Dear @JanStreffing, would it be possible to document in the HowTo of your orbit-routine the reference point for longitude of perihelion? For example, if I wanted to run mid-Holocene simulations, would the longitude of perihelion be 0.87°, based on the vernal equinox as used in PMIP and other sources, or would it rather be 180.87°, as in ECHAM?
Dear @JanStreffing, would it be possible to document in the HowTo of your orbit-routine the reference point for longitude of perihelion? For example, if I wanted to run mid-Holocene simulations, would the longitude of perihelion be 0.87°, based on the vernal equinox as used in PMIP and other sources, or would it rather be 180.87°, as in ECHAM?