Pelican above the bluffs

Walked down to the pier on a gloomy day while my car was in the shop. People were pretty good at spreading out and wearing masks (prob. because the city started fining people back in summer).

Among other shorebirds, I saw a group of a half dozen pelicans whirling around and diving for fish.

#birds #sky #pelican #photo #gloomy

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A bright sundog next to a glass-sided building

A bright #sundog next to a glass-sided building. The sun is off to the left out of frame. The sundog had a bit more color and more of the spectrum in it as seen through my polarized sunglasses, so I kind of wish I'd taken a shot through one of the lenses, but at least you can see how bright it was. I haven't adjusted the color on this image at all - except for cropping, it's straight out of my phone. #sky #halo

A bright #sundog next to a glass-sided building. The sun is off to the left out of frame. The sundog had a bit more color and more of the spectrum in it as seen through my polarized sunglasses, so I kind of wish I'd taken a shot through one of the lenses, but at least you can see how bright it was.

I haven't adjusted the color on this image at all – except for cropping, it's straight out of my phone.

#sky #halo

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Bisected Halo. A clear 22-degree halo around the sun…

A circular halo around the sun, which is behind a tree. A contrail crosses the halo, leaving its shadow on the thin cloud layer below.

Bisected Halo. A clear 22-degree halo around the sun, bright enough that I didn't have to adjust the image afterward. This is straight from my phone.

Even cooler: you can actually see the contrail's shadow on the layer of cloud that's producing the halo! The sun is behind the tree, and while the contrail pops out so it *looks* closer than the almost uniform layer, but it's clear that the contrail is higher.

#sky #sun #halos

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Fragments of a circumhorizon arc

Cirrus clouds/contrails above a spiky plant, with a rainbow-colored section of cloud.

Cirrus clouds/contrails above palm trees, with two sections of cloud in rainbow-like colors.

Fragments of a #CircumhorizonArc seen on my way back from lunch today. I took some shots with my phone, because that's what I had, then remembered that I had the good camera with me and grabbed it from the office. The clouds had shifted, but not far enough to destroy the effect completely.

#halos #rainbow #clouds #sky

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Oh, and saturation has been enhanced on both photos to bring out the colors.

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Just realized: autocorrect turned “cirrus clouds” into “citrus clouds” in the image descriptions. Yes, both of them.

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Two views of a 22-degree circular halo around the sun

Two views of a 22-degree circular #halo around the sun that I saw on a walk this afternoon.

Halos are a lot more common than I used to think. Then I started actually looking for them. Even on a warm day like today, there can still be ice crystals higher in the atmosphere of the right size and shape to cause a display like this (or even more complicated ones).

#photos #optics #sky #silhouette

Two views of a 22-degree circular #halo around the sun that I saw on a ...

Two views of a 22-degree circular halo around the sun

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@sohkamyung Thank you!

Usually I just go for a utilitarian, “got a picture of the halo,” but this time I tried about five different things to block the sun, trying to compose an interesting shot as well. I’m going to have to keep that up!

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Compass in the Sky

Compass in the Sky

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Dreariest circumhorizon arc ever

Dreariest circumhorizon arc ever.

Dreariest circumhorizon arc ever. I could barely see any colors in the cloud at all without my polarized sunglasses, and when I took a photo through them, I *still* had to bump up the saturation.

I’ve seen several of these over the years. The brightest one was 9 years ago:

Feathery Not-a-Rainbow Cloud

The longest was just last year:

Double Solar Halo

#AtmosphericOptics #CircumhorizonArc #rainbow #sky #halo

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Some recent sun halo displays I’ve seen in the last 2 weeks

Some recent sun #halo displays I’ve seen in the last 2 weeks: An upper tangent arc (my first!), the top edges of a circumscribed and 22° circular halo, and most of a 22° circular halo (with bonus contrail shadow on the cloud layer!)

All shot on my Pixel 2 with levels adjusted.

These are all formed by reflection and refraction of light in ice crystals. (A great reference: https://www.atoptics.co.uk/halo/common.htm )

Also, all seen from Los Angeles, which isn’t freezing…at ground level.

#Photography #sky

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Spectrum in the sky above the Irvine Spectrum.

Spectrum in the sky above the Irvine Spectrum. The rainbow colors are more ordered than I’d expect in an iridescent cloud, so I looked up ice halos that might produce this effect near vertical just before sunset. It turns out a circumzenithal arc is a perfect match: a rainbow arc near the zenith, brightest when the sun is very low. I’d never seen one before – it’s always cool to spot a new kind of sun halo.

It was around 90°F during the day at ground level, but of course it can be a lot colder in the upper atmosphere.

Saturation increased to show the colors more clearly.

#halo #rainbow #sky #clouds

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Ice crystals in a cirrus cloud reflect sunlight at exactly the right angle to produce …

Ice crystals in a cirrus cloud reflect sunlight at exactly the right angle to produce a feathery rainbow effect. in ideal circumstances, a circumhorizon arc can stretch all the way around the sky, parallel to the horizon, but usually it’s only seen in fragments like this. I’ve only seen a few of these, and it’s been years since I’ve seen one this intense (even without taking the photo through my polarized sunglasses).

A more commonly-seen 22 degree circular halo surrounds the sun at the top of the frame, and a contrail cuts thorough the scene

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Sun halo fragments, clockwise from upper left…

Sun halo fragments, clockwise from upper left: A sundog to the left of the sun, part of a 22° circular halo to the right, and what I think is part of a parhelic circle in the opposite direction. I’ve seen the first two often enough, even here in #losangeles, but this is the first time I’ve seen the latter, which is a white circle that appears at the same altitude as the sun. #Halos like these are caused by reflections inside ice crystals, sometimes near the ground and sometimes in the upper atmosphere. #sky

Sun halo fragments, clockwise from upper left: A sundog to the left of the sun, part of a 22° circular halo to the right, and what I think is part of a parhelic circle in the opposite direction. I’ve seen the first two often enough, even here in #losangeles, but this is the first time I’ve seen the latter, which is a white circle that appears at the same altitude as the sun. #Halos like these are caused by reflections inside ice crystals, sometimes near the ground and sometimes in the upper atmosphere. #sky

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