Changes in the climate are expected to result in heavier rainfall. Calculations with climate models show that a heavy downpour will give 20-30 per cent more rain at the turn of the next century.
Thunder showers and torrential rainfall in the summer are part of what, in technical jargon, is called extreme or intensive short-term precipitation.
“Intensive short-term precipitation is the type of rain that causes most problems in towns and cities in connection with runoff and flooding, since it produces large quantities of rain in a short period of time,” says Jonas Olsson, who is a researcher in hydrology at the Swedish Meteorological and Hydrological Institute, SMHI. >> More