  Many scientists now believe that global dimming caused by these pollutants has mitigated the temperature rises brought about by global warming.
<meaning-changed>   Many scientists now believe that global dimming caused by these pollutants has mitigated the temperature rises brought about by global warming.
 It is important to realise that this does not represent a net loss of this much sunshine to the climate system - if so, large temperature declines would have been observed. Instead, the sunshine is absorbed elsewhere in the system, with a much smaller net loss. Many scientists now believe that global dimming caused by these pollutants has mitigated the temperature rises brought about by global warming.