Limiting global warming to 1.5 degrees Celsius will not be possible without major intervention by the international community, Greenpeace's executive director Jennifer Morgan said Thursday.

During a press conference of the Climate Action Network (CAN), Morgan said the international community is "absolutely not on track" to meet its goal and countries would have to amend their protection goals in order to prevent global warming upwards of 3 degrees Celsius.

The comments come as leading climate researchers meet in South Korea to discuss limiting global warming at the 48th session of the Intergovernmental Panel on Climate Change (IPCC).

The signatories of the Paris Agreement have resolved to limit global warming to below 2 degrees Celsius, preferably preventing it to rise above 1.5 degrees.

The IPCC was asked to write a special report on the implications of 1.5 degrees of global warming and how further warming could be avoided. The report will be published next Monday, after the IPCC session in Incheon.

Most researchers agree that if nothing is done to reduce greenhouse gas emissions, then the Earth will continue along a path of global warming that could reach up to 3 or 4 degrees Celsius above pre-industrial levels.