IFS manuals for all model cycles
IFS manuals are available here.
The manuals on 'Dynamics & Numerical Procedures', 'Physical Processes' and 'Technical & Computational Procedures' are the ones most appropriate for OpenIFS.
ECMWF related articles of interest
Numerics of physical parameterization,
Beljaars et al, Proceedings of 2004 ECMWF seminar on Advances in Numerical Techniques.
Ocean wave model output parameters (Jean-Raymond Bidlot - 2016).
Radiation quantities in the ECMWF model (Robin Hogan)
Diagnostics
Manuals provided by GmapDoc website (MeteoFrance)
FULLPOS 'In-model' post-processing
DDH 'In-model' budgets on user-defined domains
Code standards for OpenIFS
Code in OpenIFS should be written to follow the conventions in use at ECMWF. Please follow this link to the document maintained by MeteoFrance: http://www.umr-cnrm.fr/gmapdoc//spip.php?article213&lang=en