Finland Halo Display - OPOD

Finland Halo Display - A Spectacular Atmospheric Phenomenon

On June 24, 2014, Finland witnessed an extraordinary display of halos, showcasing the country's reputation as a hub for halo research. Reports of sightings flooded in from a wide area, capturing the attention of sky enthusiasts and researchers alike. The stunning images taken by Jari Luomanen provide a glimpse into this mesmerizing event.

The all-sky view captured by Luomanen's camera reveals an immensely bright parhelic circle that dominates the sky. Adorning this celestial ring are "5 suns" - the sun itself, two 22° parhelia (also known as sundogs), and two 120° parhelia. These additional suns create a captivating spectacle against the backdrop of the parhelic circle.

Amidst this celestial extravaganza, several other atmospheric phenomena make their presence known. The familiar 22-degree circular halo encircles the sun, while an outer circumscribed halo adds to the ethereal beauty of the display. However, what truly sets this event apart are the rare occurrences that captivate the eye.

Through the use of color subtraction enhancement, Luomanen's images reveal these rarities with remarkable clarity. Among them are high sun Parry arcs, a Wegener arc, a 46-degree halo, and brightly colored infralateral arcs slanting up from the horizon. These unique features add an extra layer of intrigue to an already awe-inspiring phenomenon.

The Finland Halo Display of June 24, 2014, serves as a testament to the complexity and diversity of atmospheric optics. It reminds us of the intricate interplay between light, ice crystals, and atmospheric conditions that give rise to such breathtaking displays. Here are some key takeaways from this remarkable event:

  • The parhelic circle takes center stage in this display, with its intense brightness and "5 suns" embellishments.
  • Sundogs, or 22° parhelia, flank the parhelic circle, creating a stunning visual effect.
  • The circumscribed halo encircles the sun, enhancing the overall spectacle.
  • Rare atmospheric phenomena, such as high sun Parry arcs, a Wegener arc, a 46-degree halo, and brightly colored infralateral arcs, add an element of surprise and wonder.
  • Color subtraction enhancement techniques reveal the subtler details and nuances of the halo display.
  • Finland's rich history in halo research and its favorable atmospheric conditions make it a prime location for observing and studying these optical phenomena.

The Finland Halo Display of June 24, 2014, stands as a testament to the endless wonders that the atmosphere can bestow upon us. It serves as a reminder of the beauty and complexity that surround us every day, often hidden in plain sight. By capturing these fleeting moments and delving into their intricacies, we can continue to unravel the mysteries of our atmosphere and gain a deeper appreciation for the natural world.

Finland Halos 24th June

Finland, home of halos and halo research saw a stupendous display June 24, '14 with sightings reported over a wide area

These "Stop Press" images are from the camera of Jari Luomanen. At left an all sky view.

All images ©Jari Luomanen, shown with permission

An immensely bright parhelic circle dominates the sky. "5 suns" bejewel it - the sun itself, two 22° parhelia and two 120° parhelia.

Surrounding the sun are the familiar 22 degree circular halo and an outer circumscribed halo. The sundogs are well beyond the circumscribed halo.

There are rarities. The colour subtraction enhancement at lower left shows them up.

We see high sun Parry arcs, a Wegener arc, a 46 degree halo and slanting up from the horizon brightly coloured infralateral arcs.

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Reference Atmospheric Optics

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  • "Finland Halo Display - OPOD". Atmospheric Optics. Accessed on March 1, 2024.

  • "Finland Halo Display - OPOD". Atmospheric Optics, Accessed 1 March, 2024

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