Some climate scientists said that the world's goal of restricting global warming to just two degrees Celsius of normal heat increase may be insufficient.

Established by 1970s studies, the two degrees above pre-industrial levels temperature target has come up many times in climate change talks, including the Stern review and the "Copenhagen Agreement" during 2009 United Nations climate change conference.

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At the previous United Nations Framework Convention on Climate Change convened in Lima, Peru in December, 2014, there were a few climate scientists that voiced their apprehensions on permitting the climate to warm by 2 degrees Celsius. Some recommend the global warming goal is insufficient and must instead be positioned at just 1.5 degrees Celsius or even lower.

The two degree standard still guides changes in weather outlines, a rise in sea levels, heat waves, deluges, dry spells, and other tremendous natural calamities, particularly in the tropics, polar areas and high peak areas.

"A low temperature target is the best bet to prevent severe, pervasive, and potentially irreversible impacts while allowing ecosystems to adapt naturally, ensuring food production and security, and enabling economic development to proceed in a sustainable manner," said Petra Tschakert, a professor at Penn State University and a lead author of an assessment report for the UN's Intergovernmental Panel on Climate Change.

"The consensus that transpired during this session was that a 2°C danger level seemed utterly inadequate given the already observed impacts on ecosystems, food, livelihoods, and sustainable development," said Tschakert.

She said this lower temperature limit is necessary for the survival of flora and fauna species, including the lives of hundreds of thousands of human beings. Tschakert isn't the only expert championing the goal lower.

The Earth is already experiencing a 0.8 degrees Celsius increase in temperature and the widespread negative impacts can be blatantly seen.

TagsUN Scientists Propose to Lower the 2-Degree Climate Goal, climate scientists, global warming, 2-Degree Climate Goal, 1.5 degrees Celsius