Expedition Navigation Software 
1 of 1- philippe
- Expert
Offline - Registered: 3/25/2022
- Posts: 50
Model observation error
How to use this tool. I always have a empty table.
I tried with 1 model uploaded... I tried with several...
Thank for your help
- rvsail
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- Registered: 7/06/2022
- Posts: 32
Re: Model observation error
Do you have observations downloaded that are in the area of the grib file?
- philippe
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- Registered: 3/25/2022
- Posts: 50
Re: Model observation error
I have the TWD, TWA and Barometer of my boat.
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Thread Starter- rvsail
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- Registered: 7/06/2022
- Posts: 32
Re: Model observation error
It works by comparing the downloaded weather station observations with the grib files rather than your own boats data.
On the weather panel there is a button for downloading the observations.
- Nick
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- Registered: 9/16/2015
- Posts: 2,769
Re: Model observation error
It uses weather observations and the latest data for the boats.
Unlike Model accuracy, it is just a snapshot in time to doesn't mean much with just your boat.
- philippe
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- Registered: 3/25/2022
- Posts: 50
Re: Model observation error
Thank you for your answers.
With downloading observation, it's work.
I understand it's a snapshot at the current time. But as I have a significant number of observation and plenty grib array values, where is the difference calculated? At nearest observation of the boat?
The difference of pressure is not calculated?
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Thread Starter- Nick
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Re: Model observation error
Where the observations are ...
- philippe
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- Registered: 3/25/2022
- Posts: 50
Re: Model observation error
I have downloaded the observation of the different stations ok UK and France, + the one of the boats in the channel. So several observation stations
In the results, I have one line for Arome model and a second one for UKV. For witch station is it ?
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Thread Starter