Frost

As lucky as I was to have Saraclark come tell me what most things growing in my yard are and to have W. come out and tell me where and why my wet spots are, I wish I knew a someone who could come out and explain the weather to me. We had a frost warning last night. My yard and my neighbor’s yard to the north were frost free when I walked the dog. His northern neighbor had a light frost in the sunny part of his yard, but there was no frost in the AT&T yard. But once we got up onto Lloyd, it was clear it had been frosty up there.

So, I wonder if it was, like, 33 in my yard at ground level, just warm enough to keep frost from forming (try saying that three times fast), but 32 up on Lloyd. But if hot air rises, shouldn’t Lloyd be a hair warmer than my low-lying yard? Unless the 32 degree temperatures literally only came as far south as Lloyd and no further.

See, that’s what I would love–someone to come over and look at the landscape and look at how weather behaves and explain to me my micro-climate.

Oh, I forgot to say, too, that the compost smelled so good. But it brings up a question I also need science to answer. I take dirt out of a hole. In this case, really thick, muddy, clay-like dirt. I break that dirt into smaller chunks and I mix it with my compost so that it is more amiable to young things that don’t have super roots. So, I must literally have twice as much dirt as I took out of the hole. Plus, it should take up more room because it had been compacted, but I have broken it into little airy bits. So, how can the hole take it all? Especially after I put a plant in there? How is it physically possible that the dirt that just came out of the hole does not refill that hole, but that it needs the dirt and the compost to do it?

After I get my micro-climatologist down here, I’m getting a yard physicist. Come explain this shit to me, yard physicist.

One thought on “Frost

  1. Perhaps the difference in frost can be explained by localized differences in cloud cover. Even thin clouds can prevent heat from radiating into space. From Wikipedia:

    “Radiative cooling is commonly experienced on cloudless nights, when heat is radiated into space from the surface of the Earth, or from the skin of a human observer. The effect is well-known among amateur astronomers, and can personally be felt on the skin of an observer on a cloudless night. To feel the effect, one compares the difference between looking straight up into a cloudless night sky for several seconds, to that of placing a sheet of paper between one’s face and the sky. Since outer space radiates at about a temperature of 3 kelvins (-270 degrees Celsius or -450 degrees Fahrenheit), and the sheet of paper radiates at about 300 kelvins (room temperature), the sheet of paper radiates more heat to one’s face than does the darkened cosmos.” http://en.wikipedia.org/wiki/Radiative_cooling

    I can’t help with the compost question, but then, I’ve been told that I don’t know my a$$ from a hole in the ground. :-)

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