Mann is up to his typical con job again

[Robertinfremont]

Mann came up with the bozo idea man has changed the ocean currents temperatures

Multidecadal climate oscillations during the past millennium driven by volcanic forcing | Science

Dr Judith Curry and other Climate experts call him on this.

Canceling the AMO - Climate Etc.

by Judith Curry Conclusion from Michael Mann’s new paper: “We conclude that there is no compelling evidence for internal multidecadal oscillations in the climate system.” Michael Mann’s most recent paper: Multidecadal climate oscilliations during the past millennium driven by volcanic …...

judithcurry.com

Read her full remarks and graphs, etc and this is the first part of her summary rebuttal.

With that context, you can see why I am not accepting the aerosol explanation (pollution and/or volcanoes) for an explanation of what causes the AMO. There is substantial discussion and disagreement in the climate dynamics community on this topic, which isn’t surprising given the apparent complex interactions between ocean circulations and the AMOC, weather and interannual climate variability, and external forcing from the sun and volcanoes.

So, what exactly is wrong with Mann’s analysis? He relies on global climate models, which are inadequate in simulating the AMO. This was most recently emphasized by Kravtsov et al. (2018), who concluded that:

“While climate models exhibit various levels of decadal climate variability and some regional similarities to observations, none of the model simulations considered match the observed signal in terms of its magnitude, spatial patterns and their sequential time development. These results highlight a substantial degree of uncertainty in our interpretation of the observed climate change using current generation of climate models.”

 

[Peter]

So, we have one scientist with a theory against thousands of scientists with decades of data and thousands of studies and you're going with the single scientist?
If this study gets traction and more scientists start to agree with this assessment then fine but until then I see no reason to stop thinking human activity is causing climate change and sea level rise.

 

[Robertinfremont]

So, we have one scientist with a theory against thousands of scientists with decades of data and thousands of studies and you're going with the single scientist?
If this study gets traction and more scientists start to agree with this assessment then fine but until then I see no reason to stop thinking human activity is causing climate change and sea level rise.

You spotted Manns errors too?

 

[Peter]

Nope, I'm saying far to many conservatives find studies they think sides with them and decide that that somehow trumps everything else.

Climate change has been studied for decades all over the world and the vast consencus is that man is the cause.

 

[Mr Person]

You spotted Manns errors too?

You didn't spot anything. You were yet again duped by random bull you found on the internet.

 

[Robertinfremont]

You didn't spot anything. You were yet again duped by random bull you found on the internet.

Manns was the trash on the internet you speak of. I get my expert reports by e mail.

 

[Robertinfremont]

Nope, I'm saying far to many conservatives find studies they think sides with them and decide that that somehow trumps everything else.

Climate change has been studied for decades all over the world and the vast consencus is that man is the cause.

What is a Left winger to do when they get proven wrong as is Michael Mann.?

 

[Lord of Planar]

Mann came up with the bozo idea man has changed the ocean currents temperatures

Multidecadal climate oscillations during the past millennium driven by volcanic forcing | Science

Dr Judith Curry and other Climate experts call him on this.

Canceling the AMO - Climate Etc.

by Judith Curry Conclusion from Michael Mann’s new paper: “We conclude that there is no compelling evidence for internal multidecadal oscillations in the climate system.” Michael Mann’s most recent paper: Multidecadal climate oscilliations during the past millennium driven by volcanic …...

judithcurry.com

Read her full remarks and graphs, etc and this is the first part of her summary rebuttal.

With that context, you can see why I am not accepting the aerosol explanation (pollution and/or volcanoes) for an explanation of what causes the AMO. There is substantial discussion and disagreement in the climate dynamics community on this topic, which isn’t surprising given the apparent complex interactions between ocean circulations and the AMOC, weather and interannual climate variability, and external forcing from the sun and volcanoes.

So, what exactly is wrong with Mann’s analysis? He relies on global climate models, which are inadequate in simulating the AMO. This was most recently emphasized by Kravtsov et al. (2018), who concluded that:

“While climate models exhibit various levels of decadal climate variability and some regional similarities to observations, none of the model simulations considered match the observed signal in terms of its magnitude, spatial patterns and their sequential time development. These results highlight a substantial degree of uncertainty in our interpretation of the observed climate change using current generation of climate models.”

You don't expect any honesty from the man who support mann made global warming do you?