Photos and animation by Peter Lowenstein in Mutare, Zimbabwe.
Peter Lowenstein wrote on May 10, 2015:
Zimbabwe continues to have vivid sunsets caused by aerosols from the 22 April eruption of Calbuco volcano. This evening’s display included dynamic kaleidoscopic patterns of color from shifting crepuscular rays and moving reflections of sunlight from both diffuse static patches of aerosols high in the sky and a thin broken layer of low atmospheric cloud moving in from the west.
The most spectacular portion was captured in a time-lapse sequence of 28 photographs taken at about 20-second intervals, which have been combined to produce the accompanying animated gif.
The camera used was a tripod mounted Panasonic Lumix DMC-TZ 60 in sunset auto mode with wide angle lens.
Thank you, Peter!
Dario Almonacid posted the following video of Calbuco volcano to YouTube on the day of the eruption.
View more photos of Calbuco volcano
Les Cowley explains volcanic sunsets at his website Atmospheric Optics:
Volcanic eruptions can inject millions of tons of dust and gaseous sulfur dioxide into the stratosphere. The finer dust particles remain aloft for years and spread around the world while the sulphur dioxide evolves to an aerosol of sulfur acids that add to the particulates.
The dust and aerosol produce vivid sunset and twilight effects like the intense yellow-red horizon and purple-pink glows of the photograph. The purple glow is probably a combination of red-orange light transmitted through the lower atmosphere and scattered blue light from still sunlit stratospheric dust.
The volcanic ash has another optical effect. The small particles can diffract light to form a huge variant of a corona called a Bishop’s ring.
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Bottom line: We first received photos from Helio C. Vital of vivid sunsets in Rio de Janeiro, Brazil, thanks to Calbuco volcano. A few days later, Peter Lowenstein – who has contributed many amazing photos of sky phenomena to these pages (look here and here) – has been sending volcanic sunset photos from across the Atlantic in Africa.
from EarthSky http://ift.tt/1bKdvNK
Photos and animation by Peter Lowenstein in Mutare, Zimbabwe.
Peter Lowenstein wrote on May 10, 2015:
Zimbabwe continues to have vivid sunsets caused by aerosols from the 22 April eruption of Calbuco volcano. This evening’s display included dynamic kaleidoscopic patterns of color from shifting crepuscular rays and moving reflections of sunlight from both diffuse static patches of aerosols high in the sky and a thin broken layer of low atmospheric cloud moving in from the west.
The most spectacular portion was captured in a time-lapse sequence of 28 photographs taken at about 20-second intervals, which have been combined to produce the accompanying animated gif.
The camera used was a tripod mounted Panasonic Lumix DMC-TZ 60 in sunset auto mode with wide angle lens.
Thank you, Peter!
Dario Almonacid posted the following video of Calbuco volcano to YouTube on the day of the eruption.
View more photos of Calbuco volcano
Les Cowley explains volcanic sunsets at his website Atmospheric Optics:
Volcanic eruptions can inject millions of tons of dust and gaseous sulfur dioxide into the stratosphere. The finer dust particles remain aloft for years and spread around the world while the sulphur dioxide evolves to an aerosol of sulfur acids that add to the particulates.
The dust and aerosol produce vivid sunset and twilight effects like the intense yellow-red horizon and purple-pink glows of the photograph. The purple glow is probably a combination of red-orange light transmitted through the lower atmosphere and scattered blue light from still sunlit stratospheric dust.
The volcanic ash has another optical effect. The small particles can diffract light to form a huge variant of a corona called a Bishop’s ring.
Enjoying EarthSky so far? Sign up for our free daily newsletter today!
Bottom line: We first received photos from Helio C. Vital of vivid sunsets in Rio de Janeiro, Brazil, thanks to Calbuco volcano. A few days later, Peter Lowenstein – who has contributed many amazing photos of sky phenomena to these pages (look here and here) – has been sending volcanic sunset photos from across the Atlantic in Africa.
from EarthSky http://ift.tt/1bKdvNK
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