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Inside the troposphere, the CO 2 drops with altitude approximately exponentially, with a typical length of 6.3 km; this means that the density at height y is approximately proportional to exp(-y/6.3 km), and it goes down to 37% at 6.3 km, and to 17% at 11 km. Higher through the tropopause, density continues dropping exponentially, albeit faster ...
[7] [8] [2] This means that for specific amount of cumulative CO 2 emissions, a known global temperature change (within a range of uncertainty) can be expected, which indicates that holding global temperature change to below specific thresholds is a problem of limiting cumulative CO 2 emissions, leading to the idea of a carbon budget.
EU Regulation No 443/2009 set an average CO 2 emissions target for new passenger cars of 130 grams per kilometre. The target was gradually phased in between 2012 and 2015. A target of 95 grams per kilometre applies from 2021. For light commercial vehicle, an emissions target of 175 g/km applies from 2017, and 147 g/km from 2020, [67] a ...
Greenhouse gas emissions in 2019 were estimated at 57.4 GtCO 2 e, while CO 2 emissions alone made up 42.5 Gt including land-use change (LUC). [ 94 ] While mitigation measures for decarbonization are essential on the longer term, they could result in weak near-term warming because sources of carbon emissions often also co-emit air pollution .
The Climate Clock is a graphic to demonstrate how quickly the planet is approaching 1.5 °C of global warming, given current emissions trends. [1] It also shows the amount of CO 2 already emitted, and the global warming to date. PP Climate Clock was launched in 2015 to provide a measuring stick against which viewers can track climate change ...
Total CO 2 emissions per capita decreased from 8.7 t in 1990 to 7.8 t in 2007, that is to say a decrease by 10%. Almost 40% of the reduction in CO 2 intensity is due to increased use of energy carriers with lower emission factors. Total CO 2 emissions per unit of GDP, the “CO 2 intensity”, decreased more rapidly than energy intensity: by 2. ...
ChatGPT only produces 1.59 grams of CO2 per page view—compared with Rytr’s 10.1 and Spellbook’s 6.5. On the other hand, ChatGPT—which boasts more than 164 million monthly users—is ...
Carbon profiling [1] is a mathematical process that calculates how much carbon dioxide is put into the atmosphere per m 2 of space in a building over one year. The analysis has two parts that are added together to produce an overall figure that is termed the 'carbon profile': Operational carbon emissions [2] Embodied carbon emissions [2]