rainfall pattern in west africa

Climate | West Africa

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 northsouth movement of the Intertropical Convergence Zone (ITCZ)

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Recent rainfall in West Africa — English

The rainfall in the Upper Basin in JulyAugust is used by OPIDIN as an indicator of the flooding of the Inner Niger Delta 34 months later Rainfall is measured on a daily basis in many, but declining number of, weather stations across West Africa Some of these data are made available through the World Meteorological Organisation (WMO) Today

(PDF) Rainfall Variability Patterns in West Africa: Case

Two decades (1962–1971 and 2002–2011) exhibit rainfall excess and the last three ones (1972–1981, 1982–1991, and 1992–2001) show a rainfall deficit that affected West Africa in

Precipitation Patterns in West Africa in: Monthly Weather

Precipitation Patterns in West Africa Raymond P Motha 1 , Sharon K Leduc 2 , Louis T Steyaert 2 , Clarence M Sakamoto 2 , and Norton D Strommen 3 View More View Less 1 Atmospheric Science Department, University of Missouri, Columbia 65201

Precipitation Patterns in West Africa: Monthly Weather

Oct 01, 1980· Precipitation Patterns in West Africa Next Article Previous Article Precipitation Patterns in West Africa Authors: Raymond P Motha x Search for articles by this author Affiliations Atmospheric Science Department, University of Missouri, Columbia 65201 , See all authors & affiliations Add to Favorites

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New African rainfall patterns Geographical Magazine

Regions in West Africa, Central African Republic, western Cameroon and northeastern South Africa were highlighted as benefiting most from the extra rainfall, and consequently increased vegetation, as compared to a decade previously However, other countries, such as the Congo, Nigeria and Madagascar, in turn experienced less rainfall

Rainfall over the African continent from the 19th through

Jun 01, 2018· 312 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 (eg, 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

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

Global Rainfall Patterns NASA

In other words, when southern Africa, northern Australia, and South America are dry, subSaharan Africa, India and Southeast Asia, and Central America are wet, and vice versa When the scientists looked at rainfall measurements on a yeartoyear basis, a second pattern

The impact of ENSO on Southern African rainfall in CMIP5

Jan 18, 2015· Overestimations of summer rainfall occur over Southern Africa in all CMIP5 models Abnormal westward extensions of ENSO patterns are a common feature of all CMIP5 models, while the warming of the Indian Ocean that happens during El

Rainfall in West Africa Impact2C

The increase in temperature over West Africa will be at least 2°C It will be higher in the North of the region Evaporation will increase The fact that precipitation stays at the same level, in view with increasing evaporation, implies rising shortages in water resources

New African rainfall patterns Geographical Magazine

Regions in West Africa, Central African Republic, western Cameroon and northeastern South Africa were highlighted as benefiting most from the extra rainfall, and consequently increased vegetation, as compared to a decade previously However, other countries, such as the Congo, Nigeria and Madagascar, in turn experienced less rainfall

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Temporal/Spatial Distribution of Rainfall and the

rainfall and the associated circulation anomalies over West Africa The spatial and temporal distribution of JunSept (JJAS or wet) seasonal rainfall over West Africa was analyzed during the period 19602009, inclusive Empirical Orthogonal Functions (EOF) was used and the associated large scale circulation patterns analysed

Rainfall trends in the African Sahel: Characteristics

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 the a track density scaled to

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

Global Rainfall Patterns NASA

In other words, when southern Africa, northern Australia, and South America are dry, subSaharan Africa, India and Southeast Asia, and Central America are wet, and vice versa When the scientists looked at rainfall measurements on a yeartoyear basis, a second pattern emerged

Africa Climate | Britannica

Africa Africa Climate: A number of factors influence the climate of the African continent First, most of the continent—which extends from 35° S to about 37° N latitude—lies within the tropics Second, the near bisection of the continent by the Equator results in a largely symmetrical arrangement of climatic zones on either side This symmetry is, however, imperfect because of a

Rainfall distribution and change detection across climatic

Oct 01, 2014· Monthly rainfall pattern over Nigeria takes its conventional monomodal (Savanna and Sahel) and bimodal (Guinea) distribution as shown in Fig 2 and agriculturally sufficient rainfall would not start over the study domain until April Over Sahel and Savanna, it

The Climatic Analysis of Summer Monsoon Extreme

A number of the models depict the pattern of rainfall intensity as observed but some models overestimate the pattern over the coastal parts (FGOALSf3L and GFDLESM4) and western part (FGOALSf3L) of West Africa All model simulations explicitly show the pattern of wet days but with large discrepancies in their frequencies

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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Rainfall Varability and Drought in SubSaharan Africa

The continent has a long history of rainfall fluctuations of varying lengths and intensities The worst droughts were those of the 1910s, which affected east and west Africa alike They were generally followed by increasing rainfall amounts, but negative trends where observed again from 1950 onwards culminating, in West Africa, in 1984

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Spatiotemporal 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 partially extreme smallscale nature of the precipitation

Assessing recovery and change in West Africa's rainfall

Moctar Dembélé, Bettina Schaefli, Nick van de Giesen, Grégoire Mariéthoz, Suitability of 17 gridded rainfall and temperature datasets for largescale hydrological modelling in West Africa, Hydrology and Earth System Sciences, 105194/hess2453792020, 24, 11, (53795406), (2020)

SpatioTemporal 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

Climate of the Sahel and West Africa | Oxford Research

West Africa 1 has one of the most extreme climatic gradients in the world Within some 1,000 km, the environment transitions from the hyperarid Sahara Desert to forests with over 1,200 mm of rainfall per year The Sahel region of West Africa is a semiarid expanse of grassland, shrubs, and small, thorny trees lying just south of the Sahara

Rainfall trends in the African Sahel: Characteristics

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 the a track density scaled to

AMS Poster # 209 Changes in the Rainfall Pattern in

AMS Poster # 209: Changes in the Rainfall Pattern in the SemiArid Zone of West Africa: a Focus on Dry Spells occurrence during the Growing SeasonVideo pre

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Temporal/Spatial Distribution of Rainfall and the

rainfall and the associated circulation anomalies over West Africa The spatial and temporal distribution of JunSept (JJAS or wet) seasonal rainfall over West Africa was analyzed during the period 19602009, inclusive Empirical Orthogonal Functions (EOF) was used and the associated large scale circulation patterns analysed

SpatioTemporal 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

[PDF]

Spatiotemporal 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 partially extreme smallscale nature of the precipitation

[PDF]

Projected Changes in Mean Annual Rainfall Pattern Over

Figure 2: Mean annual rainfall pattern over West Africa for the baseline period (19802005) a) GPCPobserved and b) NorESM1Msimulated In order to quantify the model’s bias in simulating the observed mean annual pattern of rainfall over West Africa, we first interpolated the model output to the GPCP’s 25° X 25° grid resolution using

[PDF]

Rainfall Varability and Drought in SubSaharan Africa

The continent has a long history of rainfall fluctuations of varying lengths and intensities The worst droughts were those of the 1910s, which affected east and west Africa alike They were generally followed by increasing rainfall amounts, but negative trends where observed again from 1950 onwards culminating, in West Africa, in 1984

West Africa / Climate Analytics

This tool gives access to spatial patterns of relative change in crop yields at different levels of global average temperature warming and corresponding aggregated impacts at the country level for a selection of crops What’s happening in West Africa This Is What It’s All About: Building Resilience and Adapting to Climate Change in Africa

SA South African Rainfall Forecasts Data | Reenval

GFS 4 Day Rainfall Outlook Southern Africa Friday 29 January 2021 Monday 1 February 2021 2 Week GFS Rainfall Weather Forecast for Africa and Southern Africa Thursday 28 January 2021 Saturday 13 February 2021 model maps (WXMaps) in a format customized specially for South Africa giving you a 7 day outlook on predicted weather patterns

South Africa Daily Recorded Rainfall Figures / Data from

daily rainfall preliminary rainfall ! 24hour period ending at 08:00 rainfall in on whole mm gauteng bronkhorstspruit aws 1 johannesburg int wo 4 lanseria wo 4 pretoria unisa 3 pretoria university proefplaas 1 vereeniging 1 mpumalanga bourke's luck aws 2 ermelo wo 3 limpopo province alldays haly ars 92 lephalale 2 levubu 2 mara 13 steenbokfontein ars 4 tshanowa primary school 2

West African monsoon | Britannica

West African monsoon, a major wind system that affects West African regions between latitudes 9° and 20° N and is characterized by winds that blow southwesterly during warmer months and northeasterly during cooler months of the year Although areas just outside of this region also experience wind

RAL | | West African Monsoon and Rainfall Enhancement Mali

The additional observational capabilities in this region could help in understanding the interaction between the Saharan dust layer and thetropical airmasses that propagate into the Sahel region from the south and the evolution of MCS's and CS's in this transition region and associated changes in rainfall patterns in the region

Climate Change Impact on Rainfall and Temperature

Change in climate over West Africa is hereby defined as follows: During the rainy season which is the month of June to August, the rainfall patterns were observed to be the same for each of the scenarios As presented in Figure 9 There are always two rainfall maxima; one is centered on 15°W, 6°N while the other is centered on 5°E, 0°N