Cika wannan jumla: An kafa tsarin alkawari da bita a Copenhagen a taron kolin Cancún na 2010. An kara karfafa tsarin a cikin shekarun da suka kai ga
Taron Paris na 2015, duk da cewa ba a sake kiransa "Alkawari da bita", tare da alkawurran da aka yiwa lakabi a hukumance a matsayin Gudummawar Ƙasa (NDCs).