The most significant climatic change that has occurred has been a long-term reduction in rainfall in the semi-arid regions of West Africa. This was on the order of 20 to 40% in parts of the Sahel. There have been 3 decades of protracted aridity. Nearly all of Africa has been affected...
Winter temperatures were 10–17°C lower than today in Eurasia with a more significant decrease in northern regions. In Africa, winter temperature was 10–15°C lower than present in the south, while it was only reduced by 0–3°C in the tropical zone. Comparison of palaeoclimate ...
In inland aquifers, a decrease in groundwater recharge can lead to saltwater intrusion of neighbouring saline aquifers, and increased evapotranspiration in semi-arid and arid regions may lead to the salinisation of shallow aquifers. Originality/value – In Africa, climate change and variability have...
Amongst these climatic events, there is increased evidence for an abrupt multicentennial shift of climatic conditions around 3.8/3.7 kyr BP (4.1 cal. kyr BP) in mid- to low-latitude regions which had a profound impact on landscape and population migration. In the Mediterranean region, ...
A brief review of climatic changes over the last 800 000 years in southern Africa is presented. The greatest emphasis is placed on those changes occurring during the Holocene and the period of meteorological record. Twentieth-century rainfall variations and their spatial manifestations are examined, ...
There are six main climate regions:tropical rainy, dry, temperate marine, temperate continental, polar, and highlands. What are the 7 climate zones? Climate Zones A - Tropical Climates. Tropical moist climates extend north and south from the equator to about 15° to 25° latitude. ... ...
In Mediterranean and north-African regions, cultural trajectories have shown trends sometimes coincident with climatic changes. The mid Holocene was a period of intense changes in climate, and in environmental and cultural systems. This paper reports pollen and charcoal studies from these areas aiming ...
We examined the influences of temperature and precipitation anomalies on interannual variation in human WNV cases in three regions of the United States. There were consistent positive influences of winter temperatures, weaker and more variable positive effects of spring and summer temperatures, and ...
studies to the molecular epidemiology of BL in South America, specifically to two climatic regions: temperate (Argentina and Chile) and tropical (Brazil)... MI Gutiérrez,K Bhatia,F Barriga,... - 《Blood》 被引量: 232发表: 1992年 Late quaternary climatic changes in western tropical africa de...
Seal Formation Effects on Soil Infiltration and Runoff in Arid and Semiarid Regions under Rainfall and Sprinkler Irrigation Conditions In: Zereini, F., Hotzl, H. (Eds.), Climatic Changes and Water Resources in the Middle East and North Africa. Environmental Science and Engineering... M Ben...