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Author Topic: Formulas  (Read 494 times)

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Offline weatherguru

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Formulas
« on: October 13, 2017, 06:48:56 AM »
Hi Brian,
Just wondering what the actual formulas you use (or where they come from) for the following parameters please:
Cloud height
Cloud temperature
Air Density
Density Altitude
Absolute humidity
Vapour pressure

Regards
Guru

Offline weatherguru

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Re: Formulas
« Reply #1 on: October 14, 2017, 12:07:44 AM »
Hi all,
Anyone else know anything about these please?

Regards

Guru

Online Weather Display

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Re: Formulas
« Reply #2 on: October 14, 2017, 12:15:49 AM »
Is this for WD custom tags,or?
It's not very clear

Offline weatherguru

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Re: Formulas
« Reply #3 on: October 14, 2017, 12:27:55 AM »
Yes, but more so the formula behind the tag i.e( Rel hum = x/y * 5.6 e)

Online Weather Display

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Re: Formulas
« Reply #4 on: October 14, 2017, 04:37:58 AM »
why do you want to know?

Offline weatherguru

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Re: Formulas
« Reply #5 on: October 14, 2017, 05:22:48 AM »
One..these formulae aren't protected equations..Two.. I would like to calculate these values for some of my historical data.

Offline makada

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Re: Formulas
« Reply #6 on: October 14, 2017, 10:49:28 AM »
...ive got a feeling you dont get an answer on this...
Campbell Scientific CR1000 Datalogger
Mierij Meteo Windspeed and Direction sensor
Mierij Meteo Rain
Vaisala Barometer
Kipp&Zonen Pyranometer
Rotronic HS3 Temperature/Humidity
https://www.wunderground.com/personal-weather-station/dashboard?ID=IZEELAND75

Offline hankster

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Re: Formulas
« Reply #7 on: October 14, 2017, 11:31:31 AM »
Google is your friend.

Offline makada

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Re: Formulas
« Reply #8 on: October 14, 2017, 11:38:14 AM »
Google is your friend.
Dont think google knows what formulas wd uses....
Campbell Scientific CR1000 Datalogger
Mierij Meteo Windspeed and Direction sensor
Mierij Meteo Rain
Vaisala Barometer
Kipp&Zonen Pyranometer
Rotronic HS3 Temperature/Humidity
https://www.wunderground.com/personal-weather-station/dashboard?ID=IZEELAND75

Offline windgust

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Re: Formulas
« Reply #9 on: October 14, 2017, 03:45:18 PM »
I would look at the NOAA all the formulas are there, They would be the ones NOAA uses.

Offline makada

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Re: Formulas
« Reply #10 on: October 14, 2017, 04:29:05 PM »
Thats not the question,  its which ones wd uses....

"Hi Brian,
Just wondering what the actual formulas you use ....."
Campbell Scientific CR1000 Datalogger
Mierij Meteo Windspeed and Direction sensor
Mierij Meteo Rain
Vaisala Barometer
Kipp&Zonen Pyranometer
Rotronic HS3 Temperature/Humidity
https://www.wunderground.com/personal-weather-station/dashboard?ID=IZEELAND75

Online Weather Display

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Re: Formulas
« Reply #11 on: October 14, 2017, 07:13:44 PM »
there is no need people to be so rude on this forum, Makada
why do you think I would not provide an answer?
the problem is it takes time to search for all the formuals for each question , in the code
and so when I have the spare time I will look at answering the post

Offline makada

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Re: Formulas
« Reply #12 on: October 14, 2017, 07:19:26 PM »
Im glad your finally ....ah nevermind...
I think its rude not to answer someone for three months,  anyway, back to topic...
« Last Edit: October 14, 2017, 07:21:20 PM by makada »
Campbell Scientific CR1000 Datalogger
Mierij Meteo Windspeed and Direction sensor
Mierij Meteo Rain
Vaisala Barometer
Kipp&Zonen Pyranometer
Rotronic HS3 Temperature/Humidity
https://www.wunderground.com/personal-weather-station/dashboard?ID=IZEELAND75

Offline hankster

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Re: Formulas
« Reply #13 on: October 14, 2017, 07:26:11 PM »
Im glad your finally ....ah nevermind...

Actually it's:

I'm glad you're finally ...ah nevermind

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Re: Formulas
« Reply #14 on: October 14, 2017, 07:47:08 PM »
I am only 1 person though
I do try my best
to answer all the emails I get and forum questions and improve the programs across multiple platforms, which takes a lot of time
I am sorry that its not what you expect

 

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