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What remote-style weather station do you use to monitor coop conditions? - Page 3

post #21 of 26
Quote:
Originally Posted by mobius View Post

Two observations that have me befuddled about humidity, but first, I so hope your RIR babies are okay! Sorry to hear about the frostbite! @Beekissed
says to slather the combs with castor oil and I did that very thing yesterday to my hens!

Maybe @aart
can weigh in here about my points/confusion below?

1. Today the outside temp was about 7F this morning. It snowed lightly. On Accuweather it stated outside humidity was 77%! What is up with that? I am so confused. IF it is THAT high with these low temps, I doubt I could vent a coop to reduce ANYTHING and should just leave chickens in open air and they would STILL be at risk.

2. Yesterday I opened the Big Cleanout door (almost an entire wall) for several hours to see if that would reduce humidity during the day while the chickens were in the run...thinking that level of venting would bring inside humidity down. NOPE. Nothing changed.

I am flummoxed.

2 and 1/2. This morning temp 7F. Inside coop 17F. Inside coop humidity 72%.

SMH. I don't get this AT ALL.
The humidity term we always see reported is relative humidity. Not to get too technical, but it's the ratio of the actual vapor pressure and the saturated vapor pressure. In other words, the amount of moisture in the air and the amount of moisture the air would have if it was saturated at the specific air temperature. Now we never see vapor pressures reported on the news (although we use them often in meteorology), but you do ocassionally see dewpoint. That's the temp the air would have if it was completely saturated. When the temp equals the dewpoint you have a relative humidity of 100%. You need saturation to form clouds and precipitation aloft. At the surface you tend to get fog or diamond dust at very cold temperatures. The air can have 100% relative humidity at any temperature. Humditiy is not a good indicator of the actual amount of moisture in the air. Dewpoint is a more direct measure. A temp of 90F and dewpoint of 70F feels very oppressive to us. A temp of 30F and dewpoint of 30F just feels cold and raw. The former has a relative humidity well below 100% and the latter has a relative humidity of 100%.

On a relatively calm, clear night with an arctic airmass in place, the ground loses heat to space via radiation loss and the surface attempts to cool down toward the dewpoint. Often the amount of moisture in the air is similar outside and inside of the coop if you have good ventilation. So, if your inside coop temp tends to match the outside air temp at night, your relative humidity will run similar to the outside values. If your coop runs 10F warmer inside than out, you will tend to have a lower relative humidity in the coop assuming good ventilation. Cold wind is bad when directly hitting the birds, but it does tend to mean lower relative humidities. Keep the drafts off of the birds and they should have no problem with those types of airmasses so long as you have cold hardy breeds.

I like to put a ceramic heat emitter directed on my leghorns on the radiational cooling nights where it can be -20F with 90% RH by morning. Again, if you're near saturation outside and your coop temp is similar to the outside air, you're going to have trouble bringing your RH down much unless you add a little heat or a dehumidifier. I'm struggling with my leghorn dilemma right now too. It's currently -2F with a dewpoint of -15F and a relative himidity of 54%, but my leggies got a tough of frost bite with the outside air at 3F and 90% humidity.
post #22 of 26
And oh yeah....Davis Instruments for my weather station.
post #23 of 26

My outdoor coop monitoring station looks like this....  :lol:   Took this pic a last year? maybe to show roost height temps compared to outside temps, which were around 18* at the time. 

 

 

 

My humidity gauge looks like a rooster's comb...well....it actually IS a rooster's comb.  If his comb is fine, the humidity levels in the coop are fine....if it's not, I adjust ventilation. 

 
Matthew 10:32-33 - Whosoever therefore shall confess me before men, him will I confess also before my Father which is in heaven.  But whosoever shall deny me before men, him will I also deny before my Father which is in heaven. 

https://www.youtube.com/watch?v=zJdx9BtTob4

Reply
 
Matthew 10:32-33 - Whosoever therefore shall confess me before men, him will I confess also before my Father which is in heaven.  But whosoever shall deny me before men, him will I also deny before my Father which is in heaven. 

https://www.youtube.com/watch?v=zJdx9BtTob4

Reply
post #24 of 26
Thread Starter 

Thank you both so much I am gonna have to sleep on this,,,crunch crunch. Honestly!

post #25 of 26
Quote:
Originally Posted by Beekissed View Post

My outdoor coop monitoring station looks like this....  lol.png    Took this pic a last year? maybe to show roost height temps compared to outside temps, which were around 18* at the time. 





My humidity gauge looks like a rooster's comb...well....it actually IS a rooster's comb.  If his comb is fine, the humidity levels in the coop are fine....if it's not, I adjust ventilation. 
Bee...

Do you live in the higher terrain down there in WV? The atmosphere tends to be more mixed with elevation at night. Just curious.
post #26 of 26
Quote:
Originally Posted by Noreaster Egger View Post


Bee...

Do you live in the higher terrain down there in WV? The atmosphere tends to be more mixed with elevation at night. Just curious.

 

Five years ago I did....lived where the highest elevation in WV is located.  Now I'm living where I wouldn't consider it all that high of an elevation, though I live on a ridge top...deep holler on one side.  The humidity levels tend to be higher here than when I lived at higher elevations. 

 
Matthew 10:32-33 - Whosoever therefore shall confess me before men, him will I confess also before my Father which is in heaven.  But whosoever shall deny me before men, him will I also deny before my Father which is in heaven. 

https://www.youtube.com/watch?v=zJdx9BtTob4

Reply
 
Matthew 10:32-33 - Whosoever therefore shall confess me before men, him will I confess also before my Father which is in heaven.  But whosoever shall deny me before men, him will I also deny before my Father which is in heaven. 

https://www.youtube.com/watch?v=zJdx9BtTob4

Reply
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