Africa

Africa is considered one of the most vulnerable regions to weather and climate variability. Extreme events such as heat waves have important impacts on public health, water supplies, food security, and more generally on both regional economies and natural ecosystems. A prolonged period of hot days can feed wildfires, inhibit crop yields, or produce algae blooms with consequences on lakes oxygenation and, ultimately, fish mortality. Understanding of temperature extreme regime in Africa is necessary to assess the impacts of climate change on human and natural systems and to develop suitable adaptation and mitigation strategies at country level. A way to quantify heath waves is to use the Heat Wave Magnitude Index daily (HWMId). The HWMId is defined as the maximum magnitude of the heat waves in a year. Computed annually, this index takes into account both the duration and the intensity of extreme temperature events, and enables a comparison between heat waves with different timing and location. This dataset presents the number of years in the period 1981-2018 with a HWMId equal or superior to 4. It gives a general idea of the spatial distribution of heat waves with moderate intensity.

Increasing water scarcity and water quality issues are serious constraints, especially for Northern Africa. A comprehensive assessment of spatial and temporal precipitation frequency is the initial step for defining public policies relating to water resources management and environmental monitoring. In the agricultural sector, a detailed knowledge of precipitation patterns is necessary to identify the most appropriate crop varieties for the region and to effectively manage climate related uncertainties. Precipitation frequency is also a central source of information for hazard mitigation and management. This layer shows the average annual precipitation (mm/year) for the period 1981-2017 across the continent.

African countries have an evident potential for solar energy. Knowing the amount of solar radiation reaching the earth's surface is of particular interest for photovoltaic installations. It can be represented by the Global Horizontal Irradiation: the total amount of energy received from the Sun by a surface horizontal to the ground during a period of time, expressed in Wh/m2. This map shows the yearly average (2005-2015) global horizontal irradiation (kWh/m2).

African countries have an evident potential for solar energy. Knowing what amount of solar radiation reaches the earth's surface is of particular interest for solar photovoltaic (PV) installations. It can be represented by the average annual potential energy production (or yield): the total amount of electricity (kWh) produced in one year by a 1 kWp PV system at optimal angle, expressed in kWh/kWp.

The Global Wind Atlas is a free, web-based application developed to help policymakers, planners, and investors identify high-wind areas for wind power generation. It also serves as a useful tool for governments to get a better understanding of their wind resource potential at provincial and local levels. Wind power density is a measure of the wind resources. This map shows the mean wind power density (W/m2) at 10 m heigth. Higher mean wind power densities indicate a better wind resource potential.

Modern energy services are crucial to human well-being and to a country’s economic development. Yet 1.2 billion people worldwide live without access to electricity. It is recognized that the central grid is unlikely to reach many remote areas in the near future: many of these communities will have low electricity consumption, making the costs of extending the grid unaffordable. Given the evident potential of solar energy for African countries, using stand-alone and mini-grid photovoltaic (PV) systems could be an alternative approach to meet the objective of universal electrification. This layer compares the costs of electricity produced by solar photovoltaic and diesel systems, the two prevailing off-grid options for rural electrification in Africa. The map shows the difference between solar- and diesel-based electricity production cost (cents USD/kWh) at one square-kilometre resolution. PV minigrid represent the least-cost electrification option in the orange-to-yellow areas, whereas cheaper diesel is depicted in purple. The higher the contrast, the larger the cost difference.

Modern energy services are crucial to human well-being and to a country’s economic development; and yet 1.2 billion people are without access to electricity. It is recognized that the central grid is unlikely to reach many remote areas in the near future: many of these communities will have low electricity consumption, making the costs of extending the grid unaffordable. Given the evident potential of solar energy for African countries, using stand-alone and mini-grid photovoltaic (PV) systems could be an alternative approach to meet the objective of universal electrification. This dataset presents the ratio between the optimized battery size (kWh) and PV array size (kWp) for PV mini-grids using Li-ion batteries to store electricity (instead of traditional lead-acid batteries). It includes layers modeling two distinct usage behaviors: Low energy consumption patterns: where the majority of energy is used during the night-time. High energy consumption patterns: where the majority of energy is used during the day-time. A higher ratio means that the battery size needed to satisfy the same electricity demand produced by the PV system is larger. Used in combination with other sources, these data can help governments, local authorities, and non-governmental organisations to investigate the suitability of PV mini-grids for the electrification of regions where access to electricity is lacking.

Despite a high total population, most parts of the African continent are sparsely populated, with almost 60% living in non-urban areas. Diesel generators have long been the traditional solution to decentralized electrification needs. For off-grid applications, they present lower up-front capital costs per kilowatt installed; however, the dramatic increase of fuel costs in recent years and the cost of transport to remote areas greatly diminish the low capital cost advantage of the diesel option. Even in the cases when the initial investments were subsidized, the high yearly fuel cost are born by the users which often results in early termination of its use. The map shows the spatial variance of the electricity costs per kWh delivered by an off-grid diesel generator.

In Sub-Saharan Africa, medium- and low-voltage data are often non-existent, uncompleted, or unavailable. This is a challenge for practitioners working on the electricity access agenda, power sector resilience or climate change adaptation. This layer presents the spatial extent of the existing and planned electricity grid (high, medium, low voltage level) compiled using multiple sources that enumerate elements of the existing transmission and distribution network.

Biomes are distinct biological communities (collection of plants and animals) that have formed in response to a shared physical climate. They are distinguished by characteristic temperatures and amount of precipitation. This map shows the geographic distribution of the eleven major terrestrial biomes found in Africa (out of 14 worldwide). It shows that the same biome can occur in geographically distinct areas with similar climates. Annual precipitations, fluctuations in precipitation and temperature variation (on a daily and seasonal basis) are important abiotic factors influencing the geographic distribution of a biome and the vegetation type in the biome.