'Letterbox' Sunset & Receding Twilight Arch
Taken by Peter Lowenstein on February 18, 2022 @
Mutare, Zimbabwe
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Camera Used: Panasonic DMC-TZ60
Exposure Time: 10/10000
Aperture: f/4.1
ISO: 160
Date Taken: 2022:02:19 19:39:46
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Details:
The stratospheric aerosols from the Hunga-Tonga eruption on 15th January (that have given rise to spectacularly coloured sunrises and sunsets in Mutare for the past two weeks) are moving to the west resulting in less colourful sunrises and sunsets in which the twilight arches recede more quickly and the colours are concentrated closer to the horizon. On Friday evening a ‘letterbox’ sunset (in which the setting sun appears briefly between low cloud and the horizon) was followed half an hour later by a rapidly receding strongly coloured twilight arch ( x120 speed time-lapse video posted on YouTube at https://youtu.be/fMRy2INIII8 ) The strange undulations in the highest cloud visible in the lead sunset image and some later views are due to the effect of gravity waves on the volcanic aerosols in the stratosphere. Camera: Panasonic Lumix DMC-TZ60 in sunset mode.
Photographer's website:
https://youtu.be/fMRy2INIII8
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