I'm not sure what you mean by "Planetary Scale" here—where is that being discussed?
Are we discussing weather? That has planetary scale cycles.
Are you suggesting we can't make any claims about this hurricane?
Or that we can only assess weather in millennium level increments?
Trying to understand the point behind your comment.
So you're referring to things like El Niño and La Niña?
No. 500 year storms. 1000 year storms. etc. Though the sample time is short on these events we do possess recorded history of extreme weather events. From pre-industrial times. Which suggests the potential for off-planet causes for these phenomena. Which nearly all climate “scientists”completely disregard. Such a lack of curiosity disqualifies such an avenue of “science”.