Monday, October 15, 2018

Ground Fog In The Early Morning

We like to get out for our first walk of the day pretty early. Lately we've been out there before the sun has even come up over the coast range. There's plenty of light, but still pretty chilly in the crisp fall air. It has been incredibly clear and beautiful. Not much in the way of colorful sunrises at all, but the past few morning we've noticed a lovely low fog drifting in the cow pastures.

This is what it looked like Friday morning looking north before sunrise. The sky has a bit of that pink Belt of Venus look.

Saturday morning on the longer neighborhood walk, looking west toward the ocean. In each of the fields and pastures we pass, there is a low fog generated by that field.
Here it drifted across a little road. This view is also looking west toward the ocean.
As we headed back looking eastward, this fog was drifting across the road from the field on the right.
On Sunday there was both a low fog and a higher fog blowing in. The light was lovely.

So, after three mornings of beautiful fog, I thought I should google around and see just what makes this ground fog happen. Here is one explanation.
Radiation fog is the most common type of fog. It is formed when heat from the surface radiates back to space at night, cooling air near the surface to saturation and producing fog. To get radiation fog, you need clear skies and cooling, moisture in the air (a wet ground really helps), and light winds. Light winds help mix this cool, saturated air to higher levels in the atmosphere, creating a deeper layer of fog.
Most fog reaches a few hundred meters up, but sometimes radiation fog doesn’t even hit above the knee. If winds are calm, there is no mixing of the atmosphere and the saturated air at the immediate surface is stagnant, leaving a very thin layer of fog at the ground. This type of fog is called ground fog, and it is a specific type of radiation fog.
I love learning something new. Radiation fog. I had no idea! We think it would be a great name for Fox News. This is how we are amusing ourselves while we figure out how to live in the dystopia that has become our country.


30 comments:

  1. Especially like those two shots of the fog drifting across the road; makes a person wish there were Fae folk in it, massing to spirit away the evil ones ruining this world...

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    1. isabelita-- I like those two as well. It is quite a sight!

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  2. Autumn fog is the most beautiful! The very top photo looks like the image a publisher would choose for a book cover. It's extremely evocative.
    I think you've nailed it with re-naming Fox.

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    1. CCorax-- I like the idea of that photo as a book cover. Maybe I should write that book. Hah! I don't have an attention span that long anymore.

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  3. OK, now I don't understand the color "Venus belt". Our mountain fogs are lingering each morning in the valleys, then kind of rise up the sides as the day heats up. Also very pretty.

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    1. Barbara-- It is such a lovely color, above the deep blue of the earth's shadow.

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  4. Great photos, clever last paragraph.

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    1. Colette-- Glad you liked that Fox News paragraph.

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  5. So you get a bonus with an early morning walk!

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    1. Red-- Yes! We are definitely rewarded with grand sights.

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  6. That's exactly the kid of fog that sometimes forms across the flat fenlands of Cambridgeshire. Legless horses seem to float around on it - very surreal!
    If I had to rely on any animal to be honest and truthful it would certainly not be a Fox!

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    1. John-- I hadn't thought to look, but the cows are probably legless here in the fog. They're often off in the distance and hard to see. I LOVE what you write about the Fox. Yes!

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  7. Yes, our country today seems to be "all fogged up!!"

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    1. Cathy-- You made me laugh. Thank you for that..."all fogged up..." indeed!

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    2. Actually, I can't take total credit for being creative with words. When I was in college I had a professor from Iran who had a fairly thick accent. It was a rainy day and he commented that "the windows are all fogged up." Of course a class of college students heard differently and completely cracked up. He joined us in laughing once someone filled him in!

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    3. Cathy-- I love this story! Thank you so much for sharing it. I just read it out loud to Roger and we had a good laugh.

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  8. beautiful photos! do you feel the cooler air when you pass through the ground fog? we get the ground fog around here, too, but I'm never out early enough to capture it. I think you've found a brilliant way to live in these crazy times. Keep walking and sharing!

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    1. Tara-- I'm so glad you like these photos. Thank you for that. We do try to stay sane, balancing the utter insanity of these times with whatever beauty we can find.

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  9. That low fog looks like you are walking into clouds like I have done in the mountains. Crisp air is perfect for waling.

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    1. Patti-- Yes! It's like walking through low clouds. I love that!

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  10. Gorgeous images - as always! I am very fond of fog, especially cycling through fog, it's like a soft caress and leaves tiny pearls of moisture all over.

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    1. Sabine-- I like this ground fog very much. It creates such a lovely scene to walk and bike ride through. Our beautiful planet is such a wonderful thing.

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  11. I had rain & drizzle yesterday as took my caravan back to the site. this morning as just overcast. Thik you had the better deal with your walk

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    1. Bill-- I think we did have a better deal. Although there may be some rain in our future.

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  12. Interesting! I never knew that, but it explains why fog often burns off by late morning -- because those clear skies are above it.

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    1. Steve-- It really is interesting trying to figure out why the fog is generated at ground level like this. I love a good atmospheric mystery.

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  13. Wow! That is almost as lovely as the fog settling between the mountains. Love the description of Fox. Someone posted that "life is too short to listen to people who get their news only from Fox."

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    1. NCmountainwoman-- Yes, I love that fog settling between the mountains. Always so beautiful. Just the fact the Fox advertises itself as NEWS blows my mind. Such a propaganda machine. Oy.

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  14. Beautiful photos. That fog is like something you could wrap yourself in, yet it can’t be touched.

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    1. 37paddington-- Yes! I love that description. Thank you for that.

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