As even climate alarmists are forced to acknowledge the absence of warming over the last 15 or so years, their excuse-making machine is kicking into high gear.
As we reported 10 days ago, a study in the Proceedings of the National Academy of Sciences blamed manmade cooling for offsetting manmade warming, thereby allowing natural variation to takeover driving the climate — whatever.
Now comes a new study in Science blaming volcanic activity, coal burning and forest fires for offsetting alarmist-predicted, greenhouse gas-induced warming.
The researchers conclude that,
Future changes in stratospheric aerosols are unknown since the frequency and intensity of minor volcanic eruptions may be greater or less than in the past decade (Fig. 1), and future trends in anthropogenic SO2 emissions as well as their ability to contribute to the stratospheric aerosol layer remain uncertain… The changes in the stratospheric aerosol layer have probably affected the observed rates of decadal warming over the past decade, highlighting the importance of the variable stratospheric aerosol layer for past and future decadal climate predictability.
At last we agree with the alarmists — climate change is a complex and unpredictable phenomenon. Case closed.