![]() ![]() The location accuracy and detection efficiency will be reduced when the lightning stroke occurs outside of the network or when not all of the stations are operative. The efficiency of cloud-to-cloud lightning detection is more than 50%. the probability that a stroke with peak current greater than a certain level can be detected by the network, is estimated to reach 95%. The accuracy of the enhanced system in determining the location of cloud-to-ground lightning strokes is about 250 m within the network when all stations are operative. Although the map can be scaled down to show other parts of the world, it will only display lightning location within the vicinity of Hong Kong. Please note that the actual location of the lightning stroke may be more than several hundred metres away from the displayed position. The above map can be zoomed into street level so that the lightning symbol may be displayed over a street or a building. The location as shown depicts roughly the starting point of the discharge from one cloud to the other. However, it should be noted that they may sometimes precede cloud-to-ground strokes. As such, they might not affect people or facilities on the ground. Cloud-to-cloud lightning strokes are those detected strokes that did not reach the ground. ![]() The lightning records are updated at 5-minute intervals. The image shows cloud-to-ground or cloud-to-cloud lightning strokes as detected by the Lightning Location Network over the Pearl River Estuary and nearby regions in the past 30 minutes. ![]() Locations of lightning detection stations ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |