so you are grafting ice core data onto thermometer or instrument records...
and you think that means man made co2 is causing warming?
that is statistical noise caused by a change in measurement...
here is context... we are close to the bottom of the historical record for temps and co2... just a bit from where all plants die off because of too little CO2.
yet you think your chart shows something?
til you have some real science showing man made co2 causes warming your chart simply shows instruments vs proxy data needs to be better reconciled.
especially since the current proxy data contraindicates that temperature spike.
look at that chart below... in context our temperature and our co2 are very low.