They make shade and the climate changes.
Yes, according to the climate model referred to in the article linked below, stratocumulus clouds will suddenly disappear when and if CO2 levels reach 1200 ppm (about 3 times current levels), possibly 100 years from now, if fossil fuel consumption continues apace. Of course, the authors of this model are going to apply for a renewal of their research grant much sooner than that, so they are understandably under some pressure to report something novel and shocking.
No shortage in Wales
climate has always changed, long before humans had any kind of impact, watched a documentary a few years back describing how climate changed so much certain groups of humans could not adapt and died off.
the weird and extreme weather today if caused by man at all here is the real reason:
this is why there is such a cloud as mamatus (no such cloud existed before chemtrails), if their are other clouds not forming i would put the blame on chemtrails not climate change