NASA'S Lightning Climatology Map (IMAGE) NASA/Goddard Space Flight Center Caption Three months of Lightning Imaging Sensor (LIS) data were combined to form a "lightning climatology map" shown here. This period corresponds with the summer season in the Southern Hemisphere and the winter season in the Northern Hemisphere. The red and orange areas indicate the greatest concentration of lightning flashes. Credit NASA/MSFC 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.