With the clock ticking to a year-end UN conference in Paris aimed at sealing a global climate agreement, nations have been submitting plans on how they will curb emissions or take other action after 2020.
Climate chief Christiana Figueres repeated her warning that the plans would not succeed in limiting a temperature rise to two degrees (3.6 Fahrenheit) above pre-industrial levels, a UN-blessed goal that scientists say will spare the planet the worst consequences of warming.
The action plans "have actually brought the trajectory from where we were a few years ago -- which was trending toward four to five degrees," she told reporters at the UN headquarters.
"We're now down into the three-degrees range," she said.
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Figueres said that the trajectory showed that countries needed to focus for the Paris meeting on the timing of future actions, and also to fill a shortage in funding to poor countries expected to be hit hardest by droughts and other effects of climate change.
Figueres was speaking at the announcement of awards by the UN Development Program to 21 initiatives by indigenous people credited with fighting climate change or otherwise protecting nature.
Actor and activist Alec Baldwin said that the efforts showed how local communities, many facing tough odds, can help achieve the global goal of fighting climate change.
"We recognize that Paris is not mission impossible; it is mission critical," he said.