The Global Hydrology and Climate Center (GHCC) educates users about lightning and the techniques involved in their lightning and atmospheric electricity research at this website. To begin, users should visit the Lightning Primer, where they can discover the history of lightning research, the characteristics of storms, and types of lightning discharge, and the many methods used to study lightning....

The Global Hydrology and Climate Center (GHCC) educates users about lightning and the techniques involved in their lightning and atmospheric electricity research at this website. To begin, users should visit the Lightning Primer, where they can discover the history of lightning research, the characteristics of storms, and types of lightning discharge, and the many methods used to study lightning....

Using satellites and ground-based detection instruments, researchers have now mapped out lightning ratios for the continental United States. The Lightning Ratios site, from Space Science News (NASA), provides recent data in the form of a vibrant color map (.pdf or .jpg) of cloud-to-cloud lightning to cloud-to-ground lightning over the continental United States.