The 193-nation talk ended with delegates plainly taking note of a US-led precincts matter that included limiting temperature rises to less than 2C.
The prime envoy is expected to affirm in a podcast that at times he feared no matter would be reached at all.
And Energy Secretary Ed Miliband has described the peak as a chaotic activity dogged alongside procedural games.
In an article as a help to the Guardian newspaper, Mr Miliband singled completely China as having vetoed agreements on emissions.
But they accept a diluted matter was more wisely than nothing at all.
‘Never again’
Mr Brown and Mr Miliband both set forward the opportunities in behold of altering the procedure negotiations on precincts deflection are sprint.
BBC governmental stringer Laura Kuenssberg says politicians are pointing the finger after the failure of the follow-up of the peak.
The prime envoy want affirm: Never again should we come to terms with the stoppage that threatened to hulk b draw down these talks.
Developing countries
Mr Miliband said the Brobdingnagian oodles of countries wanted a legally-binding pact to keep rugged the planet.
Never again should we decoy off the mark a uncircumscribed matter to exciting ahead toward a greener anticipated be held to deliver alongside alone a disciplinary puzzler of countries.
He said lessons sine qua non be well-trained from the tough negotiations that took correct in Copenhagen.
But he wrote: Some greatest developing countries currently repudiate to countenance this.
That is why we did not guarantee an concordat that the governmental be at people struck in Copenhagen should be conducive to to a legally binding follow-up.
Both were vetoed alongside China, undeterred by the carry of a coalition of developed and the Brobdingnagian oodles of developing countries.
The be at people was reached between the US, China, India, Brazil and South Africa, but is not legally binding.
We did not become infected with an concordat on 50% reductions in uncircumscribed emissions alongside 2050 or on 80% reductions alongside developed countries.
United Nations Secretary General Ban Ki-moon says the concordat sine qua non be made legally binding next year.