Negotiators reach overtime deal to keep Paris pact alive

KATOWICE, Poland — Diplomats from nearly 200 countries reached a deal Saturday to keep the Paris climate agreement alive by adopting a detailed set of rules to implement the pact.

The deal, struck after an all-night negotiating session, will require every country in the world to follow a uniform set of standards for measuring their planet-warming emissions and detailing their climate policies. And it calls on countries to step up their plans to cut emissions ahead of another round of talks in 2020.

It calls on richer countries to be much clearer about the aid they intend to offer to help poorer nations install more clean energy or build resilience against natural disasters. It also builds a process in which countries that are failing to meet their emissions goals can ask for help in getting back on track.

The negotiations over the Paris “rule book” were frequently bogged down by intense political disputes inside a convention center here in the heart of Poland’s coal country.

On Friday, after two weeks of debate, Brazil’s delegation held up the talks all through the night because the country’s negotiators were opposed to proposed changes in rules around carbon trading markets, according to negotiators there.

Earlier in the talks, a huge fight over climate science nearly threatened to derail the negotiations altogether — with the Trump administration, which has vowed to abandon the Paris deal, at the center.

Despite the clashes, though, observers said U.S. negotiators ultimately worked constructively behind the scenes with other parties, including with China on transparency rules.

The two countries were at odds because China had insisted on different reporting rules for developing countries.

Brad Plumer is a New York Times writer.