Barometer predictions

[Cognac]

Hi,

I have 4 barometer sensors in my Domoticz. 2 obtained from WU, 1 BMP180 directly connected to my RPI and 1 BME280 connected to my ESP8266.

All barometers are in the same range of air pressure, as you can see on the screenshot. However all sensors report a different prediction. How come? Is there a way to adjust this prediction?

Thanks in advance!

domoticz barometer prediction.jpg (158.11 KiB) Viewed 2622 times

[annefmoreno]

A barometer is a scientific instrument used in meteorology to measure atmospheric pressure. Pressure tendency can forecast short term changes in the weather. Numerous measurements of air pressure are used within surface weather analysis to help find surface troughs, high pressure systems and frontal boundaries.

[Cognac]

Anyone?

[u01pei]

Hi,

I have 4 barometer sensors in my Domoticz. 2 obtained from WU, 1 BMP180 directly connected to my RPI and 1 BME280 connected to my ESP8266.

All barometers are in the same range of air pressure, as you can see on the screenshot. However all sensors report a different prediction. How come? Is there a way to adjust this prediction?

Thanks in advance!

I once attempted to create a script for prediction and so I searched the internet for how to calculate the prediction for all the weather types. I found that there are some differences in the data used. I don't recall the exact data, but in example one site would call a 10 hPa/hour increase a normal change rate, while the next site would call this same rate rapid.

So my guess is your sensors all use different calculations for the prediction.

[janus]

You can adjust them when you change the hight of your weather station a little bit