Heat Map (IMAGE) Southwest Research Institute Caption This map of San Antonio illustrates the distribution of urban heat islands (red) near downtown. Southwest Research Institute has created a comprehensive data analysis tool to help the city identify urban heat islands and pursue viable mitigation methods for especially vulnerable populations. Credit Southwest Research Institute Usage Restrictions Images/Videos may be used by the public for educational and informational purposes only. 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.