Associate Professor Dagang Wang, from the School of Geography and Planning, Sun Yat-sen University, published a research paper titles “The peak structure and future changes of the relationships between extreme precipitation and temperature” as a corresponding author in Nature Climate Change on March 6, 2017. The first author is Professor Guiling Wang from the University of Conneticut. Associate Professor Dagang Wang is the second author. They both are the corresponding authors.
Extreme climate events are intensified and occur more frequently under global warming, having a devastating impact on human lives. Extreme precipitation can cause severe catastrophic flood. A better understanding of how extreme precipitation changes under global warming is not only the research focus, but also the public concern. Associate Professor Dagang Wang, collaborating with Professor Guiling Wang from University of Connecticut, conducted the study on the peak structure and the future changes of the relationship between extreme precipitation and local temperature based on satellite-based observations and CMIP5 multi-model results. They found that the peak structure exists over all kinds of climate regimes under the current climate. In other words, extreme precipitation goes up as low to medium surface temperatures increase, and peaks when temperatures hit a certain high point, then drops off as temperatures continue rising. However, we cannot predict future change of extreme precipitation based on the extrapolation of current relationship between extreme precipitation and temperature, as the entire curve on relationship is moving to the higher temperature range and the threshold temperature at which precipitation peaks also goes up as temperature rises. The research results provide a new perspective of looking at changing extreme under global warming.
The research was funded by National Science Foundation of China. Nature Climate Change is the most influential journal in the field of climate change, with the impact factor of 17.184.