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timelapse_traveller
Whistler has taught me alot about myself especially to value a balance between work and play.
Shot on a chilly -5c day guess I don't know the meaning of sitting still.
Shot on the 5dm3 with the 24 to 105 l Nd 1000
Pyrocumulus Clouds
The scorching power of a wildfire shows its intensity not only close to the ground, but also high in the sky. A type of cloud known as pyrocumulus, or more formally Cumulus flammagenitus, forms due to the blazing heat of fires or volcanic eruptions. Pyrocumulus clouds have recently been in the news in the U.S., due to their formation over wildfires in California. Although pyrocumulus clouds are formed by fire, they’re made of water just like any other cloud. High temperatures near the fire drive atmospheric convection, causing air near the ground to rise rapidly. As this air rises, water vapor in the air condenses into tiny droplets. Even though fires are generally thought of as dry, the burning of vegetation can release enough water to build these clouds. Water condenses most easily when it has small particles to act as a nucleus for the condensation, so ash in the air also contributes to pyrocumulus cloud formation. In addition, this ash can give the clouds an ominous gray color. Very large, turbulent pyrocumulus clouds can play host to lightning, making them even more imposing.
Although pyrocumulus clouds can have a very threatening appearance, they can sometimes be a savior for those threatened by the fires that created them. If atmospheric conditions are right, the condensed water can fall back to the ground as rain, reducing or extinguishing the fire.
-Ce
Information: World Meteorological Association, https://bit.ly/2mXFqSY Image: Wikimedia user JeremyaGreene, https://bit.ly/2LQqN1Q
shainblumphotography Watching clouds dance around mountain peaks in the Dolomites
Freezing in October
Lenticular cloud over the rock of Gibraltar - when it zooms in you can really see how the cloud appears as the air moves over the obstacle!
These UFO like clouds are known as lenticular clouds or altocumular standing lenticularis clouds. They are formed when a current of moist air is forced upwards as it travels over elevated land. This elevation and subsequent decrease in temperature causes the moisture in the air to condense and form a cloud. Lenticular clouds appear to be perfectly stationary, but in fact, this is not the case. These clouds only appear stationary because the flow of moist air continually resupplies the cloud from the windward side even as water evaporates and vanishes from the leeward side. Lenticular clouds can look like they are hovering for hours or days, until the wind or weather changes and the clouds disperse. -Jean
Fogsnow freckles
Sprinklings of snow decorated small patches of the Dutch landscape one morning late last month, creating these bright white spots covering a few fields while the zones around them remained clear. The freckle pattern results from a rare kind of snow, caused by cold winter fog formed from the condensation from nearby industrial chimneys, which freezes and falls as light snow. The freckles are all westwards of sites emitting the right kind of warm muggy air, and the ambient conditions were just right to produce this rare event.
Loz
Image credit: NASA http://go.nasa.gov/2kvW5gc
Orographic cloud over Corsica.
Resembling a spider's nest, this cloud formed when warm moist Mediterranean winds were forced to rise in order to pass over the island, resulting in cooling and condensation.
Loz
Image credit: Karen Nyberg.
Cedar River when the air temp was -11 degrees.
Lenticular clouds, also known as altocumular standing lenticularis clouds, are formed when a current of moist air is forced upwards as it travels over elevated land. This elevation and subsequent decrease in temperature causes the moisture in the air to condense and form a cloud.
Lenticular clouds appear to be perfectly stationary, but in fact, this is not the case. These clouds only appear stationary because the flow of moist air continually resupplies the cloud from the windward side even as water evaporates and vanishes from the leeward side. Lenticular clouds can look like they are hovering for hours or days, until the wind or weather changes and the clouds disperse.
-Jean
Gif snipped from Caters TV on Youtube https://www.youtube.com/watch?v=fq6fM9L0GAM
Cloud streets and ice in the Davis straight.
This image was taken by NASA's AQUA satellite in 2013. It shows cloud streets and winter sea ice in the Davis Straight, which connects the Atlantic Ocean with Baffin Bay, and separates Canada from Greenland. Cloud streets form when cold Arctic air passes over warmer ocean, causing condensation of the warmer marine air. When the winds pass over ice, no clouds result as the wind itself is very dry. It is the temperature difference with the sea that causes condensation. They align in the direction of the prevailing winds at the altitude where toe two airs meet.
Loz
Image credit: Nasa.
