Global lightning distribution based on satellite data of variation in the average annual lightning strike frequency per square kilometre over the Earth's surface. Frequency varies from red/orange (high) through yellow,green,blue,purple and grey to white (low). The data was collected by two sensors on satellites in low-Earth orbit,the Optical Transient Detector (OTD) and the Lightning Imaging Sensor (LIS). Measuring lightning-induced near-infrared changes in clouds revealed lightning "hotspots",including Florida,USA (upper left),Central Africa (centre) and the Himalayas (upper right). Map compiled by scientists at the National Space Science and Technology Center,USA | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / NASA |
Bildgröße: | 3180 px × 1542 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |