During the 1970s and early 1980s, there was a period of heavy snow which was caused by cold.
This was followed by 20 years of little snow, which was caused by global warming.
Over the past decade there has been lots of snow, which was also caused by global warming.
You might ask “How do you tell the difference between global warming snow and global cooling snow?”
That is easy. During the 1970s, funding depended on creating concern about global cooling. Now it depends on creating concern about global warming.