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Rhiannon12866

(223,707 posts)
Thu Nov 16, 2023, 09:39 PM Nov 2023

Climate Change Report Claims Temps High Enough To Kill Most Of Humanity ALREADY? w/ Michael Mann - Thom Hartmann



A shocking new report “stating” that climate change would already kill most of humanity if not for an unlikely ally, is leaving us with a lot of questions. Are aerosols really slowing down man-made climate change? Can we still stop the climate from becoming even more deadly? We ask renowned climate scientist Dr. Michael Mann. - Aired on 11/16/2023.
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Climate Change Report Claims Temps High Enough To Kill Most Of Humanity ALREADY? w/ Michael Mann - Thom Hartmann (Original Post) Rhiannon12866 Nov 2023 OP
K&R Think. Again. Nov 2023 #1
Um... Dr. Mann... OKIsItJustMe Nov 2023 #2
Your graph is consistent with Mann's comments. NCIndie Nov 2023 #4
It's not my graph, it's from Hansen et al. OKIsItJustMe Nov 2023 #5
James Hansen Webinar: An Intimate Conversation with Leading Climate Scientists To Discuss New Research on Global Warming OKIsItJustMe Nov 2023 #3

OKIsItJustMe

(21,016 posts)
2. Um... Dr. Mann...
Thu Nov 16, 2023, 10:00 PM
Nov 2023

How do you explain the recent apparent acceleration of Global Warming?



Hartmann’s title is misleading as well, and the opening graphic is a mockery. Either someone does not understand what is meant by “aerosols” or they’re being intentionally deceptive, or their humor is in exceedingly bad taste.

NCIndie

(556 posts)
4. Your graph is consistent with Mann's comments.
Thu Nov 16, 2023, 10:38 PM
Nov 2023

Hansen said that the presence of aerosols may have slowed by a total of 0.5 degrees F but some/most/all of this is balanced by other coal-based emissions. So, the increasing temperatures agree with him.

I have no idea what Hartmann's title is supposed to mean, but it is poorly worded.

OKIsItJustMe

(21,016 posts)
5. It's not my graph, it's from Hansen et al.
Thu Nov 16, 2023, 11:52 PM
Nov 2023

Mann emphasizes the “cooling from the disappearance of ‘black carbon.’” He does not compare the magnitudes.

He says, (Starting at 3:01) “The Net effect is that all of those other things, at least the 1st order pretty much cancel, and what we’re left with is the warming from the carbon dioxide pollution.”

Unless the rate of emissions has dramatically increased recently, his statements are either accidentally, or intentionally misleading.

Global warming in the pipeline says (in part):

The data indicate that EEI has doubled since the first decade of this century (Fig. 25). This increase is one basis for our prediction of post-2010 acceleration of the global warming rate. The EEI increase may be partly due to restrictions on maritime aerosol precursor emissions imposed in 2015 and 2020 (The great inadvertent aerosol experiment section), but the growth rate of GHG climate forcing also increased in 2015 and since has remained at the higher level (Equilibrium warming versus committed warming section).

Reduction of climate forcing needed to reduce EEI to zero is greater than EEI because of ultrafast cloud feedback (Slow, fast and ultrafast feedbacks section), but the magnitude of this effect is uncertain (SM6). Cloud feedbacks are only beginning to be simulated well, but climate sensitivity near 1.2°C per W/m² implies that the net cloud feedback is large and deserves greater attention. Precise monitoring of EEI is essential as a sentinel for future climate change and to assess efforts to stabilize climate and avoid undesirable consequences. Global satellite monitoring of geographical and temporal changes of EEI and ocean in situ monitoring (especially in polar regions of rapid change) are both needed for the sake of understanding ongoing climate change.

EEI - “Earth’s Energy Imbalance”

OKIsItJustMe

(21,016 posts)
3. James Hansen Webinar: An Intimate Conversation with Leading Climate Scientists To Discuss New Research on Global Warming
Thu Nov 16, 2023, 10:11 PM
Nov 2023
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