Thanks Gary, well it’s obviously consistently wrong, maybe a way for the owner to make an adjustment without having to change the elevation would be a simple solution. I study all the aviation weather stations within 70km and the sea level pressure is within 1mb so it would be very easy over a short period to reach acceptable calibration.
Like kids at Christmas we are anxious for accurate data. I’m waiting for humidity to be adjusted so I can better control the temperature inside my house. Air pressure is important to me but with so little air here I don’t notice when it’s a little off. But I’m learning. Now to figure out what to do with several million data records.
1 Like
Hi @mountwilson . Thanks for your notes and thanks for participating in the forum. As you may surmise from the title of this thread – the Continuous Learning system has not yet been deployed system-wide for pressure. Once deployed, the CL system will inspect multiple data sources in your immediate area every day and apply calibration corrections to your specific sensor if warranted. This allows us to automatically QC your data every day and keep your station in accurate calibration on an on-going basis.
Until we deploy the CL system for pressure, you are welcome to self-calibrate / fudge pressure values by changing your elevation (which amends the values in the formula used to calculate sea level pressure). Once we deploy the CL system for pressure, it won’t really matter if your elevation is fudged…the system can accommodate. However, in the interest of good data, we would encourage you to change the elevation back to your actual station elevation value. Then the CL system will automatically evaluate and calibrate the pressure within 24hrs.
Hope that helps understanding, and thanks for your patience. The CL system is new cutting-edge technology which takes time to develop and test. The goal is accurate sensor calibration based on solid science that happens automatically and consistently over time with no manual user intervention required – as it should be!
5 Likes
Is anywhere a definition of the station level and how the hight over ground for the sensors is relative to that value ?
This, for shure, only applies to those hubs with internet connection to the WFservers ?
What about those without ? May they be “updated” / sequentially calibrated as they connect to an app ?
What process is applied for those locations where totally no internet is available? Is there an option to download and store the data via Bluetooth to the app for a certain period and then upload them later with internet connection of the mobile device to the WFServers and afterwards download the calibration and apply those to the station via Bluetooth ?
And additional, but related, I was thinking about for quite a little time : is a process in development for manual firmware updates (theme like above) ?
There are two pieces of “metadata” used to determine total height above sea level: the elevation (the height of the ground relative to sea level) and the “height above ground” (the vertical distance from the ground to where your AIR is installed). More info about how pressure is displayed is here: https://help.weatherflow.com/hc/en-us/articles/115005398308-FAQs
Correct. If your station is not connected to the internet you will not benefit from the continuous learning system. We will likely add a self-calibration feature at some point in the future.
3 Likes
Pressure calibration for all stations should now be solved. See: CL System for Pressure calibration explained