Tag Archives: Solar variation

More support for Svensmark’s cosmic ray modulation of Earth’s climate hypothesis

There is a new paper in Environmental Research Letters that give additional support to  Henrik Svensmark’s cosmic ray hypothesis of climate change on Earth. The idea is basically this: the suns changing magnetic field has an influence on galactic cosmic … Continue reading

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Posted in Climate News, Cosmic rays, Science | Tagged , , , | 244 Comments

New paper: Clouds blown by the solar wind

This paper suggests a terrestrial impact on cloud cover from the interplanetary electric field (IEF) via the global electric circuit. A primer video on the GEC is below. Clouds blown by the solar wind M Voiculescu et al 2013 Environ. Res. … Continue reading

Posted in Science, Solar | Tagged , , , , , , , | 213 Comments

Claim: Solar, AMO, & PDO cycles combined reproduce the global climate of the past

Guest essay by H. Luedecke and C.O.Weiss We reported recently about our publication [1] which shows that during the last centuries all climate changes were caused by periodic ( i.e. natural ) processes. Non-periodic processes like a warming through the … Continue reading

Posted in Curious things | Tagged , , | 118 Comments

Study predicts the sun is headed for a Dalton-like solar minimum around 2050

Method uses the Ap geomagnetic index, which has been in a slump since October 2005: The Hockey Schtick tips us to a paper published today in Advances in Space Research predicts that if the current lull in solar activity “endures … Continue reading

Posted in Solar | Tagged , , , , , , , | 268 Comments

New paper says ‘No evidence of planetary influence on solar activity’

“Barycentric” influence of the planets on the sun is just statistically insignificant, and a previous paper that claims to find a signal in isotopic records is proven to be nothing more than a statistical artifact. In 2012, Astronomy & Astrophysics … Continue reading

Posted in Science, Solar | Tagged , , , | 311 Comments

The sun is about to have a flipping magnetic field reversal

We’ve been watching the progress on the WUWT solar reference page in this plot from Dr. Leif Svalgaard: Solar Polar Fields – Mt. Wilson and Wilcox Combined -1966 to Present Leif Svalgaard – Click the pic to view at source … Continue reading

Posted in Science, Solar, Space | Tagged , , , , , | 216 Comments

Solar cycle update – sun’s magnetic activity still in a slump

Despite some small upticks on sunspot and 10.7cm radio activity, the magentic activity of the sun is still bumping along the bottom. A slight uptick was seen in sunspot count.  A similar slight uptick occurred in radio flux.

Posted in Solar | Tagged , , , , , , | 137 Comments

Russian Scientists say period of global cooling ahead due to changes in the sun

From Radio Voice of Russia: Russia’s Pulkovo Observatory: “we could be in for a cooling period that lasts 200-250 years” Scientists at Russia’s famous Pulkovo Observatory are convinced that the world is in for a period of global cooling. Graph … Continue reading

Posted in Global cooling | Tagged , , , , , , , | 195 Comments

Current solar cycle data seems to be past the peak

The NOAA Space Weather Prediction Center has updated their monthly graph set and it appears as if the slow downside from what looks like the solar max for cycle 24. Though, it is still possible we could see a second … Continue reading

Posted in Solar | Tagged , , | 239 Comments

A Comparison Of The Earth’s Climate Sensitivity To Changes In The Nature Of The Initial Forcing

Guest post by Bob Irvine ABSTRACT The Earth’s feedback response to warming is independent of the nature of the forcing that caused that warming. The question I intend to examine is whether the nature of the forcing will have a … Continue reading

Posted in Climate sensitivity | Tagged , , , , , | 114 Comments

How long to the 24/25 solar minimum?

Guest post by David Archibald Climate has real world consequences, and those operating in fields that will be affected by changing climate bring a different perspective to the problem of predicting what will happen. Bill Fordham, advising the grain industry … Continue reading

Posted in Science, Solar | Tagged , , , , , , , | 81 Comments

It’s the Sun stupid – The minor significance of CO2

Guest post by Dr. Norman Page 1 The IPCC’s Core Problem The IPCC  - Al Gore based  Anthropogenic Global Warming scare has driven global  Governments’ Climate and Energy Policies since the turn of the century. Hundreds of billions of dollars have been … Continue reading

Posted in IPCC, Solar | Tagged , , , , , , , | 268 Comments

UV shift in the leaked IPCC report: more inversion of the scientific method

Guest post by Alec Rawls A Fox News story on the leaked draft of AR5 got big attention through the Drudge Report the other week. Fox reporter Maxim Lott begins by quoting a sentence from the Second Order Draft that … Continue reading

Posted in IPCC AR5 leak, Solar | Tagged , , , , , , , , | 83 Comments

Commitment studies belie “consensus” claim that a persistent high level of temperature forcing cannot cause continued warming

Guest post by Alec Rawls They say it all the time: even if there were some substantial mechanism of enhanced solar forcing it couldn’t be responsible for late 20th century warming because solar activity was roughly constant from 1950 to … Continue reading

Posted in Climate sensitivity, Cosmic rays | Tagged , , , , , , , | 179 Comments

NASA on the sun: ‘…tiny variations can have a significant effect on terrestrial climate.”

Researchers have considered the possibility that the sun plays a role in global warming. From NASA GSFC:  Solar Variability and Terrestrial Climate In the galactic scheme of things, the Sun is a remarkably constant star.  While some stars exhibit dramatic … Continue reading

Posted in Solar, Spaceweather | Tagged , , , , , , , | 320 Comments

The potential impact of volcanic overprinting of the Eddy Minimum

Guest post by David Archibald There were five named solar minima in the last millennium – the Oort, Wolf, Spörer, Maunder and Dalton minima. At least the last four were all associated with cold climates. The astrophysics community has elected … Continue reading

Posted in Uncategorized | Tagged , , , | 105 Comments

New paper demonstrates that climate responds to short and long-term changes in solar activity

(Via the Hockey Schtick) A new peer reviewed paper published in The Holocene finds a significant link between solar activity and climate over the past 1000 years. According to the authors: “Our results suggest that the climate responds to both … Continue reading

Posted in Solar | Tagged , , , | 143 Comments

Dana Nuccitelli’s holiday trick for sobering up quick: put a little less rum in your egg nog

Guest post by Alec Rawls When he argues that a reduction in forcing will cause cooling Dana Nuccitelli is not actually talking about drinking. He is talking about the solar forcing of global temperature, but the drinking analogy is a handy … Continue reading

Posted in Cosmic rays | Tagged , , , , , , | 400 Comments

IPCC Chapter 11 – Bankruptcy Protection

Guest post by David M. Hoffer IPCC reports AR1 through 4 were published in relative obscurity. ClimateGate and the emergence of the blogosphere as the primary forum for debate of the science and public policy intersection changed all that. AR4 … Continue reading

Posted in IPCC, IPCC AR5 leak | Tagged , , , , , , , | 97 Comments

A rebuttal to Steven Sherwood and the solar forcing pundits of the IPCC AR5 draft leak

Teaming up with Jo Nova to answer The Team down under: “Professor Sherwood is inverting the scientific method” Guest post by Alec Rawls My leak of the draft IPCC report emphasized the chapter 7 admission of strong evidence for solar … Continue reading

Posted in Cosmic rays, IPCC, IPCC AR5 leak, Science | Tagged , , , , , , | 290 Comments

Isaac Held’s 2-box model: another failed ocean-equilibration excuse for dismissing solar warming

Guest post by Alec Rawls Dr. Isaac Held, who models fluid dynamics at NOAA, dismisses a solar explanation for late 20th century warming by invoking a 2-box model of ocean equilibration. In his model an upper upper ocean layer (100m … Continue reading

Posted in Modeling | Tagged , , , , , , , | 133 Comments

Solar Activity – Past, Present, Future

Essay/paper by Dr. Leif Svalgaard Abstract As our civilization depends increasingly on space-borne assets and on a delicate and vulnerable earth-bound infrastructure, solar activity and its potential impact becomes of increasing importance and relevance. In his famous paper on the … Continue reading

Posted in Science, Solar | Tagged , , , , , , , | 207 Comments

Is there a planetary influence on solar activity? It seems so according to this new paper

Guest post by David Archibald   Long suspected, it seems that this has now been confirmed by a paper in Astronomy and Astrophysics with the title “Is there a planetary influence on solar activity?” by Abreu et al that was … Continue reading

Posted in Science, Solar | Tagged , , , | 291 Comments

Muscheler retracts? Offers a NEW excuse for why solar activity can’t be responsible for post-70′s warming

Guest post by Alec Rawls Technically Dr. Muscheler is asking me to retract the title of my post, “Raimund Muscheler says that a steady high level of forcing can’t cause warming“: I am sure that you are aware of the fact … Continue reading

Posted in PDO, Solar | Tagged , , , , , | 170 Comments

Raimund Muscheler says that a steady high level of forcing can’t cause warming

Guest post by Alec Rawls Solar warming and ocean equilibrium, part 4 I emailed Dr. Muscheler about the very strange remarks that were attributed to him in the recently released report on last year’s NCAR workshop: The Effects of Solar … Continue reading

Posted in Uncategorized, Cosmic rays | Tagged , , , | 141 Comments

Paper demonstrates solar activity was at a grand maximum in the late 20th century

Solar activity measured by isotope proxies revealed the end of 20th century was the highest activity in 1200 years A 2010 paper (that I somehow missed) was recently highlighted by the blog The Hockey Schtick and I thought it worth … Continue reading

Posted in Solar | Tagged , , , , , | 99 Comments

Another regime change indication – this time in solar data

Note: See also the 1997 regime change in global climate data by the same method, here I’m happy to report that something I recognized and reported back in 2008 related to solar data has been independently confirmed by another source, … Continue reading

Posted in Science, Solar | Tagged , , , , | 107 Comments

The Sun has changed its character

Guest post by David Archibald A number of solar parameters are weak, and none is weaker than the Ap Index: Figure 1: Ap Index 1932 to 2026 Figure 1 shows the Ap Index from 1932 with a projection to the … Continue reading

Posted in Solar, Spaceweather | Tagged , , , , , , , | 176 Comments

NASA June 2012 Solar Cycle 24 Prediction

Compiled by Joe D’aleo WeatherBell via NASA MSFC The current prediction for Sunspot Cycle 24 gives a smoothed sunspot number maximum of about 60 in the Spring of 2013. We are currently over three years into Cycle 24. The current … Continue reading

Posted in Solar, Spaceweather | Tagged , , , , , , , | 83 Comments

Another day, another Central Asian precipitation study finds a link to solar activity

From Sun and Liu 2012: all of the deep solar minima of the last millennium (Oort, Wolf, Spörer, Maunder and Dalton) correspond to periods of drought in the Qilian Mountains of the northeastern Tibetan Plateau according to this tree-ring study. … Continue reading

Posted in Paleoclimatology, Proxies, Solar | Tagged , , , , , , , | 56 Comments

Solar grand minima linked to cooling period in Europe

This is interesting. A quick cooling in Europe together with an increase in humidity and particularly in windiness was found to coincide with a long-term reduction in solar activity 2800 years ago during something called the “Homeric minimum”. The paper … Continue reading

Posted in Paleoclimatology, Solar | Tagged , , , , , , , , | 118 Comments

NASA/Hathaway’s updated solar cycle prediction – smallest in 100 years

…the predicted size makes this the smallest sunspot cycle in about 100 years (Updated 2012/05/01) From: http://solarscience.msfc.nasa.gov/predict.shtml The current prediction for Sunspot Cycle 24 gives a smoothed sunspot number maximum of about 60 in the Spring of 2013. We are … Continue reading

Posted in Science, Solar | Tagged , , , , , , | 134 Comments

From Schmidt 2005 to Miller 2012: the “not needed” excuse for omitted variable fraud

Guest post by Alec Rawls Miller et al. 2012 recently provided some pretty strong evidence for a solar driver of climate. “This is the first time anyone has clearly identified the specific onset of the cold times marking the start … Continue reading

Posted in Paleoclimatology | Tagged , , , , , , , | 192 Comments

Back-testing the Solar – Sea Level Relationship

Guest post by David Archibald This is a little bit amusing. In February, I had a post on the solar – sea level relationship which quantified the sea level fall to come to the end of Solar Cycle 25: http://wattsupwiththat.com/2012/02/03/quantifying-sea-level-fall/Continue reading

Posted in Sea level, Solar | Tagged , , , | 136 Comments

New paper in the Journal of Atmospheric and Solar-Terrestrial Physics demonstrates that planets do not cause solar cycles

Planetary effects are too small by several orders of magnitude to be a main cause of the solar cycle. Argiris Diamantis writes in with this tip: Professor Cornelis de Jager from the Netherlands has put a new publication on his … Continue reading

Posted in Science, Solar | Tagged , , , , | 325 Comments