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January Banter


mackerel_sky

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Well it's good to have the King close for us. It's seems like most of this winter has been the GFS showing something wintry and the euro shooting us down. I'm sure it'll be the other way around for this system but it's nice to be close with the King. Couple of euro runs in row show us being close. We just need one system to put us all in a better mood.

Depends on how sweaty he gets underneath that robe.

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I have a question: I was given a temperature station with a remote sensor for outside. The display, which is inside, shows the correct inside temp, measured locally at the display. It also shows the outside temp, measured, of course, at the remote sensor site outside.

I mounted the remote sensor about 5.5' high inside the screened porch (and about 2.5' below the roof) on one of the supporting beams away from the house (so it wouldn't be contaminated by heat from the house).

I felt like the outside temp was reading too warm, as it was several degrees warmer than surrounding reporting stations. When I took it down and set it on a table, which was about 3' high, right next to the beam where it was originally mounted, the temp dropped about 3 degrees and came in line with what I expected, based on the surrounding stations.

What might be causing the difference in temp readings?

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I have a question: I was given a temperature station with a remote sensor for outside. The display, which is inside, shows the correct inside temp, measured locally at the display. It also shows the outside temp, measured, of course, at the remote sensor site outside.

I mounted the remote sensor about 5.5' high inside the screened porch (and about 2.5' below the roof) on one of the supporting beams away from the house (so it wouldn't be contaminated by heat from the house).

I felt like the outside temp was reading too warm, as it was several degrees warmer than surrounding reporting stations. When I took it down and set it on a table, which was about 3' high, right next to the beam where it was originally mounted, the temp dropped about 3 degrees and came in line with what I expected, based on the surrounding stations.

What might be causing the difference in temp readings?

Is there an eve vent near the original placement?

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Is there an eve vent near the original placement?

No. I thought it was maybe too high and the ceiling was trapping what little heat might be left in the porch, but there is screen on either side of the mounting site. I also thought maybe the wood beam might have retained some heat. I dunno.

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I would expect the inside of a screened in porch to be a little warmer during the winter and cooler in the summer.

When I used to have an outdoor thermometer I tried it in the screened in porch and it was a little warmer than outside. These days, I just use GSO's temperature reading because I'm only a few miles away.

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I would expect the inside of a screened in porch to be a little warmer during the winter and cooler in the summer.

When I used to have an outdoor thermometer I tried it in the screened in porch and it was a little warmer than outside. These days, I just use GSO's temperature reading because I'm only a few miles away.

I'm guessing a little heat is being trapped. It says the sensor is water resistant and needs to be mounted in a sheltered area, so unfortunately, my choices are limited as to where to put it.

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I have a question: I was given a temperature station with a remote sensor for outside. The display, which is inside, shows the correct inside temp, measured locally at the display. It also shows the outside temp, measured, of course, at the remote sensor site outside.

I mounted the remote sensor about 5.5' high inside the screened porch (and about 2.5' below the roof) on one of the supporting beams away from the house (so it wouldn't be contaminated by heat from the house).

I felt like the outside temp was reading too warm, as it was several degrees warmer than surrounding reporting stations. When I took it down and set it on a table, which was about 3' high, right next to the beam where it was originally mounted, the temp dropped about 3 degrees and came in line with what I expected, based on the surrounding stations.

What might be causing the difference in temp readings?

 

The sun heats the roof and attached beams during the day.  After sunset the outside air cools quickly.  The air in the screened in porch is influenced by the heat retained in the overhead roof and beams.  Sort of a primitive radiant ceiling heating system. 2.5 feet is close enough for the thermometer to be affected.  If you keep track, you will notice that the difference in temp is less on windy nights because of the rapid exchange of air inside the porch with fresh colder outside air.  Only solution is to move the sensor.

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The sun heats the roof and attached beams during the day. After sunset the outside air cools quickly. The air in the screened in porch is influenced by the heat retained in the overhead roof and beams. Sort of a primitive radiant ceiling heating system. 2.5 feet is close enough for the thermometer to be affected. If you keep track, you will notice that the difference in temp is less on windy nights because of the rapid exchange of air inside the porch with fresh colder outside air. Only solution is to move the sensor.

Thank you sir. That is the conclusion I was arriving at. I would bet that the reading would probably be more accurate in the morning too. I'll find another place for it.

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I think jburns got to the crux of the issue, but I would also think that since hot air rises, it would take the longest amount of time to erode underneath the ceiling in your screened-in porch. Thus, when you put the sensor lower, the temperature dropped.

Yep, you're right, and I'm gonna do that tomorrow. That seems like the most logical solution.

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The pattern thread here is a combo of some true pattern discussion buried within a bunch of potential event discussion posts for potential within the next 5-6 days. Another bb a number here frequent has several separate threads for potential events and, as a result, its pattern disc. is pretty much pure pattern disc. What's wrong with doing it that way here? Opinions?

IMO, there should at least be a potential events catchall thread to cover those being actively discussed until if/when separate event threads are created.

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The pattern thread here is a combo of some true pattern discussion buried within a bunch of potential event discussion posts for potential within the next 5-6 days. Another bb a number here frequent has several separate threads for potential events and, as a result, its pattern disc. is pretty much pure pattern disc. What's wrong with doing it that way here? Opinions?

IMO, there should at least be a potential events catchall thread to cover those being actively discussed until if/when separate event threads are created.

+1. Hard to keep up with events and pattern in same thread. Not really a good mixture.

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