US President Barack Obama (L) and French President Francois Hollande (R) attend the ‘Mission Innovation: Accelerating the Clean Energy Revolution’ meeting at the COP21 World Climate Change Conference 2015 in Le Bourget, north of Paris, France, 30 November 2015. EPA/IAN LANGSDON

Ten days.

That’s how many additional days, after President Obama departed Tuesday from Paris, this pivotal United Nations’ climate change meeting will continue to go on. And that’s understandably a bit confusing — world leaders showed up and gave speeches, major clean energy investments were announced, solar energy expansions were planned. So what else could be on the agenda here?

The Paris climate meeting has indeed been heavily front-loaded — not only by the appearances of world leaders, but also by the announcement of well over 100 national climate change pledges, or “intended nationally determined contributions” (INDCs), in the months running up to the meeting. But the back end is where the world will determine just how much progress can be locked in to truly address climate change.

Understand decades of climate change negotiations and what's at stake in Paris in two minutes. (Gillian Brockell/The Washington Post)

What comes next is perhaps not as glamorous, but it’s actually critically important. Or as President Obama himself put it at a press conference Tuesday, before leaving Paris: “The task that remains here in Paris is to turn these achievements into an enduring framework for progress that gives the world confidence in a low-carbon future.”

The quest to ensure strengthening of country commitments.

To better understand what still has to happen in Paris, consider that the existing INDCs, in their entirety, are generally agreed to be inadequate to keep the warming of the planet below the target of 2 degrees Celsius above pre-industrial levels. The United Nations Framework Convention on Climate Change has floated the idea that these pledges might be able to hold warming to 2.7 degrees Celsius. Other assessments have been more pessimistic.

So one key component of the negotiations is to come up with a mechanism that will ensure that countries strengthen their commitments over time.

What’s needed is “some agreement where we agree to revisit the INDCs, say every five years, with the hope that we can ratchet them up to the point where they really will bring the problem under control. To me, that would be the most important positive outcome,” said Philip Duffy, president of the Woods Hole Research Center.

Absolutely critical to this, said David Waskow, director of the International Climate Initiative at the World Resources Institute, is that commitments are first revisited in 2020, not 2025 or later, and that much more happens than simply taking stock of where countries are at that time. “The notion of coming back to the process in the 2020 time frame is really critically important,” Waskow said. “Waiting for 10 years really would be waiting for too long.”

The quest to know what everybody is actually emitting.

Also very important in the Paris agreement is setting in place some type of protocol or system for ensuring that countries are accurately and thoroughly reporting their emissions. This is wonky but quite important. Indeed, it was in many ways epitomized this very year by the carbon explosion that happened in Indonesia, as raging peat fires placed an estimated additional 1.75 gigatons of carbon dioxide into the atmosphere.

We need to know what countries’ forests, peat bogs, permafrost and so on are doing to the climate — but most important, we also need to know what their fossil fuel burning is doing. However, as of now, there are widely varied levels of reporting of emissions, and disparate abilities to even measure them.

That’s why one of the critical issues in Paris is “exactly what does the verification scheme look like,” said John Coequyt, head of international programs at the Sierra Club. “What we’re hoping to get, and what the U.S. is pushing for, is something that is the same for all countries. But, some developing countries have time before they have to meet the same level of requirements, and this is where the capacity building effort kicks in. There are countries that are just not prepared, they haven’t measured their emissions, they’re not in a position to carefully account for their emissions, and they aren’t a substantial driver of global warming. So the idea is to get everyone on the path to the same verification scheme.”

A good goal would be able to see, on a yearly basis, whether a given country’s emissions reduction pledges are actually, you know, reducing emissions.

The quest to fund a clean energy transition for developing countries.

And then, finally, there’s the matter of climate finance. In the Copenhagen accord in 2009, developed countries pledged to “commit to a goal of mobilizing jointly USD 100 billion dollars a year by 2020 to address the needs of developing countries.” This was both for climate change adaptation but also for other measures, like technology transfer and capacity building, and installing a tremendous amount of clean energy.

President Obama spoke from a climate change summit in Paris and called for nations to tackle climate change now. In the face of growing terrorism threats, "This one trend, climate change, affects all trends," the president said. (AP)

In some ways, this may be the most important part of the Paris agreement. “How the developing world develops, and the carbon intensity of their development, it’s really the whole story,” said Duffy, of the Woods Hole Research Center.

One critical issue here, noted the World Resources Institute’s Waskow, will be ensuring that the money — meant to come from both the public and private sectors — is distributed evenly across different areas, and in particular, that funding adaptation to climate change does not get short shrift.

The question of irreversible climate harm — and who pays for it.

Finally, there is the contentious issue of “loss and damage,” or how to deal with the fact that we’ve already unleashed some impacts of climate change that are likely to be damaging and also irreversible, such as rising sea levels. In particular, small island nations have suggested that the countries responsible for the large bulk of emissions — like the U.S. — ought to help them cope with these damages.

The U.S. has not been willing to go there — but Waskow thinks the ultimate Paris agreement has to find some way of grappling with this problem of very real climate harm.

So in sum: The world isn’t going to be suddenly saved because of Paris. Rather, thanks to the current momentum going into the meeting, it is more accurate to say that the world might be put on the path to be saved — or rather, damaged less.

Ultimately, one of the most important things Paris may accomplish is allowing us to measure where we actually are when it comes to trying to minimize harm from climate change and ultimately, over decades, get the problem under a measure of control.

Clarification: A previous version of this article stated that “loss and damage” involved a concept of compensation for damages, by wealthier and higher emitting countries. Actually, while the concept does focus on support, including potentially financial support, for countries that suffer damages, it does not necessarily imply any liability. The article has been clarified accordingly.