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Optical Effects
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A brilliant display of Altocumulus lenticularis duplicatus, also known as 'pile d'assiettes', spotted downwind of Mt Hood, Oregon, from White Salmon, Washington, US
A beautiful display of Altocumulus lenticularis duplicatus, also known as 'pile d'assiettes', spotted over the Velebit Mountain Range, Croatia
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Altocumulus lenticularis duplicatus, also known as 'pile d'assiettes', spotted over Derry, Northern Ireland
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Altocumulus lenticularis duplicatus spotted over Sant Adrià de Besòs, Spain
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Altocumulus lenticularis duplicatus spotted over Greenfield, California, US
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Altocumulus lenticularis duplicatus spotted over Tarragona, Spain
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An eye-catching example of Altocumulus lenticularis duplicatus, also known as 'pile d'assiettes', spotted while driving west from Madrid, near Sierra De Gredos, Spain
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Altocumulus lenticularis spotted overhead during a salmon fishing expedition in Argentina
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Altocumulus lenticularis duplicatus spotted over Ashcroft, British Columbia, Canada
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A spectacular example of a multi-layered Altocumulus lenticularis duplicatus, also known as 'pile d'assiettes', spotted by Keith Johnson while salmon fishing in the Andes, Argentina
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Signs of Altocumulus lenticularis duplicatus spotted over Montgomery, Alabama, US
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A vibrant sunrise prior to the passage of a cold front that was forecasted to bring sub-zero (F) temperatures to the area of Vermontville, Adirondacks, New York, US
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A unique example of Altocumulus lenticularis duplicatus, also known as 'pile d'assiettes', spotted over Sheffield, Canterbury, South Island, New Zealand
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Altocumulus lenticularis duplicatus, also known as 'pile d'assiettes', spotted at sunrise by Michael's friend, Barclay Rives, near Keswick, Virginia, US
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Altocumulus lenticularis duplicatus spotted over Trieste, Italy
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Altocumulus lenticularis duplicatus, also known as 'pile d'assiettes', over the Sandia Mountains, Albuquerque, New Mexico, US
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