Predicted warming of tropics this summer (IMAGE) University of California - Berkeley Caption Maps of the tropics showing the annual maximum wet-bulb temperatures predicted by the authors for the upcoming summer, taking into account current El Niño conditions and global warming (top) and the incremental effect due to El Niño alone (bottom). The reddest areas are predicted to have the highest wet bulb temperatures — a measure of the combined effects of humidity and temperature. The black boxes outline regions that were analyzed in more detail. Credit Yi Zhang, UC Berkeley Usage Restrictions none License Original 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.