Human vulnerability and food insecurity – rainfall and economy in Sub-Saharan Africa
For Sub-Saharan Africa, patterns in economic growth follow precipitation patterns closely. As rainfall has decreased over the last 30 years, so has the financial development. Rainfed agriculture represents a major share of the economy of these countries, as well as for domestic food supply. Improved water resources management and a wider resource base are critical to the stability and security that is required for economic development.
12 May 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
Cereal productivity in sub-Saharan Africa under a projected Intergovernamental Panel on Climate Change (IPCC) scenario
A majority of the population in sub-Saharan African lives in rural areas, where income and employment depend almost entirely on rain-fed agriculture. This population is today at high risk. Sub-Saharan Africa already has a highly variable and unpredictable climate and is acutely vulnerable to floods and droughts. A third of the people in the region live in drought-prone areas, and floods are a recurrent threat in several countries. With climate ch...
26 Jan 2009 - by Philippe Rekacewicz
The contribution of climate change to declining water availability
The real concern for the future, in the context of changing patterns of rainfall, is the decrease of run-off water which may put at risk large areas of arable land. The map shows how seriously this issue must be taken, while the forecast indicates that some of the richest arable regions (Europe, United States, parts of Brazil, southern Africa) are threatened with a significant reduction of run-off water, resulting in a lack of water for rain-fed ...
26 Jan 2009 - by Philippe Rekacewicz (Le Monde diplomatique)
Industrial areas and seasonal zones of oxygen depleted waters
This graphic illustrates the strong link between areas with high densities of industrial activity and zones of seasonally oxygen-depleted waters.
There is a strong link between areas with high densities of industrial activity and zones of seasonal oxygen-depleted waters. In recent years there has been an increasing focus on treating and reducing municipal and industrial waste, and on reducing nitrogen levels in agricultural runoff. However, less...
26 Jan 2009 - by Phillipe Rekacewicz, (Le Monde diplomatique) February 2008
Sumatran orangutans live in lowland tropical rainforests, with precipitation normally between 1,680 mm and 4,070 mm annually. Western regions receive much more rain than those in the east, as prevailing winds from the Indonesian ocean are forced upwards, cooling rapidly and condensing water vapour, which then falls as precipitation.
13 Sep 2011 - by Riccardo Pravettoni, UNEP/GRID-Arendal