Quoted: In Madison, a four-inch rainfall in one day that used to occur once every five years now happens every other year, according to data from the National Oceanic and Atmospheric Administration. That got University of Wisconsin-Madison’s Steve Carpenter wondering whether extreme storms would lead to an increase in toxic blooms.
“I had thought maybe get a rainstorm, get a bloom, but it’s not that simple,” Carpenter said, who is lead author of the study published in the Proceedings of the National Academy of Sciences.
Carpenter, emeritus director of UW-Madison’s Center for Limnology, worked with other researchers to examine data collected from Lake Mendota. He said around three-quarters of all phosphorus pollution stems from extreme storms. While those storms play a large role, they don’t necessarily trigger a bloom right away.