CO2 Has Almost No Effect on Global Temperature, Says Leading Climate Scientist

[ding]

It does NOT show the same thing. That 1997 GISP2 plot is complete shite, even as local data and you repeatedly claimed it was the best possible global data available.

It shows present day modern temperatures aren't hotter than earlier interglacial period temperatures. And it shows how ridiculous it is to establish a cooler temperature as the reference temperature. Clearly the planet is still within the NORMAL range of the present interglacial period with significantly more atmospheric CO2. And it's BELOW NORMAL for previous interglacial periods. Which is the same thing GISP2 shows.

 

[ding]

What do you think, Toro ? Does the Greenland ice core data show...

• Present day modern temperatures aren't hotter than earlier interglacial period temperatures
• How ridiculous it is to establish a cooler temperature as the reference temperature
• How the planet is still within the NORMAL range of the present interglacial period with significantly more atmospheric CO2

Pro Tip: Hover mouse over graphic

 

[jc456]

Where do you get all your figures? How old are you?

Dude thanks for confirming you made it up

 

[jc456]

Where do you get all your figures? How old are you?

I posted them. Look for the video I posted, 97% myth. Since you can’t use your smart phone, I suppose you have no idea how to use the search tool in here

 

[Crick]

From Chapter 5, The Physical Science Basis, Summary for Policymakers, Assessment Report 6, IPCC

Executive Summary
It is unequivocal that the increases in atmospheric carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) since the pre-industrial period are caused by human activities. The accumulation of GHGs in the atmosphere is determined by the balance between anthropogenic emissions, anthropogenic removals, and physical-biogeochemical source and sink dynamics on land and in the ocean. This chapter assesses how physical and biogeochemical processes of the carbon and nitrogen cycles affect the variability and trends of GHGs in the atmosphere as well as ocean acidification and deoxygenation. It identifies physical and biogeochemical feedbacks that have affected (or could affect) future rates of GHG accumulation in the atmosphere, and therefore, influence climate change and its impacts. This chapter also assesses the remaining carbon budget to limit global warming within various goals, as well as the large-scale consequences of carbon dioxide removal (CDR) and solar radiation modification (SRM) on biogeochemical cycles.

The Human Perturbation of the Carbon and Biogeochemical Cycles
Global mean concentrations for well-mixed GHGs (CO2, CH4 and N2O) in 2019 correspond to increases of about 47%, 156%, and 23%, respectively, above the levels in 1750 (representative of the pre-industrial era) (high confidence). Current atmospheric concentrations of the three GHGs are higher than at any point in the last 800,000 years, and in 2019 reached 409.9 parts per million (ppm) of CO2, 1866.3 parts per billion (ppb) of CH4, and 332.1 ppb of N2O (very high confidence). Current CO2 concentrations in the atmosphere are also unprecedented in the last 2 million years (high confidence). In the past 60 million years, there have been periods in Earth’s history when CO2 concentrations were significantly higher than at present, but multiple lines of evidence show that the rate at which CO2 has increased in the atmosphere during 1900–2019 is at least 10 times faster than at any other time during the last 800,000 years (high confidence), and 4–5 times faster than during the last 56 million years (low confidence).

Contemporary Trends of Greenhouse Gases
It is unequivocal that the increase of CO2, CH4, and N2O in the atmosphere over the industrial era is the result of human activities (very high confidence). This assessment is based on multiple lines of evidence including atmospheric gradients, isotopes, and inventory data. During the last measured decade, global average annual anthropogenic emissions of CO2, CH4, and N2O, reached the highest levels in human history at 10.9 ± 0.9 petagrams of carbon per year (PgC yr–1, 2010–2019), 335–383 teragrams of methane per year (TgCH4 yr–1, 2008–2017), and 4.2–11.4 teragrams of nitrogen per year (TgN yr–1, 2007–2016), respectively (high confidence).

The CO2 emitted from human activities during the decade of 2010–2019 (decadal average 10.9 ± 0.9 PgC yr–1) was distributed between three Earth system components: 46% accumulated in the atmosphere (5.1 ± 0.02 PgC yr–1), 23% was taken up by the ocean (2.5 ± 0.6 PgC yr–1) and 31% was stored by vegetation in terrestrial ecosystems (3.4 ± 0.9 PgC yr–1) (high confidence). Of the total anthropogenic CO2 emissions, the combustion of fossil fuels was responsible for 81–91%, with the remainder being the net CO2 flux from land-use change and land management (e.g., deforestation, degradation, regrowth after agricultural abandonment, and peat drainage).

Over the past six decades, the average fraction of anthropogenic CO2 emissions that has accumulated in the atmosphere (referred to as the airborne fraction) has remained nearly constant at approximately 44%. The ocean and land sinks of CO2 have continued to grow over the past six decades in response to increasing anthropogenic CO2 emissions (high confidence). Interannual and decadal variability of the regional and global ocean and land sinks indicate that these sinks are sensitive to climate conditions and therefore to climate change.

Recent observations show that ocean carbon processes are starting to change in response to the growing ocean sink, and these changes are expected to contribute significantly to future weakening of the ocean sink under medium- to highemissions scenarios. However, the effects of these changes are not yet reflected in a weakening trend of the contemporary (1960–2019) ocean sink (high confidence).

Atmospheric concentration of CH4 grew at an average rate of 7.6 ± 2.7 ppb yr–1 for the last decade (2010–2019), with a faster growth of 9.3 ± 2.4 ppb yr–1 over the last six years (2014–2019) (high confidence). The multi-decadal growth trend in atmospheric CH4 is dominated by anthropogenic activities (high confidence), and the growth since 2007 is largely driven by emissions from both fossil fuels and agriculture (dominated by livestock) (medium confidence). The interannual variability is dominated by El Niño–Southern Oscillation cycles, during which biomass burning and wetland emissions, as well as loss by reaction with tropospheric hydroxyl radical (OH) play an important role.

Atmospheric concentration of N2O grew at an average rate of 0.85 ± 0.03 ppb yr–1 between 1995 and 2019, with a further increase to 0.95 ± 0.04 ppb yr–1 in the most recent decade (2010–2019). This increase is dominated by anthropogenic emissions, which have increased by 30% between the 1980s and the most recent observational decade (2007–2016) (high confidence). Increased use of nitrogen fertilizer and manure contributed to about two-thirds of the increase during the 1980–2016 period, with the fossil fuels/industry, biomass burning, and wastewater accounting for much of the rest (high confidence).

Drafting Authors:
Richard P. Allan (United Kingdom), Paola A. Arias (Colombia), Sophie Berger (France/Belgium), Josep G. Canadell (Australia), Christophe Cassou (France), Deliang Chen (Sweden), Annalisa Cherchi (Italy), Sarah L. Connors (France/United Kingdom), Erika Coppola (Italy), Faye Abigail Cruz (Philippines), Aïda Diongue-Niang (Senegal), Francisco J. Doblas-Reyes (Spain), Hervé Douville (France), Fatima Driouech (Morocco), Tamsin L. Edwards (United Kingdom), François Engelbrecht (South Africa), Veronika Eyring (Germany), Erich Fischer (Switzerland), Gregory M. Flato (Canada), Piers Forster (United Kingdom), Baylor Fox- Kemper (United States of America), Jan S. Fuglestvedt (Norway), John C. Fyfe (Canada), Nathan P. Gillett (Canada), Melissa I. Gomis (France/Switzerland), Sergey K. Gulev (Russian Federation), José Manuel Gutiérrez (Spain), Rafiq Hamdi (Belgium), Jordan Harold (United Kingdom), Mathias Hauser (Switzerland), Ed Hawkins (United Kingdom), Helene T. Hewitt (United Kingdom), Tom Gabriel Johansen (Norway), Christopher Jones (United Kingdom), Richard G. Jones (United Kingdom), Darrell S. Kaufman (United States of America), Zbigniew Klimont (Austria/Poland), Robert E. Kopp (United States of America), Charles Koven (United States of America), Gerhard Krinner (France/Germany, France), June-Yi Lee (Republic of Korea), Irene Lorenzoni (United Kingdom/Italy), Jochem Marotzke (Germany), Valérie Masson-Delmotte (France), Thomas K. Maycock (United States of America), Malte Meinshausen (Australia/Germany), Pedro M.S. Monteiro (South Africa), Angela Morelli (Norway/Italy), Vaishali Naik (United States of America), Dirk Notz (Germany), Friederike Otto (United Kingdom/Germany), Matthew D. Palmer (United Kingdom), Izidine Pinto (South Africa/Mozambique), Anna Pirani (Italy), Gian-Kasper Plattner (Switzerland), Krishnan Raghavan (India), Roshanka Ranasinghe (The Netherlands/Sri Lanka, Australia), Joeri Rogelj (United Kingdom/Belgium), Maisa Rojas (Chile), Alex C. Ruane (United States of America), Jean-Baptiste Sallée (France), Bjørn H. Samset (Norway), Sonia I. Seneviratne (Switzerland), Jana Sillmann (Norway/ Germany), Anna A. Sörensson (Argentina), Tannecia S. Stephenson (Jamaica), Trude Storelvmo (Norway), Sophie Szopa (France), Peter W. Thorne (Ireland/United Kingdom), Blair Trewin (Australia), Robert Vautard (France), Carolina Vera (Argentina), Noureddine Yassaa (Algeria), Sönke Zaehle (Germany), Panmao Zhai (China), Xuebin Zhang (Canada), Kirsten Zickfeld (Canada/Germany)
Contributing Authors:
Krishna M. AchutaRao (India), Bhupesh Adhikary (Nepal), Edvin Aldrian (Indonesia), Kyle Armour (United States of America), Govindasamy Bala (India/United States of America), Rondrotiana Barimalala (South Africa/Madagascar), Nicolas Bellouin (United Kingdom/France), William Collins (United Kingdom), William D. Collins (United States of America), Susanna Corti (Italy), Peter M. Cox (United Kingdom), Frank J. Dentener (EU/The Netherlands), Claudine Dereczynski (Brazil), Alejandro Di Luca (Australia, Canada/Argentina), Alessandro Dosio (Italy), Leah Goldfarb (France/United States of America), Irina V. Gorodetskaya (Portugal/Belgium, Russian Federation), Pandora Hope (Australia), Mark Howden (Australia), A.K.M Saiful Islam (Bangladesh), Yu Kosaka (Japan), James Kossin (United States of America), Svitlana Krakovska (Ukraine), Chao Li (China), Jian Li (China), Thorsten Mauritsen (Germany/Denmark), Sebastian Milinski (Germany), Seung-Ki Min (Republic of Korea), Thanh Ngo Duc (Vietnam), Andy Reisinger (New Zealand), Lucas Ruiz (Argentina), Shubha Sathyendranath (United Kingdom/Canada, Overseas Citizen of India), Aimée B. A. Slangen (The Netherlands), Chris Smith (United Kingdom), Izuru Takayabu (Japan), Muhammad Irfan Tariq (Pakistan), Anne-Marie Treguier (France), Bart van den Hurk (The Netherlands), Karina von Schuckmann (France/Germany), Cunde Xiao (China)

 

[jc456]

From Chapter 5, The Physical Science Basis, Summary for Policymakers, Assessment Report 6, IPCC

Executive Summary
It is unequivocal that the increases in atmospheric carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) since the pre-industrial period are caused by human activities. The accumulation of GHGs in the atmosphere is determined by the balance between anthropogenic emissions, anthropogenic removals, and physical-biogeochemical source and sink dynamics on land and in the ocean. This chapter assesses how physical and biogeochemical processes of the carbon and nitrogen cycles affect the variability and trends of GHGs in the atmosphere as well as ocean acidification and deoxygenation. It identifies physical and biogeochemical feedbacks that have affected (or could affect) future rates of GHG accumulation in the atmosphere, and therefore, influence climate change and its impacts. This chapter also assesses the remaining carbon budget to limit global warming within various goals, as well as the large-scale consequences of carbon dioxide removal (CDR) and solar radiation modification (SRM) on biogeochemical cycles.

The Human Perturbation of the Carbon and Biogeochemical Cycles
Global mean concentrations for well-mixed GHGs (CO2, CH4 and N2O) in 2019 correspond to increases of about 47%, 156%, and 23%, respectively, above the levels in 1750 (representative of the pre-industrial era) (high confidence). Current atmospheric concentrations of the three GHGs are higher than at any point in the last 800,000 years, and in 2019 reached 409.9 parts per million (ppm) of CO2, 1866.3 parts per billion (ppb) of CH4, and 332.1 ppb of N2O (very high confidence). Current CO2 concentrations in the atmosphere are also unprecedented in the last 2 million years (high confidence). In the past 60 million years, there have been periods in Earth’s history when CO2 concentrations were significantly higher than at present, but multiple lines of evidence show that the rate at which CO2 has increased in the atmosphere during 1900–2019 is at least 10 times faster than at any other time during the last 800,000 years (high confidence), and 4–5 times faster than during the last 56 million years (low confidence).

Contemporary Trends of Greenhouse Gases
It is unequivocal that the increase of CO2, CH4, and N2O in the atmosphere over the industrial era is the result of human activities (very high confidence). This assessment is based on multiple lines of evidence including atmospheric gradients, isotopes, and inventory data. During the last measured decade, global average annual anthropogenic emissions of CO2, CH4, and N2O, reached the highest levels in human history at 10.9 ± 0.9 petagrams of carbon per year (PgC yr–1, 2010–2019), 335–383 teragrams of methane per year (TgCH4 yr–1, 2008–2017), and 4.2–11.4 teragrams of nitrogen per year (TgN yr–1, 2007–2016), respectively (high confidence).

The CO2 emitted from human activities during the decade of 2010–2019 (decadal average 10.9 ± 0.9 PgC yr–1) was distributed between three Earth system components: 46% accumulated in the atmosphere (5.1 ± 0.02 PgC yr–1), 23% was taken up by the ocean (2.5 ± 0.6 PgC yr–1) and 31% was stored by vegetation in terrestrial ecosystems (3.4 ± 0.9 PgC yr–1) (high confidence). Of the total anthropogenic CO2 emissions, the combustion of fossil fuels was responsible for 81–91%, with the remainder being the net CO2 flux from land-use change and land management (e.g., deforestation, degradation, regrowth after agricultural abandonment, and peat drainage).

Over the past six decades, the average fraction of anthropogenic CO2 emissions that has accumulated in the atmosphere (referred to as the airborne fraction) has remained nearly constant at approximately 44%. The ocean and land sinks of CO2 have continued to grow over the past six decades in response to increasing anthropogenic CO2 emissions (high confidence). Interannual and decadal variability of the regional and global ocean and land sinks indicate that these sinks are sensitive to climate conditions and therefore to climate change.

Recent observations show that ocean carbon processes are starting to change in response to the growing ocean sink, and these changes are expected to contribute significantly to future weakening of the ocean sink under medium- to highemissions scenarios. However, the effects of these changes are not yet reflected in a weakening trend of the contemporary (1960–2019) ocean sink (high confidence).

Atmospheric concentration of CH4 grew at an average rate of 7.6 ± 2.7 ppb yr–1 for the last decade (2010–2019), with a faster growth of 9.3 ± 2.4 ppb yr–1 over the last six years (2014–2019) (high confidence). The multi-decadal growth trend in atmospheric CH4 is dominated by anthropogenic activities (high confidence), and the growth since 2007 is largely driven by emissions from both fossil fuels and agriculture (dominated by livestock) (medium confidence). The interannual variability is dominated by El Niño–Southern Oscillation cycles, during which biomass burning and wetland emissions, as well as loss by reaction with tropospheric hydroxyl radical (OH) play an important role.

Atmospheric concentration of N2O grew at an average rate of 0.85 ± 0.03 ppb yr–1 between 1995 and 2019, with a further increase to 0.95 ± 0.04 ppb yr–1 in the most recent decade (2010–2019). This increase is dominated by anthropogenic emissions, which have increased by 30% between the 1980s and the most recent observational decade (2007–2016) (high confidence). Increased use of nitrogen fertilizer and manure contributed to about two-thirds of the increase during the 1980–2016 period, with the fossil fuels/industry, biomass burning, and wastewater accounting for much of the rest (high confidence).

Drafting Authors:
Richard P. Allan (United Kingdom), Paola A. Arias (Colombia), Sophie Berger (France/Belgium), Josep G. Canadell (Australia), Christophe Cassou (France), Deliang Chen (Sweden), Annalisa Cherchi (Italy), Sarah L. Connors (France/United Kingdom), Erika Coppola (Italy), Faye Abigail Cruz (Philippines), Aïda Diongue-Niang (Senegal), Francisco J. Doblas-Reyes (Spain), Hervé Douville (France), Fatima Driouech (Morocco), Tamsin L. Edwards (United Kingdom), François Engelbrecht (South Africa), Veronika Eyring (Germany), Erich Fischer (Switzerland), Gregory M. Flato (Canada), Piers Forster (United Kingdom), Baylor Fox- Kemper (United States of America), Jan S. Fuglestvedt (Norway), John C. Fyfe (Canada), Nathan P. Gillett (Canada), Melissa I. Gomis (France/Switzerland), Sergey K. Gulev (Russian Federation), José Manuel Gutiérrez (Spain), Rafiq Hamdi (Belgium), Jordan Harold (United Kingdom), Mathias Hauser (Switzerland), Ed Hawkins (United Kingdom), Helene T. Hewitt (United Kingdom), Tom Gabriel Johansen (Norway), Christopher Jones (United Kingdom), Richard G. Jones (United Kingdom), Darrell S. Kaufman (United States of America), Zbigniew Klimont (Austria/Poland), Robert E. Kopp (United States of America), Charles Koven (United States of America), Gerhard Krinner (France/Germany, France), June-Yi Lee (Republic of Korea), Irene Lorenzoni (United Kingdom/Italy), Jochem Marotzke (Germany), Valérie Masson-Delmotte (France), Thomas K. Maycock (United States of America), Malte Meinshausen (Australia/Germany), Pedro M.S. Monteiro (South Africa), Angela Morelli (Norway/Italy), Vaishali Naik (United States of America), Dirk Notz (Germany), Friederike Otto (United Kingdom/Germany), Matthew D. Palmer (United Kingdom), Izidine Pinto (South Africa/Mozambique), Anna Pirani (Italy), Gian-Kasper Plattner (Switzerland), Krishnan Raghavan (India), Roshanka Ranasinghe (The Netherlands/Sri Lanka, Australia), Joeri Rogelj (United Kingdom/Belgium), Maisa Rojas (Chile), Alex C. Ruane (United States of America), Jean-Baptiste Sallée (France), Bjørn H. Samset (Norway), Sonia I. Seneviratne (Switzerland), Jana Sillmann (Norway/ Germany), Anna A. Sörensson (Argentina), Tannecia S. Stephenson (Jamaica), Trude Storelvmo (Norway), Sophie Szopa (France), Peter W. Thorne (Ireland/United Kingdom), Blair Trewin (Australia), Robert Vautard (France), Carolina Vera (Argentina), Noureddine Yassaa (Algeria), Sönke Zaehle (Germany), Panmao Zhai (China), Xuebin Zhang (Canada), Kirsten Zickfeld (Canada/Germany)
Contributing Authors:
Krishna M. AchutaRao (India), Bhupesh Adhikary (Nepal), Edvin Aldrian (Indonesia), Kyle Armour (United States of America), Govindasamy Bala (India/United States of America), Rondrotiana Barimalala (South Africa/Madagascar), Nicolas Bellouin (United Kingdom/France), William Collins (United Kingdom), William D. Collins (United States of America), Susanna Corti (Italy), Peter M. Cox (United Kingdom), Frank J. Dentener (EU/The Netherlands), Claudine Dereczynski (Brazil), Alejandro Di Luca (Australia, Canada/Argentina), Alessandro Dosio (Italy), Leah Goldfarb (France/United States of America), Irina V. Gorodetskaya (Portugal/Belgium, Russian Federation), Pandora Hope (Australia), Mark Howden (Australia), A.K.M Saiful Islam (Bangladesh), Yu Kosaka (Japan), James Kossin (United States of America), Svitlana Krakovska (Ukraine), Chao Li (China), Jian Li (China), Thorsten Mauritsen (Germany/Denmark), Sebastian Milinski (Germany), Seung-Ki Min (Republic of Korea), Thanh Ngo Duc (Vietnam), Andy Reisinger (New Zealand), Lucas Ruiz (Argentina), Shubha Sathyendranath (United Kingdom/Canada, Overseas Citizen of India), Aimée B. A. Slangen (The Netherlands), Chris Smith (United Kingdom), Izuru Takayabu (Japan), Muhammad Irfan Tariq (Pakistan), Anne-Marie Treguier (France), Bart van den Hurk (The Netherlands), Karina von Schuckmann (France/Germany), Cunde Xiao (China)

Same old bullshit report! Give us a scientist

 

[Billo_Really]

I posted them. Look for the video I posted, 97% myth. Since you can’t use your smart phone, I suppose you have no idea how to use the search tool in here

I'm sure you have your evidence.

 

[jc456]

Nope, I didn't.

Then post your link!

 

[Crick]

Figure SPM.2, The Physical Science Basis, Summary for Policy Makers, pg 7.

 

[jc456]

View attachment 752076
Figure SPM.2, The Physical Science Basis, Summary for Policy Makers, pg 7.

Still doesn’t explain what it is happening towards catastrophic issues?

 

[Crick]

Still doesn’t explain what it is happening towards catastrophic issues?

Your problems are your problems

 

[jc456]

Your problems are your problems

It seems you have a problem providing data there’s a catastrophe

 

[ding]

View attachment 752076
Figure SPM.2, The Physical Science Basis, Summary for Policy Makers, pg 7.

1 degree warmer than 1850 (cold spell) and still cooler than temperatures ~10,000 years ago (warmest temperature of Holocene) with 120 ppm more CO2 than then. It's just empirical climate data.

 

[Crick]

It seems you have a problem providing data there’s a catastrophe

Your problems are your problems

 

[Crick]

Figure SPM.4, The Physical Science Basis, Summary for Policy Makers, pg 13

 

[ding]

View attachment 752091

View attachment 752093

Figure SPM.4, The Physical Science Basis, Summary for Policy Makers, pg 13

1 degree warmer than 1850 (cold spell) and still cooler than temperatures ~10,000 years ago (warmest temperature of Holocene) with 120 ppm more CO2 today than then. It's just empirical climate data.

 

[Crick]

Global temperature modes shed light on the Holocene temperature conundrum - Nature Communications

Proxy reconstructions show a decreasing trend from the Middle to Late Holocene, which conflicts with model results showing an increasing trend. Statistical analysis of model output shows that these conflicting results originate from two distinct modes of variability, which dominate at different...

www.nature.com

RealClimate: Paleoclimate: The End of the Holocene

RealClimate: Recently a group of researchers from Harvard and Oregon State University has published the first global temperature reconstruction for the last 11,000 years – that’s the whole Holocene (Marcott et al. 2013). The results are striking and worthy of further discussion, after the...

www.realclimate.org

Revised Holocene temperature record affirms role of greenhouse gases in recent millennia

Scientists have resolved a key climate change mystery, showing that the annual global temperature today is the warmest of the past 10,000 years—contrary to recent research, according to a Rutgers-led study in the journal Nature.

phys.org

File:Holocene Temperature Variations.png - Wikimedia Commons

commons.wikimedia.org

Holocene global mean surface temperature, a multi-method reconstruction approach - Scientific Data

An extensive new multi-proxy database of paleo-temperature time series (Temperature 12k) enables a more robust analysis of global mean surface temperature (GMST) and associated uncertainties than was previously available. We applied five different statistical methods to reconstruct the GMST of...

www.nature.com

The two epochs of Marcott and the Wheelchair

This is a re-post from OurChangingClimate

skepticalscience.com

 

[Crick]

The Physical Science Basis (IPCC AR6, WGI), Chapter 7, pg 959

The Physical Science Basis (IPCC AR6, WGI), Chapter 7, pg 961

The Physical Science Basis (IPCC AR6, WGI), Chapter 7, pg 962

 

[jc456]

Your problems are your problems

again, I don't have any problem. I don't believe a catastrophe awaits me. Yet you keep whining on here about it. conclusion, your problem.

 

[jc456]

View attachment 752169
The Physical Science Basis (IPCC AR6, WGI), Chapter 7, pg 959

View attachment 752170
The Physical Science Basis (IPCC AR6, WGI), Chapter 7, pg 961

View attachment 752172
The Physical Science Basis (IPCC AR6, WGI), Chapter 7, pg 962

what's your summary report?