What are the different perspectives on the role of human agency in shaping the future of the Earth system?

The global average carbon dioxide set a new record high in 2023: 419.3 parts per million. Atmospheric carbon dioxide is now 50 percent higher than it was before ... Jun 16, 2011 ... ... atmosphere while about 45 percent has stayed in the atmosphere. Eventually, the land and oceans will take up most of the extra carbon dioxide ... Feb 11, 2009 ... ... percent of those generated by today's ... Another indication that human emissions dwarf those of volcanoes is the fact that atmospheric CO2 ... Feb 1, 2022 ... ... CO2, which is devoid of 14C, enters the atmosphere. We have ... Our results show that the percentage of the total CO2 due to the use ... The carbonate ion concentration of surface sea water will decrease by an estimated 30 percent with a doubling of atmospheric CO 2 from preindustrial levels (280 ... ... as a percentage of the gas in air by volume (1% = 10,000 ppmv). This is in contrast to other volcanic gases. Exposure Effects. Carbon dioxide (CO2) is a ... Aug 8, 2016 ... It varies based on the individual and the study. Here is a very comprehensive study. Some excerpts: > Submarine crew are reported to be the ... Oct 18, 2019 ... Less well-known is their importance to the ocean's carbon sink, where CO2 is removed from the atmosphere ... per cent of the available krill and ... Carbon Dioxide in the Atmosphere is Increasing ... The amount of CO₂ in the atmosphere has increased more than 20% in 45 years, owing largely to human activities, ... Feb 3, 2025 ... CO2 atmospheric dry molar fraction (ppmv), averaged over a calendar year Ice cores Mauna Loa 1800 1820 1840 1860 1880 1900 1920 1940 1960 ...