Posted in Photos, tagged air, atmosphere, bolt, channel, charge, climate, cloud, current, discharge, electricity, energy, environment, flare, fulgurite, heat, light, lightning, long exposure, luminosity, meteorology, mountain, nature, night, physics, power, science, storm, summer, thunder, thunderstorm, voltage, weather on July 30, 2008| 1 Comment »
After a scorching day here in Bergen yesterday, we were lucky enough to have cold air masses passing over us last night, with a spectacular light (and sound) show as a result. I snapped this one from my living room window. The set-up: tripod, Canon 40D, Canon EF 24-105 f/4, aperture f/4, shutter speed 10 sec. Processed with DxO with gold toning. All of these are available from Dreamstime, Shutterstock and iStockphoto in this lightbox.
Here’s one with more natural colours:
And a final shot:
Posted in Photos, tagged alternative energy, cirrus, clean, climate change, cloud, device, energy, energy crisis, engineering, global warming, machine, nature, new energy, norway, power, renewable resource, sky, sustainable energy, utsira, weather, wind, wind power, wind turbine on July 13, 2008| 1 Comment »
This is one of the two wind turbines on the very small island called Utsira outside the west coast of Norway. It is a test project that supplies 10 houses with electric power. In periods of low consumption, the energy is stored in hydrogen tanks that can be tapped when demand is high and production is low. It is an interesting prospect that could potentially be scaled up to supply large communities. The hydrogen can of course also be used to fuel cars. This image is priced at $50 (royalty-free) in my portfolio at the PhotoShelter Collection.
Posted in Photos, tagged air, aircraft, airliner, atmosphere, cirrus, climate change, cloud, combustion engine, condensation, condensation trail, contrail, energy, engine, environment, exhaust, fuel, global warming, h2o, humidity, hydrocarbon, ice, meteorology, moisture, physics, pollutant, pollution, saturation, stratosphere, temperature, vapor trail, water, water vapor on July 5, 2008| 1 Comment »
This picture was taken with my new Canon 100mm f/2.8 Macro lens, simply because it was the lens that was on my camera. I was testing my lens on flowers and insects when I suddenly looked up and saw the perfect contrails on the perfect blue sky. I took three shots with manual focus, and this was the sharpest one. It just proves that this lens has many uses. This image is priced at $50 (royalty-free) as part of the PhotoShelter Collection.
Being a meteorologist, I feel compelled to explain what contrails are. As jet aircraft enter the cold air just below the stratosphere, they trigger the formation of ice crystal Cirrus clouds. The exhaust of the engines provides the condensation nuclei necessary to produce clouds from the water vapor already present in the surrounding air. According to the IPCC, contrails contribute to global warming.
Erik Kolstad's photo blog 