Category Archives: Solar

Historical and present Total Solar Irradiance has been tinkered with again

One of the big problems of climate science is uncertainty. Some things that always seem to be in flux are historical datasets, partly because, well, they have so much inherent uncertainty built in. Such is the case of the Historical … Continue reading

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Posted in Solar | 184 Comments

January solar cycle 24 numbers, a new high for one, continued slumps for others

The NOAA Space Weather Prediction Center released their January 2014 solar data, and it has one small surprise, the 10.7 radio flux is the highest ever in cycle 24, the other metrics, not so much. SSN has been about where … Continue reading

Posted in Solar | 210 Comments

BBC runs 6 excellent minutes on quiet sun and past correlation with Little Ice Age

Guest post by Alec Rawls Nice hype by Matt Drudge, whose three linked quotes are all from the BBC’s one brief paragraph of text, but the accompanying video (full transcription below) is more substantial, with scientists talking about the likelihood … Continue reading

Posted in Climate News, Solar | 294 Comments

New study claims low solar activity caused “the pause” in global temperature – but AGW will return!

This is on a tip from Dr. Leif Svalgaard, WUWT’s resident solar expert. It was just published in the journal Atmospheric and Climate Sciences, and is open access. I found this study’s conclusion a bit amusing, because there are numerous … Continue reading

Posted in Climate News, ENSO, Hiatus in Global Warming, Peer review, Science, Solar | Tagged , , | 180 Comments

The Solar storm has arrived – initial impact weaker than expected

From NASA: Spaceweather: As expected, a CME hit Earth’s magnetic field on Jan. 9th (around 20:00 UTC or 3 p.m. EST). Although the initial impact was weaker than expected, geomagnetic storms could still develop as Earth passes through the CME’s … Continue reading

Posted in solar flare, Spaceweather | 57 Comments

Upwelling Solar, Upwelling Longwave

Guest Post by Willis Eschenbach The CERES dataset contains three main parts—downwelling solar radiation, upwelling solar radiation, and upwelling longwave radiation. With the exception of leap-year variations, the solar dataset does not change from year to year over a few … Continue reading

Posted in Climate data, Radiative Imbalance, Solar | Tagged , , | 348 Comments

X class solar flare ejection may hit Earth with solar storm

From the WUWT Solar Reference page, an X 1.2 event has occurred: From NASA Spaceweather: Giant sunspot AR1944 erupted on Jan 7th at approximately 1832 UT, producing a powerful X1-class solar flare. First-look coronagraph images from the STEREO-Ahead spacecraft appear … Continue reading

Posted in Solar, solar flare, Spaceweather | 104 Comments

On The Stability and Symmetry Of The Climate System

Guest Post by Willis Eschenbach The CERES data has its problems, because the three datasets (incoming solar, outgoing longwave, and reflected shortwave) don’t add up to anything near zero. So the keepers of the keys adjusted them to an artificial … Continue reading

Posted in Climate data, Radiative Imbalance, Solar | Tagged , , , , | 306 Comments

MSM finally gets that the sun’s magnetic field has flipped

While we’ve known about this for quite some time at WUWT, going back to August 2013, the story is now starting to make the rounds in the MSM. And, NASA has created a cool visualization of the event. Video follows. … Continue reading

Posted in Solar | Tagged , | 166 Comments

Gavin was for solar forcing of climate before he was against it

Readers may recall when Dr. Gavin Schmidt appeared on a television program with Dr. Roy Spencer, but by Gavin’s cowardly choice, not at the same time. After listing the known causes for climate change aka global warming, Gavin Schmidt said: … Continue reading

Posted in Global cooling, Global warming, Solar | 159 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 activity not a key cause of climate change, study shows

From the University of Edinburgh , another one-paper syndrome in the making funded by an NGO research council with a political mission to grab a headline. And, another poorly written press release where they don’t even cite the name of … Continue reading

Posted in Modeling, Science, Solar | Tagged , , , , , , , | 182 Comments

Leif Svalgaard at AGU on the Current Solar Cycle: ‘None of us alive have ever seen such a weak cycle’

WUWT’s resident solar expert Dr. Leif Svalgaard (and others) says  ‘None of us alive have ever seen such a weak cycle’  and the panel he was on talk about the current state of our solar cycle at the AGU Fall … Continue reading

Posted in AGU 2013, Solar | Tagged , , , , , | 201 Comments

From AGU: comet ISON’s struggle of Fire and Ice

San Francisco – After a year of observations, scientists waited with bated breath on Nov. 28, 2013, as Comet ISON made its closest approach to the sun, known as perihelion. Would the comet disintegrate in the fierce heat and gravity … Continue reading

Posted in AGU 2013, Astronomy, Solar, Space | Tagged , , , | 41 Comments

Zombie asks a question

Zombie, of San Francisco’s “Zombietime” fame, writes in with a question that he has graciously allowed to be given to our readers. He writes: I’m preparing to write an essay on the following hypothesis: Solar power installations, especially in desert … Continue reading

Posted in Solar | Tagged , , | 176 Comments

Giant Convection Cells Found on the Sun

NASA’s Dr. David Hathaway has just published a new paper, and it has advanced solar science. He’s found something they’ve been looking for a long time; long lived convection cells. Massive, long-lasting plasma flows 15 times the diameter of Earth … Continue reading

Posted in Science, Solar | Tagged | 61 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

Sunspot group AR1890 takes direct aim at earth

May produce a dangerous X-class flare that could directly impact Earth Steve Davidson writes: Right now, today, one of the largest sunspot groups of Cycle 24 – AR1890 – is pointing nearly strait at Earth. AR1890 has already produced a … Continue reading

Posted in Solar, solar flare, Spaceweather | Tagged , , , | 78 Comments

October 2013 Sunspots: Largest jump in Solar cycle 24 so far

Looks like a double peak for cycle 24 is forming As many WUWT readers have noted in comments, October 2013 has been significantly more active than the previous several months, and we have not seen this level of activity since … Continue reading

Posted in Solar | Tagged , , | 133 Comments

New paper suggests the sun’s magnetic fields defines climate over the long term

Story submitted by Cornelis de Jager (past president ICSU;past pres. COSPAR) In a recent publication entitled Terrestrial ground temperature variation in relation to solar magnetic variability, including the present Schwabe cycle, Cornelis (Kees) de Jager and Hans Nieuwenhuijzen, from the … Continue reading

Posted in Paleoclimatology, Solar | Tagged , , | 144 Comments

BBC – Real risk of a Maunder minimum ‘Little Ice Age’

From BBC’s Paul Hudson It’s known by climatologists as the ‘Little Ice Age’, a period in the 1600s when harsh winters across the UK and Europe were often severe. The severe cold went hand in hand with an exceptionally inactive … Continue reading

Posted in Solar | Tagged , , , , | 188 Comments

70-year-old conundrum of the hot solar corona may be solved

From Columbia University Astronomers find clues to decades-long coronal heating mystery Drs. Michael Hahn and Daniel Wolf Savin, research scientists at Columbia University’s Astrophysics Laboratory in New York, NY, found evidence that magnetic waves in a polar coronal hole contain … Continue reading

Posted in Solar | Tagged , , | 175 Comments

A link between the solar magnetic field and weather patterns on Earth may explain our lower than normal severe weather in 2013

From the “science is settled” department comes this new paper that points out a correlation between the Interplanetary Magnetic Field (IMF) and polar jet streams, which drive weather events on Earth. This new paper shows that the effects extend even … Continue reading

Posted in hurricanes, Solar, thunderstorms, tornadoes, Weather | Tagged , , , | 86 Comments

September doldrums – solar slump continues

While many science related government agencies are shut down (NASA GISS is deemed ‘non-essential’ for example) some remain open due to statements like this: Due to the Federal Government shutdown, NOAA.gov and most associated web sites are unavailable. However, because … Continue reading

Posted in Solar | Tagged , , , , , , , | 233 Comments

Retro 3D climate model applied to faint young sun paradox

From the AGU weekly highlights: Evaluating solutions to the faint young Sun problem During the Archean eon, between about 3.8 billion years ago and 2.5 billion years ago, the Sun was about 20 to 25 percent fainter than it is … Continue reading

Posted in Carbon dioxide, Paleoclimatology, Solar | Tagged , , , , , , , , | 96 Comments

Like ‘the pause’ in surface temperatures, ‘the slump’ in solar activity continues

The NOAA Space Weather Prediction Center has updated their monthly graph set and it is becoming even more clear that we are past solar max, and that solar max has been a dud. “The slump” continues not only in sunspot … Continue reading

Posted in Solar | Tagged , , , , , , , | 665 Comments

The Climate-Grain Production Relationship Quantified

Guest essay by David Archibald There is now consensus that the Sun has now entered a quiet period. The first paper from the solar physics community predicting the current quiet period was Schatten and Tobiska’s 2003 paper “Solar Activity Heading … Continue reading

Posted in Agriculture, Solar | Tagged , , , , , , , | 222 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

A new understanding of the solar dynamo published

Our resident solar expert, Dr. Leif Svalgaard, sends word of this new discovery. Stanford solar scientists solve one of the sun’s mysteries The sun’s magnetic field can play havoc with communications technology. Stanford scientists have now described one of the … Continue reading

Posted in Astronomy, Solar | Tagged , , , | 368 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

About that almost ‘Carrington Event’ two weeks ago

Lots of people talking about this article in the UK daily Mail: A near miss for Earth: Solar flare that could have knocked out power, cars and phones came so close two weeks ago Earth has narrowly missed electromagnetic pulses … Continue reading

Posted in Solar | Tagged , , , | 224 Comments

Solar Cycle 24 Update

Guest essay by David Archibald Recently, a number of newspaper articles spoke of the potential of cycle 25 to be   “Weakest Solar Cycle In Almost 200 Years”. “We’re in a new age of solar physics,” said David Hathaway of NASA’s … Continue reading

Posted in Science, Solar | Tagged , | 212 Comments

Newsbytes: Sunspot Enigma – Will Inactive Sun Cause Global Cooling?

 From Dr. Benny Peiser and the GWPF We Really Don’t Understand Our Climate Something is happening to our sun. If history is anything to go by, the sun’s change of mood could affect us all by cooling the earth and … Continue reading

Posted in Global cooling, Newsbytes, Solar | Tagged , | 127 Comments

Remarkable correlation of Arctic sea ice to solar cycle length

This is interesting, especially since Solar Cycle 23 was quite long. The Hockey Schtick writes: A paper published by the Danish Meteorological Institute finds a remarkable correlation of Arctic sea ice observations over the past 500 years to “the solar … Continue reading

Posted in Arctic, Sea ice, Solar | Tagged , , , , , , , | 108 Comments

The solar cycle is still slumping

It is looking more and more like a double sunspot peak for solar cycle 24. Sunspot count is down again:  A similar drop occurred in radio flux.

Posted in Solar | Tagged , , , , | 226 Comments