WASHINGTON: US President Donald Trump's pullout from the Paris Agreement will push up global temperatures nearly half a degree Celsius (0.9 degrees Fahrenheit) by 2100, according to a report released Wednesday at UN climate talks in Bonn. If all countries -- including the United States -- honour carbon-cutting pledges under the 196-nation treaty, the world would see 2.8 C of global warming above pre-industrial levels, the Climate Action Tracker (CAT) research group had previously calculated. That is not nearly good enough to avoid climate catastrophe, scientists say. The Paris pact, adopted in 2015, calls for capping the rise at "well below" 2 C, and even 1.5 C if possible, to avoid climate-addled future of extreme drought, deadly heatwaves and superstorms made more destructive by rising seas. But if the US abandons its goals for reducing greenhouse gases, set under the Barack Obama administration, the end-of-century thermometer will climb even further to 3.2 C, the report showed. "This is largely due to the fact that the United States is walking away from its 2030 target, and long-term 2050 goals," CAT said in a statement. In 2015, the United States made a voluntary commitment to cut the country's emissions 26-28 percent below 2005 levels by 2025. Last year, it also laid out a "mid-century strategy" that would see it's emissions slashed 80 percent compared to a 2005 benchmark.