Leaf temperature (VIDEO) Oregon State University This video is under embargo. Please login to access this video. Caption A portion of forest canopy in Harvard Forest in Petersham, MA heats up and cools across a 24-hour cycle during the summer of 2013. Cooler colors (blues, purples) indicate cooler temperatures, while warmer colors (reds, oranges) indicate warmer temperatures. There are clear differences in maximum canopy temperature between the evergreen white pine trees and the deciduous red oak and red maple. The movie was assembled from images captured by an FLIR A655 thermal camera, which monitored canopy temperature every 30 minutes from a 120' tower above the experimental forest from 2013 to 2017. Credit: Donald Aubrecht and Andrew Richardson. Credit Credit: Donald Aubrecht and Andrew Richardson. 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.