Long-Term Trends in Global Carbon Dioxide Concentration:
Human-induced carbon emissions, primarily from fossil fuel combustion, have profoundly impacted and altered the global carbon cycle. Since the 1980s, the average global atmospheric carbon dioxide concentration has rapidly increased from 335 ppm to 423.1 ppm. Observations over ten-year periods reveal an overall upward trend in the growth rate of global atmospheric CO₂ concentrations. From 2010 to 2020, the average annual growth rate exceeded 2 ppm/year for the first time, with the growth rate reaching a historical peak of approximately 2.9 ppm/year in 2015. The growth rate in 2023 was about 2.85 ppm/year, remaining high compared to the past seven years.
Source：gml.noaa.gov
Global Carbon Emissions Status for 2024:
Comparing the first half of 2024 to the same period in the previous year, global carbon emissions have increased by approximately 210 million tons (210 Mt). The power generation sector contributed the most to this increase (0.8%), while emissions from the industrial and residential sectors saw slight reductions. Among major global economies, the U.S. experienced a 2.9% increase in carbon emissions compared to last year, with the largest contribution coming from land transportation. China's emissions increased by 0.3% compared to the previous year, with power generation emissions rising by 47.7 million tons and industrial emissions decreasing by 44 million tons. India's emissions rose by 120 million tons, with power generation emissions accounting for a substantial increase of 87.7 million tons. The major EU countries saw a significant reduction in emissions, averaging a 5.7% decrease. Countries such as Russia (+4.2%) and Japan (+2.4%) also experienced some growth.
By regional comparison, the significant decrease in carbon emissions in major EU countries contrasts sharply with the rising emissions in other countries. This discrepancy is largely due to the EU's power generation sector, which saw a reduction of 19% to 40% compared to the previous year. Germany had the highest reduction at 8.9%, while India saw the highest increase at 8.2%.
Source：carbonmonitor.org
