WASHINGTON — Emissions of planet-warming carbon dioxide from fossil fuels hit a record high in 2019, researchers said Tuesday, putting countries farther off course from their goal of halting global warming.

The new data contained glimmers of good news: Worldwide, industrial emissions are on track to rise 0.6 percent this year, a considerably slower pace than the 1.5 percent increase seen in 2017 and the 2.1 percent rise in 2018. The United States and the European Union both managed to cut their carbon dioxide output this year, while India’s emissions grew far more slowly than expected.

And global emissions from coal, the worst-polluting of all fossil fuels, unexpectedly declined by about 0.9 percent in 2019, although that drop was more than offset by strong growth in the use of oil and natural gas around the world.

Scientists have long warned, however, that it’s not enough for emissions to grow slowly or even just stay flat in the years ahead. In order to avoid many of the most severe consequences of climate change — including deadlier heat waves, fiercer droughts, and food and water shortages — global carbon dioxide emissions would need to steadily decline each year and reach roughly zero well before the end of the century.

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