Sunny with showers

2019-03-07 02:08:01

By Nicola Jones HIGH-ENERGY particles from deep space that constantly slam into our upper atmosphere may have a hidden use: predicting the weather. When they strike the atmosphere, these “cosmic rays” produce showers of other particles that rain down on the Earth. Measuring how many there are could tell us how air temperature changes with altitude—crucial information for forecasters. Meteorologists currently measure temperature profiles by releasing balloons carrying sensors. “Airports send them off every one to six hours, and each one costs about £150,” says David Stephenson of the University of Reading. The sensors aren’t retrieved,