Back in February 2013, one of the first posts I made was in regards to clouds showing signs of climate change. http://thehumblefuturist.com/do-the-clouds-forecast-climate-change/
At that time there was no proof and I was hoping that the process might take centuries to unfold. However, a recent study published in Nature verified that, in fact, the clouds are now showing signs of climate change. http://www.nature.com/nature/journal/vaop/ncurrent/full/nature18273.html
The image above shows change in observed and simulated cloud amount and albedo between the 1980s and 2000s.