UN secretary-general Ban Ki-moon arrives for the UN climate change conference in Lima. Photograph: Enrique Castro-Mendivil/Reuters
（2014-12-09）UN secretary-general Ban Ki-moon told governments at climate talks in Lima on Tuesday there was no “time for tinkering” and urged a radical shift to greener economies.
Ban said there was still a chance of limiting global warming to an internationally agreed ceiling of 2C above pre-industrial times in the hope of limiting floods, droughts, desertification and rising sea levels.
“But the window of opportunity is fast narrowing,” he told the delegates of about 190 nations.
“This is not a time for tinkering; it is a time for transformation,” he said. Despite signs of progress he is “deeply concerned that our collective action does not match our common responsibilities.
“We must act now,” he said.
The talks in Lima have been scheduled for 1-12 December and are working on a deal due to be completed in Paris in a year’s time, to limit the world’s greenhouse gas emissions
He welcomed signs of action, including more businesses favouring carbon markets, and a day of marches in September that he said had mobilised hundreds of thousands of people in the streets “from Manhattan to Mumbai to Melbourne”.
Ban also welcomed pledges by developed nations totaling almost $10bn (￡6.4bn) to a new Green Climate Fund, due to help developing nations cut emissions and adapt to climate change that puts pressure on food and water supplies.
He called on countries that have not yet pledged “to consider making an ambitious financial commitment in Lima”. Australia is the only major developed nation that has not contributed to the fund, preferring to focus on domestic initiatives.
Ban urged developed nations to “meet and exceed” a goal set in 2009 of mobilising at least $100bn a year, in public and private finance, by 2020 to help developing nations.
The Lima talks are trying to work out draft elements of a deal for Paris next year, but face disagreements about what should be included.
Many developing nations, for instance, would like a target of cutting world greenhouse gas emissions to a net zero by 2050. Opec nations, worried about a loss of income from a shift to renewable energy, favour much vaguer long-term goals.