1. Emission inventory data for GHG
US: Energy-related CO2 emissions account for 86% of all greenhouse gases in the United States. After three years of continuous decline, these emissions rose in 2018. It is estimated that the United States economy-wide emissions increased by 1.5% to 2.5% in 2018. Driving this trend are the emissions from the transportation and industrial sectors, which increased in 2017 and accelerated in 2018 due to strong economic growth. While the decrease in economic activity due to the pandemic of 2020-21 led to a drop in greenhouse gas emissions, this downturn is not expected to continue.
NJ: New Jersey's total gross greenhouse gas emissions in 2018 reached 105.1 million metric tons (MMT) of carbon dioxide equivalent, or CO2 e, which is a term used to compare the emissions from various greenhouse gases based on their Global Warming Potential to the reference gas of CO2, which has a Global Warming Potential of 1 (NJDEP 2019a). However, it is also estimated that the state's land sector (forests and associated land cover) sequestered the equivalent of 8.1 MMTCO2 e resulting in net greenhouse gas emissions of 97.0 MMTCO2 e for 2018. The bulk of the 2018 greenhouse gas emissions were energy related, coming from transportation, electric generation, commercial and residential heating and industrial sources. The goal for 2050 is to get to 24.1 MMTCO2 e which is an 80% reduction below our 2006 baseline (N.J.S.A. 26:2C-37).
The transportation sector remains the largest source of greenhouse gas emissions in the state with 40.6 MMTCO2 e in 2018, which is 42% of all CO2e in NJ. Medium and heavy-duty vehicles are responsible for approximately 35% of all on-road greenhouse gas emissions, which make up the bulk of the transportation sector contribution. To visualize the contribution of the transportation sector to statewide greenhouse gas emissions, look at the bar chart in Figure 3.6. New Jersey Greenhouse Gas Emission Trends by Sector. https://www.nj.gov/dep/climatechange/docs/nj-scientific-report-2020.pdf#page=34
Note: A carbon sink is any resevoir (typically land or ocean) that absorbs and stores carbon for an indefinite period thereby lowering concentrations in the atmosphere.