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 PageThis 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 Tweet

Help support Little Green Footballs!

Subscribe now for ad-free access!Register and sign in to a free LGF account before subscribing, and your ad-free access will be automatically enabled.

Recent PagesClick to refresh
Sandy Hook Denier Arrested After Death Threats Made to Parent of Victim The ceremony of innocence is drowned;The best lack all conviction, while the worstAre full of passionate intensity. It's what you enable when you allow the crazy to become the norm. A Florida woman who believes the Sandy Hook Elementary ...
Thanos
20 minutes ago
Views: 35 • Comments: 0 • Rating: 0
Tweets: 0 • Share to Facebook
Shares: 0
Comments: 0
: 0
Anthony Bourdain: ‘We Gave It Everything We Had’ Going Anamorphic On a far more humble scale I do some documentary film work. And like photography, once you master certain skills over time, maybe you make as good a product as your gear can manage. Anthony Bourdain and his crew ...
Unshaken Defiance
2 hours, 4 minutes ago
Views: 68 • Comments: 0 • Rating: 0
Tweets: 1 • Share to Facebook
Shares: 0
Comments: 0
: 0
Life in Obamacare’s Dead Zone “She was always the steady one,” her sister, Karen Smith Walker, says. “The one who could solve any problem. Always with a book. Always studying.” But now, after years of living with this desperation, Foy didn’t know how to ...
Thanos
2 hours, 13 minutes ago
Views: 69 • Comments: 0 • Rating: 0
Tweets: 1 • Share to Facebook
Shares: 0
Comments: 0
: 0
How Supergirl’s Alex Danvers Made a Queer Teen Realize She’s Not Alone Since Supergirl premiered last year, the character of Alex Danvers has been a role model for young women: badass spy and scientist, loving and supportive sister to Supergirl/Kara Danvers, an integral part of the show’s emotional core. This season, ...
William Lewis
2 hours, 30 minutes ago
Views: 43 • Comments: 0 • Rating: 0
Tweets: 0 • Share to Facebook
Shares: 0
Comments: 0
: 0
Rhythm of Breathing Affects Memory and Fear - Neuroscience News Summary: A new study reports the rhythm of your breathing can influence neural activity that enhances memory recall and emotional judgement. Source: Northwestern University. Breathing is not just for oxygen; it’s now linked to brain function and behavior. Northwestern ...
Birth Control Works
4 hours, 41 minutes ago
Views: 99 • Comments: 0 • Rating: 0
Tweets: 0 • Share to Facebook
Shares: 0
Comments: 0
: 0
Trump Tweets Lowering Drug Pricesmoney.cnn.com Investors bet that Trump would be far less likely to crack down on controversial drug price hikes compared to his rival Hillary Clinton, who had spoken out against the increases and even had a plan to lower prices. Shares ...
Rocky-in-Connecticut
5 hours, 2 minutes ago
Views: 97 • Comments: 0 • Rating: 0
Tweets: 0 • Share to Facebook
Shares: 0
Comments: 0
: 0
Chocolate Peppermint Bars Recipe - NYT Cooking Ingredients For the chocolate shortbread: 1 cup/125 grams all-purpose flour ½ cup/100 grams granulated sugar 2 tablespoons/15 grams unsweetened cocoa powder ¼ teaspoon kosher salt 8 tablespoons/113 grams unsalted butter (1 stick) For the peppermint filling and chocolate top: ...
The Vicious Babushka
5 hours, 6 minutes ago
Views: 96 • Comments: 0 • Rating: 0
Tweets: 3 • Share to Facebook
Shares: 0
Comments: 0
: 0
The Originalist -Justice Antonin Scalia - Jan 2011 Last October marked the 24th anniversary of Justice Antonin Scalia's appointment to the U.S. Supreme Court. Well known for his sharp wit as well as his originalist approach to the Constitution, Justice Scalia consistently asks more questions during oral ...
Birth Control Works
5 hours, 17 minutes ago
Views: 92 • Comments: 0 • Rating: 0
Tweets: 1 • Share to Facebook
Shares: 1
Comments: 0
: 1
The Virility of Fascists These pieces, which have recently branched out from Spencer to whimsical descriptions of European-based neo-Nazi groups more broadly, share a fascination with his virility. They are almost eager to reassure readers that, despite the fact that Spencer throws around ...
Birth Control Works
5 hours, 44 minutes ago
Views: 134 • Comments: 0 • Rating: 0
Tweets: 0 • Share to Facebook
Shares: 0
Comments: 0
: 0
‘There Are People Who Are Really Angry With Women Who Dare to Determine Their Reproduction Choices — Let Alone Run for Presiden With fewer legal requirements and methods, she said, it was less complicated back then, because PP mainly only offered diaphragms and pills. However, women had to “qualify” for tubal ligations—if enough money existed for one. One-month counseling sessions were ...
Birth Control Works
5 hours, 52 minutes ago
Views: 112 • Comments: 0 • Rating: 0
Tweets: 0 • Share to Facebook
Shares: 0
Comments: 0
: 0