Author Topic: Two ISS's confirm temp drop.  (Read 738 times)

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Offline davidmc36

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Two ISS's confirm temp drop.
« on: January 23, 2021, 06:27:18 AM »
I'm glad I have two stations set up. Only one is published. It is the better siting. Both will get improved in summer.

Buuuuut. Both are good enough to show evening of 21st the temperature dropped 6.25 degrees Celsius in about 1/2 hour.

So I know it really happened. Several years ago I had a peak wind reading that made local news. Too bad I did not have second ISS to confirm if even close to valid. There were other peaks in the area came fairly close to mine.

With the second station closely sited I can check against publishing bad data. Only one should be published on my 1/2 acre property to avoid public data confusion.

Thoughts?

Offline TraderGary

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Re: Two ISS's confirm temp drop.
« Reply #1 on: January 23, 2021, 07:06:44 AM »
Very interesting post.
I've spent a good bit on my 6163 VP2+, WLL 6100, and Meteobridge Pro.
Of course I can't help but think about how accurate it actually is.

I see that your published site hardware is a Vantage Pro2 Plus.
Is your second site hardware identical?
If not, what is the difference?
« Last Edit: January 23, 2021, 07:10:18 AM by TraderGary »
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Offline davidmc36

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Re: Two ISS's confirm temp drop.
« Reply #2 on: January 23, 2021, 07:44:04 AM »
I guess you looked at the type on WU. They do not have all the proper choices in the drop-down. It is not a plus.

VP2 Wired is the publishing station. (2 years old)

VP2 Wireless with 24HR Fan (Old rain cone) is the secondary.

In summer when I rent a boom lift everything will get swapped about so new cone is on wireless ISS and moved to grassy spot. Slightly improved horizontal with 10 foot elevation addition for anemometer will be the goal. Running 200ft of wire, including burial, will be a pain to get anny connected to ISS. I need a wireless option. Would need to add solar or run some Cat5 to put power to the transmitter.

The BL Sunrecorder will get mounted also when I have the lift.

If I have the secondary ISS mounted close to the primary it will serve as an interesting comparison to unique events.

The anny for that one will stay purposely in a different location and due to trees is simply a different wind environment where it is located. It tells me more about what the wind is on the driveway side. The primary is the only wind location that makes the best of all compromises at my site.


Offline TraderGary

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Re: Two ISS's confirm temp drop.
« Reply #3 on: January 23, 2021, 08:08:26 AM »
Thanks for the thorough explanation.
I recall that Davis has a kit for changing a wired VP2 to a wireless.
Have you explored that possibility?
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Offline miraculon

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Re: Two ISS's confirm temp drop.
« Reply #4 on: January 23, 2021, 08:40:34 AM »
I'm glad I have two stations set up. Only one is published. It is the better siting. Both will get improved in summer.

Buuuuut. Both are good enough to show evening of 21st the temperature dropped 6.25 degrees Celsius in about 1/2 hour.

So I know it really happened. Several years ago I had a peak wind reading that made local news. Too bad I did not have second ISS to confirm if even close to valid. There were other peaks in the area came fairly close to mine.

With the second station closely sited I can check against publishing bad data. Only one should be published on my 1/2 acre property to avoid public data confusion.

Thoughts?

I have a DFARS-equipped T/H station that I can compare with the ISS temp.

I'll add the graph showing the difference temperature between these two.



This is calculated and plotted by my meteohub.

Greg H.


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Offline davidmc36

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Re: Two ISS's confirm temp drop.
« Reply #5 on: January 23, 2021, 09:59:48 AM »
Thanks for the thorough explanation.
I recall that Davis has a kit for changing a wired VP2 to a wireless.
Have you explored that possibility?

I have purchased two VP1 units for parts. Out of the parts I should be able to get the secondary ISS wireless for local monitoring and comparison.

The trouble is getting the main anemometer connected to ISS. Photo shows what I am planning. ISS B is poor looking location but tracks quite close to the other.

Main ISS to wind attachment is a challenge. Right now it is below the anemometer.  ISS will get the VP2 transmitter, 24 hr fan, and go on a pole in middle of back yard.

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Offline davidmc36

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Re: Two ISS's confirm temp drop.
« Reply #6 on: February 07, 2021, 11:13:10 AM »
....Main ISS to wind attachment is a challenge. Right now it is below the anemometer.  ISS will get the VP2 transmitter, 24 hr fan, and go on a pole in middle of back yard......

I tinkered with a few ideas and conclude any wireless idea to get direction and speed pulse to ISS from remote anemometer is too much trouble. Will just have to make the work and run some wire that can be buried.......down the mount, along the house, under-ground, up the pole to ISS.

Offline davidmc36

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Re: Two ISS's confirm temp drop.
« Reply #7 on: February 12, 2021, 02:44:57 PM »
......
I tinkered with a few ideas.....

How can I have been playing with weather stations this long and never noticed this:

https://www.davisinstruments.com/product/solar-powered-wireless-sensor-transmitter/

May even add solar and UV one day. Tx can go down at top of roof so easy to replace battery but still in view of full sun.

Now I just need spring and a boom lift.

 

anything