Pages

Jump to bottom

5 comments

1 Norman Branitsky  Sun, Jul 4, 2010 7:46:35pm

Seems to be a nicely laid out paper. I have two comments:
1. B4 "Climate change is driven by cosmic rays"
Claims of a CRF-climate link on the million year time scale (Shaviv and Veizer 2003)
have been disputed (Rahmstorf et al. 2004).

Here is Shaviv's response on his web site to the Rahmstorf et al.2004 paper:
"Rahmstorf et al. 2004 published a comment stating that almost all Veizer and I did was wrong. We showed in our response why every comment is irrelevant or invalid. In their response to the rebuttal, Rahmstorf et al. did not address any of our rebuttal comments (I presume because they could not). Instead, they used faulty statistics to demonstrate that our results are statistically insignificant. (Basically, they used Bartlett's formula for the effective number of degrees of freedom in a limit where the original derivation breaks down)."

Just because someone has written a paper with lots of citations, you still have to be diligent as a reader because not all the citations may be valid.

2. C6 "CO2 does not drive climate" is missing from this paper.
(The -=- was the only way I could make a reasonable table as more than 3 characters like "." or "-" are collapsed to just 3 characters.)

Time-=-=-=-=-Glaciation-=-=-=-=-=-=-CO2 (ppmv)
450-420 Ma-=-Ordovician-Silurian-=-=-4000(*)
360-260 Ma-=-Carboniferous-Permian-=400
151-132 Ma-=-Jurassic-Cretaceous-=-=2000(*)
Present Day-=-=-=-=-=-=-=-=-=-=-=-=-389

(*) Berner, R. A. and Kothavala, Z. 2001: Geocarb III: A revised model of atmospheric CO2 over Phanerozoic time.
American Journal of Science 301:182-204

The obvious question the Urs Neu paper neglects to answer is how the Earth could be covered in glaciers if the atmospheric CO2 was 5 or 10 times the present day value? Why wasn't the Earth's climate a runaway greenhouse with so much atmospheric CO2?

2 freetoken  Sun, Jul 4, 2010 7:50:16pm

re: #1 dinky

The obvious question the Urs Neu paper neglects to answer is how the Earth could be covered in glaciers if the atmospheric CO2 was 5 or 10 times the present day value? Why wasn't the Earth's climate a runaway greenhouse with so much atmospheric CO2?


These sort of questions get asked, and answered, all the time.

BTW, of what period are you thinking when you say "10 times the present day value"?

3 Norman Branitsky  Sun, Jul 4, 2010 8:31:38pm

re: #2 freetoken

These sort of questions get asked, and answered, all the time.


I'm just asking. Have any links you can direct me to that answers this specific question?

BTW, of what period are you thinking when you say "10 times the present day value"?


Ordovician-Silurian Glaciation (450-420 Ma) as listed in my table.

4 b_sharp  Sun, Jul 4, 2010 8:47:50pm

re: #1 dinky


The obvious question the Urs Neu paper neglects to answer is how the Earth could be covered in glaciers if the atmospheric CO2 was 5 or 10 times the present day value? Why wasn't the Earth's climate a runaway greenhouse with so much atmospheric CO2?

Although it isn't possible to know for sure, there have been several explanations given.

Simply put, during that time period, solar output was less than it is now, CO2 estimates for the time were high, the cooling preceded the CO2, and the increase in CO2 pulled the Earth out of the cooling period.

John Cook at Skeptical Science has a good write up on it including cites to specific papers.

5 b_sharp  Sun, Jul 4, 2010 8:58:29pm

Here is another paper disputing the work of Shaviv et al.

Again John Cook has an article on the Cosmic question including Shaviv's rebuttal to that paper and Sloan's response to the rebuttal.


This page has been archived.
Comments are closed.

Jump to top

Create a Page

This is the LGF Pages posting bookmarklet. To use it, drag this button to your browser's bookmark bar, and title it 'LGF Pages' (or whatever you like). Then browse to a site you want to post, select some text on the page to use for a quote, click the bookmarklet, and the Pages posting window will appear with the title, text, and any embedded video or audio files already filled in, ready to go.

Or... you can just click this button to open the Pages posting window right away.

Last updated: 2016-01-01 10:29 am PST

LGF User's Guide RSS Feeds

Help support Little Green Footballs!

Subscribe now for ad-free access!

Recent Pages
Thanos
Marvel’s Captain America: Civil War - Big Game Spot
Choose your side with the latest preview for Marvel's "Captain America: Civil War," in theaters May 6! ► Subscribe to Marvel: bit.ly Watch more from Marvel's Captain America: Civil War now: bit.ly Follow Marvel on Twitter: ‪twitter.comLike Marvel on ...

1 day, 1 hour ago
Views: 237 • Comments: 3 • Rating: 0
Tweets: 1 • Share to Facebook

Shares: 0
Likes: 0
Comments: 0
: 0
Thanos
DNA Study of First Ancient African Genome Flawed, Researchers Report
True science is often about finding errors, mistakes, and bad data and correcting it. As it turns out, the data produced by the program used to map Mota’s DNA came in a format that had to be tweaked before the ...

1 day, 2 hours ago
Views: 375 • Comments: 0 • Rating: 1
Tweets: 38 • Share to Facebook

Shares: 0
Likes: 0
Comments: 0
: 0
Thanos
The NFL Wants You to Think These Things Are Illegal
The voiceover in the clip says: "This telecast is copyrighted by the NFL for the private use of our audience. Any other use of this telecast or any pictures, descriptions, or accounts of the game without the NFL's consent ...

1 day, 2 hours ago
Views: 501 • Comments: 2 • Rating: 1
Tweets: 93 • Share to Facebook

Shares: 0
Likes: 0
Comments: 0
: 0
Thanos
Future Islands - the Chase
Filmed live at The Music Farm in Charleston, SC on April 14, 2015 by Allen Alcantara on a GoPro Hero4. US Tour Crew:Live Sound: Dan FromeLighting Designer: Phil WeinholtTour Manager: Allen AlcantaraKing of Shirts: Dan GaetaLive drums: Michael Lowry ...

2 days, 3 hours ago
Views: 278 • Comments: 0 • Rating: 0
Tweets: 1 • Share to Facebook

Shares: 0
Likes: 0
Comments: 0
: 0
Thanos
Kimbra - ‘Goldmine’ a Day at Salvation Mountain Ft Nicholas Slick Stewart
My extremely talented friend Slick wanted to film a dance to Goldmine, a song from The Golden Echo that he was particularly inspired by. So on the day of my 25th birthday Kenny took us all to Salvation Mountain ...

2 days, 23 hours ago
Views: 349 • Comments: 0 • Rating: 0
Tweets: 1 • Share to Facebook

Shares: 0
Likes: 0
Comments: 0
: 0
Thanos
Polica - Wedding (Live on the Current)
Polica perform "Wedding" off the album 'United Crushers' live in The Current studio. Listen to the full in-studio session: thecurrent.orgConnect with The Current:thecurrent.orgyoutube.comtwitter.comfacebook.cominstagram.com Become a member:contribute.publicradio.org Current

3 days ago
Views: 342 • Comments: 0 • Rating: 0
Tweets: 1 • Share to Facebook

Shares: 0
Likes: 0
Comments: 0
: 0
Thanos
Tom Winter - Catalyst - Multi-Tracked Acoustic Guitar
An original composition by Tom Winter dedicated to and inspired by the late Michael Hedges. For more of Tom Winter's music, including original music and acoustic video-game arrangements, check out his YouTube channel: youtube.com Follow his Facebook fan page ...

3 days, 23 hours ago
Views: 457 • Comments: 0 • Rating: 0
Tweets: 2 • Share to Facebook

Shares: 0
Likes: 0
Comments: 0
: 0
Thanos
David Bowie - Wild Is the Wind - Live
3 days, 23 hours ago
Views: 536 • Comments: 3 • Rating: 3
Tweets: 1 • Share to Facebook

Shares: 0
Likes: 0
Comments: 0
: 0
Thanos
Earth Wind & Fire - After the Love Is Gone
Earth Wind & Fire - Live in Japan

3 days, 23 hours ago
Views: 340 • Comments: 0 • Rating: 0
Tweets: 9 • Share to Facebook

Shares: 0
Likes: 0
Comments: 0
: 0
Thanos
Earth, Wind & Fire Founder Maurice White Dead at 74 - SFGate
Earth, Wind & Fire founder Maurice White, whose horn-driven band sold more than 90 million albums and made hits like "September," ''Shining Star" and "Boogie Wonderland," died Wednesday at his home in Los Angeles, his brother Verdine said. White, ...

3 days, 23 hours ago
Views: 265 • Comments: 1 • Rating: 1
Tweets: 1 • Share to Facebook

Shares: 0
Likes: 0
Comments: 0
: 0