There is a story in the Arthur C. Clarke book "Time Probe" called the "Weather Man" by Theodore L. Thomas. Could this be it?
The Weather Congress was the supreme body of Earth, able to bend states, nations, continents, and hemispheres to its will. What dictator, what country, could survive when no drop of rain fell for a year? Or what dictator, what country could survive when blanketed under fifty feet of snow and ice? (293)
