Climate pledges built on flawed emissions data, Post investigation finds

Malaysia’s latest catalogue of its greenhouse gas emissions to the United Nations reads like a report from a parallel universe. The 285-page document suggests that Malaysia’s trees are absorbing carbon four times faster than similar forests in neighboring Indonesia.

The surprising claim has allowed the country to subtract over 243 million tons of carbon dioxide from its 2016 inventory — slashing 73 percent of emissions from its bottom line.

Across the world, many countries underreport their greenhouse gas emissions in their reports to the United Nations, a Washington Post investigation has found. An examination of 196 country reports reveals a giant gap between what nations declare their emissions to be versus the greenhouse gases they are sending into the atmosphere. The gap ranges from at least 8.5 billion to as high as 13.3 billion tons a year of underreported emissions — big enough to move the needle on how much the Earth will warm.

The plan to save the world from the worst of climate change is built on data. But the data the world is relying on is inaccurate.

“If we don’t know the state of emissions today, we don’t know whether we’re cutting emissions meaningfully and substantially,” said Rob Jackson, a professor at Stanford University and chair of the Global Carbon Project, a collaboration of hundreds of researchers. “The atmosphere ultimately is the truth. The atmosphere is what we care about. The concentration of methane and other greenhouse gases in the atmosphere is what’s affecting climate.”

At the low end, the gap is larger than the yearly emissions of the United States. At the high end, it approaches the emissions of China and comprises 23 percent of humanity’s total contribution to the planet’s warming, The Post found.

As tens of thousands of people are convening in Glasgow for what may be the largest-ever meeting of the United Nations Framework Convention on Climate Change (UNFCCC), also known as COP26, the numbers they are using to help guide the world’s effort to curb greenhouse gases represent a flawed road map.

That means the challenge is even larger than world leaders have acknowledged.

“In the end, everything becomes a bit of a fantasy,” said Philippe Ciais, a scientist with France’s Laboratory of Climate and Environmental Sciences who tracks emissions based on satellite data. “Because between the world of reporting and the real world of emissions, you start to have large discrepancies.”

The UNFCCC collects country reports and oversees the Paris agreement, which brought the world together to progressively reduce emissions in 2015. The U.N. agency attributed the gap that The Post identified to “the application of different reporting formats and inconsistency in the scope and timeliness of reporting (such as between developed and developing countries, or across developing countries).”

When asked if the United Nations plans on addressing the gap, spokesman Alexander Saier said in an email it is continuing its efforts to strengthen the reporting process.

“However, we do acknowledge that more needs to be done, including…