Posted 9/11/2020 11:36 (#8489071 - in reply to #8488617) Subject: RE: 1971-2020 Climate Change: Temp & Moisture Maps
To me these maps are more divisive than informative. 50 years is pretty much no time at all and certainly not enough time to determine policy.
About the best explanation I've heard for the east to west differences is large cycles occurring around the globe. As those cycles slowly shift, it moves where dry and wet areas occur. I do not remember the cycle time, but it was pretty long.