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Climate West Africa - USGS

Mean annual rainfall 1981–2014, with number of months of 50 mm or more of rainfall. Download High Resolution. 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).

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Precipitation Patterns in West Africa in: Monthly Weather ...

1980-10-1  Precipitation Patterns in West Africa. A regional precipitation analysis from a total of 813 recording stations in 11 West African countries for the drought period 1968–75 is presented. Results illustrate the severity and extent of meteorological drought which prevailed throughout the region and reached greatest magnitude in 1973.

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Rainfall trends in the African Sahel: Characteristics ...

2019-6-4  The main features of the rainfall climatology in West Africa. (a) Mean May–October rainfall (color shading); location of the African Easterly Jet (AEJ, magenta contour) as indicated by the 9 m/s contour of the easterly wind at 600 hPa; maximum African Easterly Waves (AEW, orange color; contour retraced from Figure 5a in Thorncroft Hodges, 2001) as indicated by

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Rainfall Anomaly Patterns and Wind Field Signals over

1995-6-1  Rainfall Anomaly Patterns and Wind Field Signals over West Africa in August (1958–1989) Bernard Fontaine 1 , Serge Janicot 2 , ... Relationships between monthly West African rainfall anomaly patterns and monthly tropospheric wind changes are investigated for the 32 months of August (1958–1989) at an interannual time step. ...

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Temporal/Spatial Distribution of Rainfall and the ...

2015-10-10  rainfall and the associated circulation anomalies over West Africa. The spatial and temporal distribution of Jun-Sept (JJAS or wet) seasonal rainfall over West Africa was analyzed during the period 1960-2009, inclusive. Empirical Orthogonal Functions (EOF) was used and the associated large scale circulation patterns analysed.

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Rainfall over the African continent from the 19th through ...

2018-6-1  West Africa. Rainfall variability in the Sahel (sector D) is relatively homogeneous over a large area, extending across the continent. While zonal variations are evident (e.g., Nicholson and Palao, 1993, Nicholson, 2005, Lebel and Ali, 2009), the time series presented in Fig. 4 is largely representative of the region as a whole. The most ...

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Map of the African continent with country names and ...

2021-11-21  The high- est rainfall occurs in middle African countries and some countries along with west coast of West Africa. These coun- tries have (sub)-humid climatic characteristics.

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Rainfall distribution and change detection across climatic ...

2014-10-1  Some major works have identified the role of different climatological and dynamical features of West Africa to be responsible for such change in rainfall distribution and the dynamics of major factors responsible for dry period over Sahelian zone have been established in several studies (Nicholson, 1986, Omotosho, 2008, Oluleye, 2009).

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Ghana climate: average weather, temperature,

2021-12-1  The rainiest area is the south, where precipitation is above 1,500 millimeters (60 inches) per year, and even more so the small west coast area, where it reaches 2,000 mm (80 in) per year. The driest areas are the north,

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Spatial patterns and trends of extreme rainfall over the ...

2020-10-23  The southern coastal belt of West Africa (SCWA) with its high population density and many major cities, combined to the low elevation and poor urban planning, is very vulnerable to floods resulting from extreme rainfall events. The aim of this paper is to analyze the characteristics of extreme rainfall in the SCWA during the 1981–2015 period, in terms of frequency, intensity, seasonality ...

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Precipitation Patterns in West Africa - NASA/ADS

adshelp[at]cfa.harvard.edu The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A

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Spatio-Temporal Rainfall Patterns in Northern Ghana, West ...

Rainfall reliability in West Africa has important societal consequences. However, our understanding of the rainfall generating processes in this region remains incomplete. This study aims at the detection of different rainfall producing processes and their characteristics during the later part of the rainy season in Northern Ghana. Rainfall in this region has three main origins: monsoonal ...

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Spatio-temporal Rainfall Patterns in Northern Ghana

Rainfall in interior West Africa is subject to great variability, as well spatial as temporal, expressed by dry seasons of 6 months continuation, enormous interannual variability and the

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Changes in West African Summer Monsoon Precipitation

2020-6-11  Relative to the baseline, the spatial patterns of the RCP8.5 simulations indicate a general increase in summer monsoon rainfall over West Africa with a significant increase in precipitation above 10°N in the Sahel regions (Figure 3a). However, below 10°N, toward the Guinean coast, changes in WASM precipitation are not significant.

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Map of the African continent with country names and ...

2021-11-21  The high- est rainfall occurs in middle African countries and some countries along with west coast of West Africa. These coun- tries have (sub)-humid climatic characteristics.

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West Africa Seasonal Monitor (2021 Season) - May 1 - 10 ...

2021-5-25  Highlights • The rainy season started in the southernmost parts of West Africa. Light to moderate rainfall was observed across much of the region, with the heaviest rainfall totals recorded over ...

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Model simulations of rainfall over southern Africa and its ...

2016-3-11  rainfall. Tropical West Africa receives up to 7.5 mm/day dur-ing August, but for the November–April period yields are as low as 1mm/day. Over Central Africa two rainfall peaks occur, one during November (7.5 mm/day) and another during March (6 mm/day) (Hernandez-Diaz et al., 2013). East Africa’s rain-

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Rainfall in South Africa

Over most of South Africa, there is a definite rainfall pattern with rainfall increasing from west to east. This is illustrated by the yearly rainfall difference between Port Nolloth on the west coast, 50 mm and Richards Bay, 1 000 mm at the same latitude on the east coast.

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Change of rainfall distribution and circulation patterns ...

The areas with most rapidly increasing rainfall during monthly intervals are found to follow an almost circular path, starting out along the east coast and the adjacent interior in September and then being successively displaced to Zimbabwe, northern Botswana and northern South West Africa/Namibia, central and southern South West Africa/Namibia ...

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Rainfall Anomaly Patterns and Wind Field Signals over

1995-6-1  Rainfall Anomaly Patterns and Wind Field Signals over West Africa in August (1958–1989) Bernard Fontaine 1 , Serge Janicot 2 , ... Relationships between monthly West African rainfall anomaly patterns and monthly tropospheric wind changes are investigated for the 32 months of August (1958–1989) at an interannual time step. ...

Read More
Spatio-Temporal Rainfall Patterns in Northern Ghana, West ...

Rainfall reliability in West Africa has important societal consequences. However, our understanding of the rainfall generating processes in this region remains incomplete. This study aims at the detection of different rainfall producing processes and their characteristics during the later part of the rainy season in Northern Ghana. Rainfall in this region has three main origins: monsoonal ...

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CLIMPAG CLIMATE INDICATORS Rainfall Variability and ...

7. Central-west Africa: Angola, Congo, Zaire. This second wettest group (rainfall index 1489 mm) has shown a very "smooth" behaviour between 1964 and 1984, with a slight positive 1960-93 rainfall trend due to a run of wet and very variable years from 1985 to 1990.

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Changes in West African Summer Monsoon Precipitation

2020-6-11  Relative to the baseline, the spatial patterns of the RCP8.5 simulations indicate a general increase in summer monsoon rainfall over West Africa with a significant increase in precipitation above 10°N in the Sahel regions (Figure 3a). However, below 10°N, toward the Guinean coast, changes in WASM precipitation are not significant.

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West African Monsoon: current state and future

2018-11-2  West Africa, the home for more than 300 million people, is one of the most vulnerable regions to global warming due to its high exposure and low adaptive capacity (Barros et al. 2015).The agriculture-based economy of the region highly relies on the West African Monsoon (WAM), which produces a mean annual rainfall of 150–2500 mm.

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Rainfall in South Africa

Over most of South Africa, there is a definite rainfall pattern with rainfall increasing from west to east. This is illustrated by the yearly rainfall difference between Port Nolloth on the west coast, 50 mm and Richards Bay, 1 000 mm at the same latitude on the east coast.

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22 — Africa

2018-2-17  Projected rainfall change over sub-Saharan Africa in the mid- and late 21st century is uncertain. In regions of high or complex topography such as the Ethiopian Highlands, downscaled projections indicate likely increases in rainfall and extreme rainfall by the end of the 21st century. {22.2.2.2, 22.2.3}

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Rainfall Distribution in Ethiopia - GitHub Pages

2014-7-22  Rainfall has a strong clustering pattern. Different types of rainfall data will yield ... (above 1,500 meters) than the lowlands, except the lowlands in the west where rainfall is also high. Generally average annual rainfall level of areas above 1,500 meters is larger than 900 mm. ... gauge dataset of > 17,000 stations in Africa. Different ...

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Physical Geography West Africa - USGS

Physical Geography of West Africa. The 8 million square kilometers and 17 countries covered by this atlas encompass a wide range of landscapes from alluvial valleys in Senegal and Ghana, sandy plains and low plateaus across the Sahel, and rolling hills

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Historical Rain - WeatherSA Portal

Fraud Reporting Details. Toll Free Number: 0800 111 527. Email: [email protected] Toll free fax:0800 212 689. Postal: FREEPOST KZN665, MUSGRAVE, 4062. SMS Short Code: 33490. Historical Rain. Month January February March April May June July August September October November December.

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