Pages

5 comments

Jump to bottom
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.

^ back to top ^

TwitterFacebook

Turn off all ads for a full year by subscribing!
For about 33 cents a day (per month) or 22 cents a day (per year), our subscription option turns off all advertisements at LGF!
Read more...

► LGF Headlines

  • Loading...

► Tweeted Articles

  • Loading...

► Tweeted Pages

  • Loading...

► Top 10 Comments

  • Loading...

► Bottom Comments

  • Loading...

► Recent Comments

  • Loading...

► Tools/Info

► Tag Cloud

► Contact

You must have Javascript enabled to use the contact form.
Your email:

Subject:

Message:


Messages may be published unless you request otherwise.
Tech Note:
Using the Contact Form
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: 2014-03-07 2:19 pm PST

LGF User's Guide
Recent Pages
Randall Gross
Who’s Funding ISIS? Wealthy Gulf ‘Angel Investors,’ Officials Say - NBC News.com
NBC Terror groups don't exist in a vacuum - most have state sponsorship, but some were spun up by evil individuals. A small but steady flow of money to ISIS from rich individuals in the Gulf continues, say current and ...

41 minutes ago
Views: 73 • Comments: 0
Tweets: 0 • Rating: 0
Souliren
Cape Breton fiddler Andrea Beaton
Celtic Colours Festival 2010 Everyone seems to be having fun here.

15 hours, 45 minutes ago
Views: 101 • Comments: 2
Tweets: 0 • Rating: 2
Bubblehead II
LOHAN Coming to the States
Cool. Due to Spain being a jerk, the Registers bringing their LOHAN project to the States. More specifically, New Mexico's Spaceport America Don't let the cheesy writing style and Brit humor of the Registers reporters put you off. There is ...

17 hours, 39 minutes ago
Views: 138 • Comments: 0
Tweets: 0 • Rating: 2
FemNaziBitch
‘I Was Really Stressed Out’: Anxiety Rules the Secret Life of Teens - Parents - TODAY.com
When hormones, grades and peer pressure rule your life, turmoil often follows. Yet many families don't realize how crippling the stress can be for their teenagers. TODAY's series on the secret lives of teens began Wednesday with NBC special ...

1 day, 18 hours ago
Views: 223 • Comments: 0
Tweets: 0 • Rating: 0
theliel
AEI Decides to Weigh in on #GamersGate
So Polygon showcases the AEI's anti-femminist response to #gamergate talking about how games are for dudes and dudes need that space to continue being dudes and bitches should get back in that kitchen where they belong. Link is to Polygon ...

3 days, 17 hours ago
Views: 307 • Comments: 0
Tweets: 0 • Rating: 1
CriticalDragon1177
Alternet - Nicholas Wade’s Flawed Book Rewrites the History of Scientific Racism
Jon Phillips takes on Nicholas Wade's claims, and proves once again that so called "scientific" racism is little more than a pseudoscience. This was originally posted in September 2014 edition of the Southern Poverty Law Center's Intelligence Report, ( ...

4 days, 12 hours ago
Views: 477 • Comments: 3
Tweets: 3 • Rating: 5
Lumberhead
Angry Letters to the One Member of Congress Who Voted Against the War on Terror - the Atlantic
My first attempt at a page - so here we go: The article is a little long but well worth while. I found it to be nicely balanced with interesting excerpts from supporters as well as detractors. Barbara Lee was ...

5 days, 14 hours ago
Views: 504 • Comments: 2
Tweets: 1 • Rating: 5
The War TARDIS
Doctor Who “Listen” Open Thread
I'm back. Last week, I couldn't do this thread, as something more important was going on. One of my best friends, a sweet, and very devout Christian, is going to the UK to help a Christian Group in Oxford, and ...

1 week ago
Views: 461 • Comments: 42
Tweets: 0 • Rating: 3
Rightwingconspirator
Are Higher Frame Rates Really a Better Moving Image in Cinema?
As a guy who scratches the surface of this medium with humble indy efforts and some industrial video experience I have to watch carefully. If I commit to the wrong camera or format, it can hurt financially. Once I had ...

1 week, 1 day ago
Views: 672 • Comments: 7
Tweets: 25 • Rating: 7
Slap
For guitar fans…
I suppose one needs to be a guitar freak of a certain age to recognize both of these guys. Gabrels' work might be familiar to fans of Bowie/Tin Machine. Nelson's work? I believe him to be one of the most ...

1 week, 1 day ago
Views: 504 • Comments: 2
Tweets: 0 • Rating: 1
 Frank says:

Ladies and gentleman, watch Ruth. All through the show, Ruth has been thinking...Ruth has been thinking? ALL THROUGH THE SHOW??? -- 17 November 1974, Philadelphia