NASA's ECOSTRESS Detects Surface Temperature Variations in Los Angeles

ECOSTRESS captured surface temperature variations in Los Angeles, California between July 22 and August 14 -- a period of extended heat -- at different times of day. The images show how different surfaces within the cityscape warm and cool throughout the day. They have been colored to show the hottest areas in red, warm areas in orange and yellow, and cooler areas in blue. The hottest areas are dark asphalt surfaces that have very little shade during the day and remain warm throughout the night due to their higher heat capacity. They include freeways, airports, oil refineries and parking lots. Clouds and higher-elevation mountainous areas were the coolest. More information is available at https://photojournal.jpl.nasa.gov/catalog/PIA22703