Saturday, March 31, 2012

Global Dimming

In simple terms- it is when clouds reflect the sunlight back to space before it can reach the ground. Man made pollutants such as aerosols particles are the primary suspects. This phenomena is suspected to have been reducing evaporation leading to reduced rainfall and the failure of the monsoon in sub-Saharan Africa during the 1970s and 1980s which has lead to famine and the Sahel drought. Pacific regions like here in the Philippines also depend on the arrival of the monsoon rains for agriculture.

Scientists now are considering that global dimming may have been reducing the effects of global warming and that solving the problem of global dimming will therefore lead to the further increase of temperature higher than forecasted by global warming models. Who may have thougt that some pollutants we put in the air are also helping in a way by delaying the effects of global warming.

 Please watch this BBC documentary
 

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