Magnetic variation 2020
Oct 24, 2019 17:02:20 GMT
Post by Herve Sors on Oct 24, 2019 17:02:20 GMT
I've made available a new magdec.bgl file valid on 1-January-2020 you may wish to retrieve here
www.aero.sors.fr/navaids.html
However, magnetic variation calculations were performed using the latest IGRF-12 model that will expire in a couple of months and be replaced by the new IGRF-13 model valid from 2020 to 2025. The alternative WMM2020 model will also be published in December 2019
Consequently, if you decide to use this interim 2020 file, I strongly suggest you update it as soon as the IGRF-13 based file is available (probably sometime in december)
This will be indicated on my site
Automatic update proposal will also be included in the installer of the FSX/P3D World Navaids package
www.aero.sors.fr/navaids.html
However, magnetic variation calculations were performed using the latest IGRF-12 model that will expire in a couple of months and be replaced by the new IGRF-13 model valid from 2020 to 2025. The alternative WMM2020 model will also be published in December 2019
Consequently, if you decide to use this interim 2020 file, I strongly suggest you update it as soon as the IGRF-13 based file is available (probably sometime in december)
This will be indicated on my site
Automatic update proposal will also be included in the installer of the FSX/P3D World Navaids package