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

Help support Little Green Footballs!

Subscribe now for ad-free access!

LGF Pages

This button leads to the main index of LGF Pages, our user-submitted articles. You can post your own LGF Pages simply by registering a free account with us.

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: 2015-08-02 10:58 am PDT

LGF User's Guide RSS Feeds
Recent Pages
aagcobb
Don’t Teach a Man to Fish. Just Give Him the Goddamn Fish. - Vox
Dylan Matthews, Vox: Don't Teach a Man to Fish. Just Give Him the Goddamn Fish. - Vox We can be pretty sure some things -- like supplying free anti-malarial bednets and providing deworming pills, or cash -- work. But for ...

6 hours, 15 minutes ago
Views: 96 • Comments: 1
Tweets: 0 • Rating: 0
VickieHaz
How you can Change your Lifestyle for the Greener
In the western world, we hear a lot about how our lifestyles can have quite a negative impact on the environment. We live in a time dominated by technologies and conveniences which as useful as they are, aren't the most ...

18 hours, 38 minutes ago
Views: 192 • Comments: 1
Tweets: 2 • Rating: 2
Thanos
Accelerated Pace of Kansas City Public Library’s Book-Culling Process Upsets Volunteers
It's like "Rainbow's End". Sylvia Stucky, a longtime member of Friends of the Kansas City Public Library, stood in the lobby of the Central Library downtown one day last week and opened her shoulder bag. "I just saved these from ...

1 day, 4 hours ago
Views: 342 • Comments: 3
Tweets: 1 • Rating: 2
I Stand With Planned Parenthood
Jimmy Carter: America Is Not a Democracy Anymore (AUDIO)
Former President Jimmy Carter called the United States an "oligarchy" with "unlimited political bribery," on a radio program this week. More: Jimmy Carter: America Is Not a Democracy Anymore (AUDIO)

1 day, 18 hours ago
Views: 323 • Comments: 0
Tweets: 0 • Rating: 1
Cheechako
Iditarod Champ Dallas Seavey Adds Dog Treadmill to Training Repertoire
Suzanna CaldwellAlaska Dispatch NewsAugust 1, 2015 WILLOW -- Forget the gentle swoosh of sled runners over snow. Iditarod champion Dallas Seavey's summer training offers a stark contrast to his winter routine: more than a dozen dogs yapping manically in a ...

3 days, 3 hours ago
Views: 689 • Comments: 1
Tweets: 11 • Rating: 1
Eclectic Cyborg
MS GOP rep campaigns on pro Confederate Flag platform
So this showed up at my house today, it's an election mailer from one Jeffrey Guice who is running for re-election to the Mississippi State Senate. As you can see, it included an interesting detail... So basically he's taking pride ...

5 days, 7 hours ago
Views: 768 • Comments: 2
Tweets: 57 • Rating: 3
EiMitch
Cracked: 5 Sworn Enemies Who Formed Inspiring Friendships
I was catching-up with Cracked articles. I found an obvious click-bait article, "4 Sexual Preferences That Only Recently Became Taboo": cracked.com Knowing that, I read it anyway. From there, I read a depressing article, "5 Ways College Screws Over Poor ...

5 days, 12 hours ago
Views: 599 • Comments: 1
Tweets: 0 • Rating: 3
Skip Intro
Windows 10 is out. Help a guy out, please.
So I downloaded the Win 10 ISO image today, and started the install. The first thing I come across is a screen asking what I want to keep, my apps, data, and program settings, my data and program settings, or ...

6 days, 15 hours ago
Views: 871 • Comments: 8
Tweets: 0 • Rating: 0
Great White Snark
Huffington Post Arabic-Smart Outreach, Sure To Infuriate Bigots
Dirct Link: Huffington Post Arabic - Kudos! Good to see this. The link takes you right there, but for us non arabic readers, a helpful translate panel comes right up. You who do read arabic can judge the content, ...

1 week, 1 day ago
Views: 868 • Comments: 1
Tweets: 19 • Rating: 1
Iwouldprefernotto
More Edited PP Videos
NYT -- More Edited PP Videos in the Pipeline The activist behind the videos, David Daleiden, has said he has enough covertly recorded footage for perhaps a dozen videos that he could release, one a week, for the next few ...

1 week, 1 day ago
Views: 507 • Comments: 0
Tweets: 0 • Rating: 2
 Frank says:

We'll get back to the wimp, and his low-budget conception of personal freedom, in just a moment -- Thing-Fish.