2_EvapDemand (IMAGE) Desert Research Institute Caption Study results show increases of 13 to 18 percent in evaporative demand during all four seasons by the end of the century. Credit Dan McEvoy/DRI Usage Restrictions This figure may be used with appropriate caption and credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.