Antisolar rays on the borders - OPOD

Last updated on September 16, 2023

Antisolar Rays on the Borders - A Fascinating Atmospheric Phenomenon

Have you ever looked up at the sky and noticed a peculiar convergence of rays from above and below? These captivating rays, known as antisolar rays, appear to converge towards a point opposite to the position of the sun. While they are commonly referred to as anticrepuscular rays, some argue that the term "antisolar" better captures their essence. In this article, we will delve into the intriguing world of antisolar rays and explore the phenomenon in greater detail.

What are Antisolar Rays?

Antisolar rays are a mesmerizing atmospheric optical phenomenon that occurs when sunlight is scattered by dust or tiny water droplets in the atmosphere. These rays appear to diverge from the antisolar point, which is exactly opposite to the position of the sun in the sky. Unlike their counterparts, crepuscular rays, which are observed near the sun, antisolar rays grace the opposite side of the sky.

The Appearance of Antisolar Rays

When you observe antisolar rays, you may notice that they seem to converge towards a specific point known as the antisolar point. This convergence is merely a perspective effect, as the rays are actually parallel to each other. The apparent convergence occurs due to the way our eyes perceive distant objects and their relationship to the sun's position.

Exploring Antisolar Rays on the Borders

A captivating example of antisolar rays on the borders was captured by Lars Brub�k during a flight descending into Kirkenes, over northern Finland. The photograph reveals the convergence of rays from above and below at the antisolar point. The stunning scenery includes Lake Inari, part of Russia, Norway, and Finland, with Murmansk visible on the horizon about 90 miles to the east.

Shadows Cast by Clouds

One interesting aspect of antisolar rays is their relationship with the shadows cast by clouds. As the sun's rays pass through gaps between clouds, they cast long, parallel shadows above and below the airplane's position. These shadows contribute to the dramatic effect of the antisolar rays and add depth to the overall scene.

The Beauty of Antisolar Rays

Antisolar rays are a true testament to the awe-inspiring beauty of our atmosphere. The convergence of these rays creates a mesmerizing visual display that can leave anyone in awe. Whether observed from an airplane window, a mountaintop, or any other vantage point, antisolar rays provide a unique perspective on the interplay between sunlight, atmospheric particles, and our own perception.

A Better Name: Antisolar Rays

While these rays are commonly referred to as anticrepuscular rays, some argue that the term "antisolar rays" is more fitting. Unlike crepuscular rays, which are observed near the sun during twilight hours, antisolar rays appear opposite to the sun's position. The term "antisolar" accurately captures this distinctive characteristic and highlights the phenomenon's relationship with the sun.

Conclusion

Antisolar rays are a captivating atmospheric optical phenomenon that showcases the interplay between sunlight, atmospheric particles, and our own perception. Their convergence towards the antisolar point creates a stunning visual display that never fails to amaze. Whether you encounter them during a flight or while admiring a picturesque landscape, take a moment to appreciate the intricate beauty of antisolar rays on the borders.

Antisolar Rays

Rays from above and below converge at the antisolar point. Imaged by Lars Brub�k over northern Finland from a flight descending into Kirkenes. ©Lars Brub�k, shown with permission

North is to the left. Lake Inari is at lower right. The scene includes part of Russia, Norway and Finland. Murmansk is on the horizon about 90 miles to the east .

Clouds cast long parallel shadows above and below the airplane position.

To the eye they appear by perspective to converge towards the antisolar point.

They are called anticrepuscular rays but antisolar is perhaps a better name.

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