A study, reported in the journal Nature, confirms the global increase in humidity found in previous studies.
“This confirmation that humidity and temperature are increasing as expected has important implications for future human health and comfort,” observed the Hadley Centre’s Peter Thorne, one of the research team.
Water vapour is a greenhouse gas, and it is thought that having more of it in the air could amplify temperature rise. Previous research has shown that humidity increases in Europe, a response to higher temperatures, were amplifying the temperature rise by about a factor of two.
It could also have important implications for extreme weather events such as tropical cyclones and rainstorms.