water vapor

‘Atmospheric river’ rainstorm headed for Fraser Valley, up to 70 mm expected

‘Atmospheric river’ rainstorm headed for Fraser Valley, up to 70 mm expected

A heavy rainstorm is expected to hit the Fraser Valley, bringing 50 to 70 millimetres of rain, according to a warning from Environment Canada. Meteorologists call this type of rain pattern an “atmospheric river.” It’s caused by narrow regions in the atmosphere transporting water vapor outside the tropics. Once the vapor hits land, it releases in the form of rain or snow.

Featured video: Pulling drinking water out of thin air

Featured video: Pulling drinking water out of thin air

With droughts plaguing much of the western United States and millions of people across the globe living without access to safe water, the need for technologies that produce clean water is greater than ever. The key, according to Evelyn Wang, the Gail E. Kendall Professor and department head for MIT’s Department of Mechanical Engineering, is in the very air we breathe.