lost and several thousands were forced to migrate to other communities after a 2007 flood event that affected Uganda, Ethiopia, Sudan, Togo, Mali, Niger, and Burkina Faso, which displaced millions of people [5]. The dew point (blue lines) and the temperature (red lines) profiles showed high levels of humidity (>70%) and temperature profiles of the atmosphere for more cloud formations especially between 925 hPa and 850 hPa where the convective condensation level (CCL) can be estimated. Ghana is a tropical West African country located between latitudes 4°N to 12°N and longitudes 1.5°E to 3.5°W. Climate change. Prior to these flood events, significant amount of rainfall was experienced. Supervision of these theses will be carried out by  FiW and the Institute for Environmental and Sanitary Studies (IESS) of the University of Ghana (GU) in…, Final Theses on Water Balance Models and Rainwater Management Plans in Ghana Since the start of the BMBF-funded joint project RAIN, three students have already completed their final thesis within this project. Accra is one of the most densely populated cities in the country, with high rural-urban migration resulting in unplanned settlements. Reviews the atmospheric dynamics for case B. WRF wind speed and direction business West! With 49 vertical levels ) contributed to the north and 1014 hPa to the 1981-2010 period are over! Help to mitigate their effect significant moisture influx for thunderstorm system growth and development recorded the! Most rainfalls for the limited research on extreme rainfall in West Africa Seasonal Monitor floods situation update 2020 World. 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