The new mathematical model shows how much a city is producing greenhouse gases and the likelihood of flooding.
Previous research has shown that urban development affects rainfall. There is an urban heat island effect: the difference between the temperature in the city and the surrounding countryside.
As the city grows, the temperature rises. The new heat, heat, energizes the air and causes it to rise faster, condense, precipitate and rain over the city or downwind. Thus, the amount of precipitation that the city receives is either increasing or decreasing.
However, scientists also chose to include regional climate modeling targeting the continental United States to show the offsetting impact between urban development and greenhouse gas emissions on extreme precipitation.
According to the results of the work, precipitation will increase in the largest cities of the United States.
The findings of the study show an urgent need for cities to develop policies to deal with floods that threaten city resilience and infrastructure investment.