What are the uncertainties in estimates of climate sensitivity?

Jul 14, 2021 ... It found fires produced about 1.5bn tonnes of CO2 a year, with forest growth removing 0.5bn tonnes. The 1bn tonnes left in the atmosphere is ... Feb 2, 2020 ... Their results showed that 2.7 billion years ago, carbon dioxide comprised at least 70 percent by volume of Earth's atmosphere. Assuming the Sun ... Sep 17, 2023 ... Mars' atmosphere is over 100 times thinner than Earth's and is primarily composed of carbon dioxide, nitrogen and argon gases. Jun 1, 2020 ... ... percent if atmospheric transport is perfectly known (8). In this ... Peters et al., An atmospheric perspective on North American carbon dioxide ... Sep 4, 2020 ... The ocean is a sink for ~25% of the atmospheric CO2 emitted by human activities, an amount in excess of 2 petagrams of carbon per year (PgC ... Sep 21, 2023 ... Worldwide, wildfires in 2021 released about 1.8 billion tons of CO2 into the atmosphere, compared to about 38 billion from fossil fuels and ... Jan 15, 2025 ... The average global atmospheric CO₂ concentration has increased by almost 20 percent since 1990, and set a record high in 2022. ... atmosphere by about 10 percent since the beginning of the century. Roger ... atmosphere from the infrared radiance of atmospheric carbon dioxide. Nov 12, 2015 ... When carbon dioxide CO 2 is released into the atmosphere from the burning of fossil fuels, approximately 50% remains in the atmosphere, while 25% is absorbed ... 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 ...