Parhelic circle at high sun near Paris

Parhelic Circle at High Sun near Paris

The parhelic circle is a captivating atmospheric optical phenomenon that can be observed under specific conditions. One such instance was captured in May '05 near Paris, specifically from Savigny le Temple, a Parisian suburb. The image, taken by Patrick Sogorb, showcases the parhelic circle in all its glory.

The parhelic circle is characterized by the presence of colored arcs encircling the sun. In this particular photograph, the combination of a 22° halo and a circumscribed arc contributes to the vibrant display. The contrast between this parhelic circle and its appearance at lower sun angles is noteworthy.

To capture this stunning image, a fisheye lens was utilized, and the camera was pointed almost directly upwards. The resulting photograph offers a unique perspective, allowing us to appreciate the parhelic circle in its entirety. It is important to note that the image has been shared with permission from Patrick Sogorb.

The parhelic circle is an optical phenomenon caused by the interaction of sunlight with ice crystals present in the atmosphere. These ice crystals act as prisms, bending and refracting light, which leads to the formation of various optical phenomena. The parhelic circle is created when sunlight passes through horizontally oriented ice crystals and is then reflected back to the observer.

The appearance of the parhelic circle can vary depending on the altitude of the sun. At high sun angles, such as in this photograph taken near Paris, the parhelic circle appears more elongated and stretched out compared to its appearance at lower sun angles. This elongation is a result of the positioning of the ice crystals and their interaction with sunlight.

The parhelic circle is just one of many atmospheric optical phenomena that can be observed under specific conditions. Other notable phenomena include halos, sundogs, and circumzenithal arcs. Each of these phenomena is caused by the interaction of sunlight with ice crystals or water droplets in the atmosphere, resulting in unique and captivating displays.

Observing atmospheric optical phenomena, such as the parhelic circle, can be a truly mesmerizing experience. These displays remind us of the intricate and awe-inspiring nature of our atmosphere. They serve as a reminder of the beauty that surrounds us and encourage us to take a moment to appreciate the wonders of the natural world.

In conclusion, the parhelic circle at high sun near Paris, as captured by Patrick Sogorb, offers a remarkable view of this atmospheric optical phenomenon. The combination of a 22° halo and a circumscribed arc creates a stunning display of colored arcs encircling the sun. The use of a fisheye lens and the upward-facing camera angle provide a unique perspective on this phenomenon. The parhelic circle is just one example of the many captivating atmospheric optical phenomena that can be observed under specific conditions. These displays remind us of the beauty and complexity of our atmosphere and encourage us to marvel at the wonders of nature.

High sun parhelic circle imaged in May '05 from Savigny le Temple, a Parisian suburb, by Patrick Sogorb (site).

The coloured arcs around the sun are a combination of a 22° halo and a circumscribed arc.

Contrast this parhelic circle with its appearance at lower sun.

A fisheye lens was used and camera is pointing almost straight upwards.

Image ©Patrick Sogorb, shown with permission.

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Reference Atmospheric Optics

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  • "Parhelic circle at high sun near Paris". Atmospheric Optics. Accessed on March 28, 2024. https://atoptics.co.uk/blog/parhelic-circle-at-high-sun-near-paris/.

  • "Parhelic circle at high sun near Paris". Atmospheric Optics, https://atoptics.co.uk/blog/parhelic-circle-at-high-sun-near-paris/. Accessed 28 March, 2024

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