Fossil fuel emissions are estimated to grow this year by 4.7 percent in China, 6.3 percent in India and 2.5 percent in the United States and decrease by 0.7 percent in the EU.
The second year in a row of growing carbon emissions is a "big worry", New Zealand's leading carbon cycle expert says.
Speaking during the United Nations' COP24 climate change conference in the southern Polish city of Katowice, Mateusz Morawiecki said: "I can proudly and without hesitation say that Poland is one of the leaders when it comes to measures undertaken to stop global warming".
After several years of little growth, global emissions of heat-trapping carbon dioxide experienced their largest jump in seven years, discouraging scientists.
Last year, India's Carbon dioxide emissions had grown by 3.7 per cent, much lower than the average of about 6 per cent for the last 10 years, and this report had then said that it could have been partially attributable to demonetisation and GST.
Well Mark... the COP24 conference is being described as the most important gathering on climate change since the 2015 Paris agreement. "We can't afford to delay action any further".
Study lead author Corinne Le Quere, a climate change researcher at the University of East Anglia in England, said the increase is a surprising "reality check" after a few years of smaller emission increases.
For the USA, it was a combination of a hot summer and cold winter that required more electricity use for heating and cooling. The burning of coal, oil and gas release carbon dioxide, which warms the Earth.
"According to IPCC (Inter-governmental Panel on Climate Change), to limit warming well below 2 degree Celsius, CO2 emissions should decline by about 20 per cent by 2030 and reach net zero around 2075; to limit warming below 1.5 degree Celsius, CO2 emissions should decline by 50 per cent by 2030 and reach net zero by around 2050..."
"So, Paris commitments are not enough to reach the Paris goal". In U.S., use of coal actually fell but fossil fuels used in vehicle journeys rose by 1.4%. There was a decrease from the European Union, but only by 0.7 percent.
Use of coal - the biggest carbon emitter - is rising.
"It was the first time where people's choices and intentions to reduce emissions were being seen in the global (carbon) budget, as opposed to people responding to economic pressure", Mikaloff-Fletcher said. At the same time, Earth has warmed on average about two-thirds of a degree, according to the U.S. National Oceanic and Atmospheric Administration.