Friday 8 January 2016
Sunday 20 December 2015
Clouds
Lenticular Clouds
“This particular sunset lasted a good hour or more in late November in Boulder, Colorado. I was returning from a mountain biking trip and I saw the light begin to change slowly but in a special, almost strange kind of way and then I noticed the vast lenticular clouds that were beginning to catch on fire! I pulled off Route 93 and set up on the car hood (no tripod!) and then the light show began. The clouds were in place and then the light began to do its thing and changed from a yellow to slight orange then red then to purple as the sun set. But more than the colors, it was the clouds that were changing shape and the combination of changing light and ‘shape-shifter’ clouds created one of the most amazing light shows I have ever seen. I shot like crazy and managed to have quite a few keepers and some I have sold as custom-made fine art prints. There is a reason NCAR is located in Boulder as supposedly there is no other place in the lower 48 states that has such variety of atmospheric conditions to study. I was lucky that day. I always have a camera handy.”
nice
Sailing Stones
“The Racetrack is an ancient dry lake bed in Death Valley, famous for its sailing stones. Located between the Last Chance Mountains and the Cottonwood Mountains, the Racetrack Playa lies at 3600′ above sea level, is about 3 miles long by 1 mile wide in size, and appears almost perfectly flat. Much of the year the Racetrack lakebed is totally dessicated and covered with small hexagonal mud patterns, although during the two rainy seasons that Death Valley experiences the playa becomes muddy and is sometimes ‘underwater’. At the south end of the Racetrack Playa are found the Racetrack’s famous ‘sailing stones’. Typically about the size of a shoe box or larger, the stones mysteriously move about the playa leaving trails behind them. Noone has actually observed any of the stones moving. One theory about their locomotion suggests that a combination of wet mud (during the winter rainy season) and high winds, perhaps combined with a thin layer of ice atop the mud, allows the stones to slide. Evidence indicates that the rocks move once every few years, and that tracks last only 4-5 years. My hunch is the occasions of the stones’ movement is a function of seasonal weather patterns and the presence or absence of sufficient water, wind and ice to trigger the sailing phenomenon.”
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