> 0.6-0.8 * Petawatts * of extra energy circulating
What is that as a percentage of total energy circulating? The number by itself is meaningless - the Earth is large, it has a lot of energy, that's not news.
I can't find reliable, straightforward numbers for the total amount of energy in the atmosphere. Reddit provides one pretty believable number of the amount of energy required to raise the atmospheric temperature by 1C: 3.7x10^21 J [0]
Taking my main source's figure for the number of calories per hour that we're adding (2x10^17 calories aka 4x10^17 joules), that suggests that we are causing enough extra heat to be retained to raise the atmospheric temperature 1C every 9000 hours or roughly every year.
What is that as a percentage of total energy circulating? The number by itself is meaningless - the Earth is large, it has a lot of energy, that's not news.