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An article came out calling into question the validity of RCP since projections are based on estimates of coal growth in China prior to the economic crash of 2008. Estimates may not be accurate with new measurements. Scientific American
I have removed the "orphan" tag on the grounds that this article is not yet ready to have any other article link to it. When (if?) there is some actual substance to point to then links can be added. ~ J. Johnson (JJ) ( talk) 21:31, 25 January 2012 (UTC)
Why is the article's name plural? Each pathway in the list of four is singular. Vaughan Pratt ( talk) 19:02, 19 June 2015 (UTC)
Graph key should have RCP 2.6 not RCP 2.5 Galerita ( talk) 05:33, 1 August 2019 (UTC)
I think it would be helpful to readers if some expert here could add information about the 1750 baseline. In other words, a change of 8.5Wm-2 is more meaningful if compared to a starting power density. (I _think_ the baseline might be zero forcing balance i.e. the solar constant multiplied by albedo (~0.7) and divided by four (pi r^2/(4 pi r^2)) for the area ratio so 238Wm^-2 but I'm not sure and I'm not WP:bold enough to guess.) Readers could then see that 8.5 Wm-2 is (say) a 3.5% deviation (8.5/238) from the neutral point. Thanks! Talk to SageGreenRider 13:38, 20 December 2019 (UTC)
I don't get the idea behind the sentence from the RCP8.5 paragraph: "RCP8.5 remains useful for its aptness in both tracking historical total cumulative CO2 emissions". Scenarios are possible sequences of events, which are used to analyse in a what-if-style future decision making. For tracking historical data you don't need scenarios but a good statistician. Does this claim make sense in this context? -- Gunnar ( talk) 07:06, 10 October 2021 (UTC)
I propose to add some corrections to this section to improve its rigor and neutrality.
The second sentence states that "Since AR5 this has been thought to be very unlikely, but still possible as feedbacks are not well understood.[21][22]".
I would propose to reformulate this section in this way:
In RCP 8.5 emissions continue to rise throughout the 21st century.[13] RCP8.5 is generally taken as the basis for worst-case climate change scenarios. Since AR5 the likelihood of this RCP has been debated, due to overestimation of projected coal outputs[21][22]. On another side, many uncertainties remain on carbon cycle feedbacks, which could lead to warmer temperatures than projected in RCP [4]. RCP 8.5 is still used for predicting mid-century (and earlier) emissions based on current and stated policies.[23]
Alexandre Coche ( talk) 15:55, 16 June 2022 (UTC)
This article is rated C-class on Wikipedia's
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A graph should have been displayed here but
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An article came out calling into question the validity of RCP since projections are based on estimates of coal growth in China prior to the economic crash of 2008. Estimates may not be accurate with new measurements. Scientific American
I have removed the "orphan" tag on the grounds that this article is not yet ready to have any other article link to it. When (if?) there is some actual substance to point to then links can be added. ~ J. Johnson (JJ) ( talk) 21:31, 25 January 2012 (UTC)
Why is the article's name plural? Each pathway in the list of four is singular. Vaughan Pratt ( talk) 19:02, 19 June 2015 (UTC)
Graph key should have RCP 2.6 not RCP 2.5 Galerita ( talk) 05:33, 1 August 2019 (UTC)
I think it would be helpful to readers if some expert here could add information about the 1750 baseline. In other words, a change of 8.5Wm-2 is more meaningful if compared to a starting power density. (I _think_ the baseline might be zero forcing balance i.e. the solar constant multiplied by albedo (~0.7) and divided by four (pi r^2/(4 pi r^2)) for the area ratio so 238Wm^-2 but I'm not sure and I'm not WP:bold enough to guess.) Readers could then see that 8.5 Wm-2 is (say) a 3.5% deviation (8.5/238) from the neutral point. Thanks! Talk to SageGreenRider 13:38, 20 December 2019 (UTC)
I don't get the idea behind the sentence from the RCP8.5 paragraph: "RCP8.5 remains useful for its aptness in both tracking historical total cumulative CO2 emissions". Scenarios are possible sequences of events, which are used to analyse in a what-if-style future decision making. For tracking historical data you don't need scenarios but a good statistician. Does this claim make sense in this context? -- Gunnar ( talk) 07:06, 10 October 2021 (UTC)
I propose to add some corrections to this section to improve its rigor and neutrality.
The second sentence states that "Since AR5 this has been thought to be very unlikely, but still possible as feedbacks are not well understood.[21][22]".
I would propose to reformulate this section in this way:
In RCP 8.5 emissions continue to rise throughout the 21st century.[13] RCP8.5 is generally taken as the basis for worst-case climate change scenarios. Since AR5 the likelihood of this RCP has been debated, due to overestimation of projected coal outputs[21][22]. On another side, many uncertainties remain on carbon cycle feedbacks, which could lead to warmer temperatures than projected in RCP [4]. RCP 8.5 is still used for predicting mid-century (and earlier) emissions based on current and stated policies.[23]
Alexandre Coche ( talk) 15:55, 16 June 2022 (UTC)