AIRS Image of 30W (IMAGE) NASA/Goddard Space Flight Center Caption The AIRS instrument aboard Aqua provided temperature data on Tropical Depression 30W on Dec. 21 at 353 UTC (Dec. 20 at 10:53 p.m. EST). Coldest cloud top temperatures near minus 63 Fahrenheit (purple) surrounded the center of circulation. Credit Credits: NASA JPL/Ed Olsen Usage Restrictions None 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.