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This is coming on the heels on the inescapable fact that most research findings on the continent of Africa are neither uptodate nor recent.
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Question-7
Climate variability is deeply rooted within West African society. The 1930-1960 wet period, the 1970-1980 droughts and the return of rainfall in the 1990s and 2000s illustrate this clearly and have demonstrated the population’s vulnerability, in particular in the Sahel zone. The climate changes analysed by the Intergovernmental Panel on Climate Change (IPCC) indicate the future trends likely to develop at the global and African levels: rising temperatures, rising sea levels, changes in the level and variability of rainfall, etc. They create new challenges and risks, but also provide new opportunities for the African continent.
The climate goes through different cycles of variable duration, alternating between cold and hot periods. The Wilson cycle is the longest of these cycles. It occurs every 300 million years, when the gap between continents narrows due to the interplay of their tectonic plates and the consequent changes in ocean circulation and in erosion (uplift of mountain ranges), triggering an overall cooling of the planet..
Other, shorter cycles linked to star movements punctuate climate alternations. The Earth has gone through several phases of warming and cooling over the last 700,000 years, at an average frequency of 100,000 years. A cycle consists of a suddenrise in temperature, followed by a warm period of around 10,000-20,000 years, called the interglacial period. This is then followed by a gradual cooling of the planet and the initiation of a glacial era. The end of the glacial stage is followed by a sudden reheating, leading to a new cycle.
The last glacial period reached its climax 18,000 years ago. The planet has been going through an interglacial period for over 10,000 years. Indeed, the warm period undoubtedly had some bearing on the development of agriculture and sedentary cattle breeding (Neolithic period). You can get detail information from this source; http://www.fao.org/nr/clim/docs/clim_080502_en.pdf.
As I said in my earlier
As I said in my earlier comment, the IPCC’s AR5 report is based on global assessments of climate change and not as such a region specific. However, the information, statistics and other data included in the report are based on the latest advances in the fields social and natural sciences. Moreover, from what we see from the document regarding the personalities of the scientist involved in IPCC and developed the report are world leading, highly reputed and dependable scientist drawn from diverse disciplines and regions of the world. Thus, with the present day tools available, the statistic are and information contained in the report can be taken as most accurate.
Thus, even if the report is not specific for Africa, what is true from the report is increasing atmospheric and ocean temperature and sea level rise are climate change events which are realities and unequivocal. However, taking the AR5 as a reference, further detailed studied on climate change in Africa is required not to disprove the report of AR5 but to substantiate and strengthen the findings of IPCC. I hope ACPC will take the prime responsibility to coordinate and lead further studies on climate change in Africa in the future.
By the way I have a different view on climate change in Africa that now climate change is a reality, but EVEN IF IT IS WAS NOT PROVED TO BE A REALITY, WE SHOULD HAVE MADE IT A REALITY IN AFRICA. This is because accepting climate change to be true in Africa; it means that Africa is encouraged to implement adaption and mitigation technologies. By this It mean that increased plantation of forest trees, more and more implementation of soil and water conservation, promotion of conservation agriculture technologies, disease and pest controls, inspire Africa focus on exploitation of emission free natural energy sources like solar, water and wind energy to use in green growth and development and so on.
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