A collection of weather-related, time-lapse videos for the virtual meteorology classroom.
Showing posts with label Lightning. Show all posts
Showing posts with label Lightning. Show all posts
Upward-directed Lightning
Tom Warner of ztresearch has provided these slow-motion examples of the evolution of upward-directed, tower lightning near Rapid City, SD. Both movies illustrate flashes that were captured by a high-speed camera at an astounding 7,207 frames per second. Regarding the second movie, Tom states: "An upward lightning flash initiated from a TV tower in Rapid City, SD ... the positive polarity leader moves upward and branches into two primary channels. The right channel is weak and develops numerous recoil leaders which try to reionize the decayed branch. At one point the branch sustains growth following a recoil leader connection. The entire video is about 1/2 second."
Positive CG Lightning
Tom Warner captured this positive cloud-to-ground lightning flash with a high-speed camera -- recorded at 7,207 images per second! As he states: "Weak positive leader branches decay and become cutoff as they propagate downward from the cloud. Fast recoil leaders develop along the decayed branches in an attempt to reionize the branches. The downward positive leader eventually connects with the ground forming a bright return stroke." A royalty-free license of this video can be obtained at WeatherVideoHD.TV
"All Alone in the Night" - Another ISS Lapse
David Peterson compiled this series of ISS sequences. Another fine illustration of the peace and beauty of earth from afar.
Slow Motion Lightning
Tom Warner of ZT Research has documented lightning "anatomy" using photographic equipment that can record up to 100,000 framers per second. The video below is an excellent teaching source, revealing the stepped leader in all its glory.
Additional videos may be found on his website here. Animated gifs of similar perspectives may be found on this NWS site. Also, NASA has the same video as above with a bit of context.
The Arizona Monsoon in Time-lapse
Mike Olbinski provides this beautiful set of late summer 2012 'zona monsoon skyscapes.
The Arizona Monsoon in Timelapse (2012) from Mike Olbinski on Vimeo.
The Arizona Monsoon in Timelapse (2012) from Mike Olbinski on Vimeo.
"Earth" - an ISS Lapse
Michael Konig created this lapse from sequences of photographs taken by the crew of the expeditions 28 and 29 onboard the International Space Station from August to October, 2011. Shot at approximately 350 km AGL.
Earth from Michael König on Vimeo.
Earth from Michael König on Vimeo.
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