Not sure how this landscaping is supposed to work


I’m still not sure how this new landscaping is supposed to work. My best guess is that the lower area is supposed to collect runoff and seepage from the surrounding lawn and other plants (and the street gutter behind me, interestingly enough) in order to reduce water usage and actually do something with water that would otherwise be sent into storm drains — a good idea in drought-stricken California.

There does seem to be a drain so that it won’t totally fill up in the rain, like it did a few months ago before they had all the plants in: Continue reading

Halo achievement unlocked: Spotted a parhelic circle.

Sun Halos over LA: Sundog, 22-degree circular halo, and parhelic circle

Sun halo fragments, clockwise from upper left:

  1. A sundog to the left of the sun.
  2. Part of a 22° circular halo to the right.
  3. Part of a parhelic circle (I think) in the opposite direction.

I spotted these just walking to lunch today, shortly after noon (well, DST noon). I wasn’t sure what I was seeing at first with the parhelic circle. It was clearly too smooth and regular to be part of the clouds surrounding it, but I’d never actually seen one before. Sundogs and 22-degree halos are a lot more common, even in the Los Angeles area.

After looking around for other halos, spotting the sundog and the 22°, and checking the height of both he sun and the mystery arc, I realized it was probably part of the parhelic circle, which when complete is a white circle running around the entire sky at the same altitude as the sun.

It wasn’t clear to the eye, but in the (slightly contrast-enhanced) photo of the sundog, it looks like the circle extends through it…which suggests to me that maybe I have seen it before. I’ve seen what I thought were elongated sundogs, but maybe they were sundogs with small fragments of this halo.

Halos like these are caused by reflections of sunlight inside ice crystals, sometimes near the ground and sometimes, as in this case, up in the sky. Different shapes, sizes and arrangements of crystals create different paths to the eye, which make different halos.