Committed global warming is one that continues after GHG emissions are held constant until a new thermal balance is achieved (much like turning a running faucet from hot to cold doesn't immediately change the water temperature, because there is still hot water in the pipeline). As the planet warms, climate tipping points (e.g., loss of the major rainforests) becomes increasingly likely. Jesse F. Abram et al presented 3 scenarios for how the global mean temperature could rise and trigger tipping point events. One represents an increased use of fossil fuels, another represents rapidly reaching net zero emissions, and a third closely matches the current trajectory.