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The Critique of Knud Jahnke and a New Meteor Exposure Age Analysis
An Iron meteorite, a large sample of which can be used to reconstruct the past cosmic ray flux variations. The reconstructed signal reveals a 145 Myr periodicity shown below. This particular one is...
View ArticleComments on nature's "A cosmic connection"
Last week, a report by Jeff Kanipe appeared in nature. In it, Kanipe explains the solar → cosmic-ray → climate connection, and the planned CLOUD experiment in CERN, expected to finally resolve the...
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On Climate Sensitivity and why it is probably small
What is climate sensitivity? The equilibrium climate sensitivity refers to the equilibrium change in average global surface air temperature following a unit change in the radiative forcing. This...
View ArticleOn the IPCC's summary for policy makers, and on getting interviewed without...
Just like everybody else, I heard that the IPCC fourth assessment report (4AR) was out. So, I wanted to read it, to see which delights I could find there. To my surprise however, I realized that the...
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The inconvenient truth about the Ice core Carbon Dioxide Temperature...
One of the "scientific" highlights in Al Gore's movie is the discussion about the clear correlation between CO2 and temperature, as is obtained in ice cores. To quote, he says the following when...
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The Hebrew University debate on Global Warming
On Sunday last week, a global warming debate was held at the Hebrew University, in front of a large public audience. The speakers included myself, and Prof. Nathan Paldor from the HU, on the so called...
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More slurs from realclimate.org
Realclimate.org continues with its same line of attack. Wishfulclimate.org writers try again and again to concoct what appears to be deep critiques against skeptic arguments, but end up doing a very...
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Is the causal link between cosmic rays and cloud cover really dead??
Just recently, Sloan and Wolfendale published a paper in Environmental Research Letters, called"Testing the proposed causal link between cosmic rays and cloud cover". In the Institute of Physics Press...
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The oceans as a calorimeter
I few months ago, I had a paper accepted in the Journal of Geophysical Research. Since its repercussions are particularly interesting for the general public, I decided to write about it. I would have...
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Earth Day Blackout in Israel vs. Al Gore
A week ago was Earth day, and just like the trend elsewhere, Israel joined with an hour long blackout. In principle, I am very much in favor of environmental awareness, and if it brings some, so be it....
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To the hebrew readers of sciencebits לקוראי העברית של סאינס-ביטס
לאור העובדה שלא מעט מקוראי האתר בעברית מתענינים בנושא של השפעת השמש על האקלים, מצאתי לנכון "לפרסם"תרגום לעברית של הספר "chilling stars"של הנריק סוונסמרק ונייג`ל קולדר, שהם ידידי. הספר "הכוכבים...
View ArticleExpert credibility in climate change?
I recently stumbled upon one of the most meaningless papers I have ever seen, it is called "Expert credibility in climate change" by Anderegg, Prall, Harold and Schneider. The paper "proves" that the...
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20th century global warming - "There is nothing new under the Sun" - Part I
With the exception of those who have been living in a dark cave, it is well known that Earth has warmed over the 20th century. Anyone who reads papers or watches TV knows that it is humans who are...
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20th century global warming - "There is nothing new under the Sun" - Part II
Back to Part ISolar Activity and Climate It is already more than 200 years since Sir William Herschel claimed that variations in solar activity affect climate on Earth. Since he did not have any...
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20th century global warming - "There is nothing new under the Sun" - Part III
Back to Part IICosmic Rays and Climate The second type of mechanisms is indirect, through the solar modulation of the cosmic ray flux and the effect that the latter may have on the climate. Cosmic rays...
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The CLOUD is clearing
The CLOUD collaboration from CERN finally had their results published in nature, showing that ionization increases the nucleation rate of condensation nuclei. The results are very beautiful and they...
View ArticleWhat is your expertise, and what is the cause of 20th century climate change?
Laymen, mostly anthropogenic 2% (8 votes) Laymen, mostly natural 45% (193 votes) Laymen, nobody knows 7% (31 votes) General scientist, mostly anthropogenic 1% (6 votes) General scientist, mostly...
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On IPCCs exaggerated climate sensitivity and the emperor’s new clothes
A few days ago I had a very pleasant meeting with Andrew Bolt. He was visiting Israel and we met for an hour in my office. During the discussion, I mentioned that the writers of the recent IPCC reports...
View ArticleCauses of Climate Change - Poll Results
Out of curiosity, I opened a few weeks ago a poll asking the visitors of this site, what do they think is the primary cause of global warming. 429 people answered the poll (thanks to all of you!). The...
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Does the global temperature lag CO2? More flaws in the Shakun et al. paper in...
Over the past two weeks, perhaps a dozen people asked me about the recently published paper of Shakun et al. in Nature. It allegedly demonstrates that the global temperature followed CO2 around the...
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