International efforts, such as the Paris Agreement, aim to reduce greenhouse gas emissions. Our climate is changing because of greenhouse gases released into the atmosphere.The researchers estimate that the world's emissions of carbon dioxide will exceed 40 billion tons in 2023, including nearly 37 billion tons from fossil fuels. 2024. Languages. Spanish. Table 1 details GHG emissions in million metric tons (MMT) of carbon dioxide equivalents. (CO2e) for all economic sectors. The United States submitted its target to cut net greenhouse gas emissions to the United Nations Framework Convention on Climate Change (UNFCCC). In all other affected counties, the focus is the reduction of carbon monoxide, hydrocarbon, and oxides of nitrogen emissions from designated vehicles. 01.25. Sort out international agreements. Table 30-4 (continued).