Articles About Atmospheric Science, Meteorology, and Climatology

OPOD - Of Bicycles & Spiders

This article explores the phenomenon of diffraction in both man-made structures, such as bike rims, and natural structures, like spider webs, revealing the intricate interactions between light and matter. It examines how parallel machining marks and scratches on a bike rim and unknown scatterers within spider silk create captivating displays of disordered bands of mixed hues.

OPOD - Reflections on Sundogs

This article explores the formation of sundogs, revealing that reflections play a crucial role in their creation and explaining how internal reflections within horizontal plate crystals produce the vibrant colors associated with sundogs. It also highlights that sundogs can form without reflections only during specific times of the day, near sunset and sunrise.

Glory, aircraft shadow and cloudbow

This article explores the mesmerizing optical phenomena of glory, aircraft shadow, and cloudbow in the sky, revealing the interplay between sunlight and atmospheric particles. It delves into the science behind these captivating displays, expanding our understanding and appreciation of atmospheric optics.

Anti-crepuscular rays

The article explores the phenomenon of anti-crepuscular rays, which are beams of sunlight that appear to converge towards the point opposite to the sun in the sky. It discusses the formation, illusion of convergence, and similarities to crepuscular rays, highlighting the beauty and complexity of atmospheric optical phenomena.

Green Flash from the Bohemian Forest

Discover the rare and captivating "Green Flash from the Bohemian Forest" phenomenon, where temperature inversion creates a mesmerizing miraged sunset with green and possibly even blue flashes. This article explores the stunning beauty and complexity of atmospheric optics, reminding us of the wonders that surround us in nature.

Glory at Macchu Picchu

This article explores the mesmerizing optical phenomena of the glory and the Brocken spectre at Macchu Picchu, showcasing the complexities and mysteries of wave optics. It delves into the formation of these captivating effects, highlighting the enigmatic beauty and intricacies of nature.

Circumzenithal and supralateral arcs - OPOD

The article explores the captivating phenomenon of the circumzenithal and supralateral arcs, which are ethereal displays of atmospheric optics created by hexagonal ice crystals in high-altitude cirrus clouds. These arcs, characterized by vibrant colors and a downward curving halo, provide a breathtaking visual spectacle that leaves observers in awe.

OPOD - Icy Contrails

This article explores the science behind sundogs, vibrant halos that surround contrails in the sky, and delves into the formation of these phenomena through the presence of ice crystals or supercooled water droplets. It also discusses other optical effects, such as halos, that can occur when ice crystals interact with sunlight within contrails.

Aerial Rare Halos, China - OPOD

The article explores a rare and captivating aerial halo display observed in China, featuring unique phenomena such as Parry arcs, Wegener arcs, and helic arcs. Through advanced simulations and image enhancements, scientists gain a deeper understanding of atmospheric optics and the wonders of the natural world.

OPOD - Two Pillars

This article explores the science behind upper and lower sun pillars, captivating optical illusions created by the reflection of sunlight off tilted ice crystals. It delves into the factors that contribute to their formation and provides tips for photographing these stunning atmospheric phenomena.

IRIS software - known issues

This article discusses common issues encountered with the IRIS software, including Error 50003, and provides solutions such as performing a full installation of HaloSim or IRIS to ensure compatibility with Microsoft system files.

Cloud shadows and colours - OPOD

This article explores the mesmerizing world of cloud shadows and colors, uncovering the science behind these phenomena and the factors that contribute to their visual appearance. It highlights the illusion of upward shadows and the diverse palette of colors found within clouds, while also discussing the role of perception and the artistic inspiration they provide.

Dutch Still Life Reflections, Willem Claesz. Heda - OPOD

This article explores the intricate interplay of light and reflections in Willem Claesz. Heda's masterpiece, "Still Life with Gilt Goblet," and delves into the accuracy and mysteries of the window reflections depicted in the painting. It highlights Heda's observational skill and the significance of still life paintings during the Dutch Golden Age.

Mystery Rainbow in Tulip Field - OPOD

This article explores the "Mystery Rainbow in Tulip Field" captured in The Netherlands, revealing the differences in color and appearance between the distant rainbow and the sprinkler bow, shedding light on the complex interplay of water droplet size, light refraction, and atmospheric conditions that give rise to these optical phenomena. Through scientific analysis, the article unravels the secrets behind the peculiar color variations and distinct characteristics of this enigmatic rainbow, adding intrigue to our understanding of these natural wonders.

OPOD - Rare Elliptical Halo

This article explores the rare elliptical halo, a captivating atmospheric optical phenomenon, and discusses the ongoing debate surrounding its formation. Through the study of these elusive halos, researchers aim to uncover the secrets of our ever-fascinating sky.

Green flashes - sunset over a distant hillside

This article explores the science behind green flashes during sunset, particularly when viewed from a distant hillside. It discusses the atmospheric conditions and phenomena that contribute to the intensity of these captivating flashes.

OPOD - Early Twilight

This article explores the captivating phenomenon of early twilight, delving into its mesmerizing colors and atmospheric elements. From the twilight arch to the enigmatic purple glow, this enchanting time offers a glimpse into a world where beauty and wonder collide.

March 2nd is your next chance!

The article discusses the Zodiacal Light phenomenon, explaining what it is and how to increase your chances of witnessing it. It also showcases captivating images of the Zodiacal Light from Europe and provides tips for observing it.

Oily colours

This article explores the fascinating phenomenon of thin film interference, which produces vibrant "oily colors" on surfaces like oil puddles and soap bubbles. It delves into the science behind these colors, discussing factors such as viewing angle, film thickness, refractive index, and wavelength dependency.

Contrail Colours

This article explores the phenomenon of contrail colors, also known as contrail iridescence, and explains how sunlight interacts with water droplets or ice crystals in contrails to create stunning displays of colors in the sky. It highlights the unique characteristics of contrail colors and their role in capturing the beauty and artistry of nature's canvas.