Thomas Robinson | January 12th, 2020
Scientists have projected that by the end of the 21st century,, the percent of the global population at risk for extreme drought will double compared to current conditions.
In a recent study, researchers at Michigan State University have simulated hydrological conditions expected by the end of the 21st century, and their findings suggest that the number of people at risk for severe drought could increase from 3% between 1976 and 2005, to 8%. The southern hemisphere, which already faces severe water shortages, such as in South Africa, is expected to be disproportionately affected by climate change. Unfortunately, the United States is also expected to have increased risks of drought because terrestrial water storage (TWS) will likely decrease in the coming years.
Terrestrial water storage is a measure of water stored in rivers, soils, and other reservoirs that plays an important role in how available water is as a resource. The researchers used recent modelling advancements to include TWS in global hydrological, and land surface models to better analyze how changes to TWS can influence drought conditions across the globe.
Iowa has suffered from drought conditions over the past two decades, and climate projections suggest that extreme weather, like the Derecho, will become more commonplace. Extreme weather poses a threat to Iowa’s crops and residents, and in the face of concerning projections, steps should be taken to help mitigate the effects climate change has on Iowans.