The sharp rise of Lake Victoria, a positive indicator to solar Wolf-Gleissberg cycles turning points
Abstract
The Sun experiences cycles of the order 80-120 years known as the Wolf-Gleissberg (WG). Climate change occur at their turning points. 1878 marked the end of a WG cycle and the beginning of a series of four low activity solar cycles. The induced 1878 sharp rise in Lake Victoria level was followed by a drop till 1890. Later on, the lake level rose and fall in sympathy with the weak solar cycles till 1922. Following the 1957 maximum of the next WG cycle a ~2.5 m sharp rise in Lake Victoria occurred. Again 1997 marked the end of the past WG cycle and the beginning of a new era of low activity solar cycles. As a consequence, the level of Lake Victoria rose sharply by 1.6 m and at present is dropping till the end of cycle 23 leading to drought conditions around 2009±2-3 years. Cyclic lake level will follow cycles 24 and 25 and possibly 26 when solar forcing will come to a holt.
- Publication:
-
Solar Variability as an Input to the Earth's Environment
- Pub Date:
- September 2003
- Bibcode:
- 2003ESASP.535..397Y
- Keywords:
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- Solar Cycle;
- Solar-Terrestrial Relations