I noticed Joe Bastardi had recently put the above chart (4,500 years of Global Temperatures) out as a Tweet. I have posted this chart before at CR and thought It was worth another display. This time I have highlighted the main message and also expanded the last couple of decades.
Piers Corbyn's take on this, is that.... Whenever Solar Radiation has Decreased Volcanic Activity has Increased
The original analysis or I should say observation stated in the RED BOX area...."Whenever Solar Radiation has Decreased and Volcanic Activity has Increased, Global Temperatures Suddenly Plummet, often within Weeks or Months."..the trouble with that statement is that it makes it look as if the Volcanic Activity on Earth Changes the level of Solar Radiation on the Sun!!....click source for bigger image
A new study of ice core samples has found the link between sunspot activity and the Sun's solar cycle isn't as strong as previously thought.
Researchers have found the Sun's eleven-year solar cycle continued normally during the Maunder Minimum between 1645 and 1715, when sunspot activity was unusually low.
This was also a time when northern Europe experienced unusually cold conditions.
The discovery, reported in Geophysical Research Letters, comes as the Sun approaches solarmax, the climax of its cycle, when its north and south magnetic poles flip.
The researchers were looking for solar cycle variations by studying beryllium-10 isotope concentrations in ice core samples.
Showers of heavy isotopes including beryllium-10, are produced when cosmic rays, a high-energy mix of protons, electrons, and atomic nuclei from outside the solar system, collide with molecules in the Earth's atmosphere.
A sunspot, like AR1618, is a vast island of magnetism floating on the surface of the sun. Magnetic fields bubble up from the sun's interior to form the sunspot's dark cores much like a Pacific island forming from the lava of an undersea volcano. Phil Scherrer, a member of the Solar Dynamics Observatory science team at Stanford Unniversity, has prepared an 8-day movie showing the genesis of AR1618
A companion movie shows the region's magnetic development. In the movie, which Scherrer made using data from SDO's Helioseismic and Magnetic Imager (HMI), white denotes positive polarity, black denotes negative. Places with mixed polarities are where the magnetic fields can reconnect and erupt, producing solar flares.
With a new 11-year solar cycle that began in 2010, new climate-related troubles may be in store for the planet Earth. The world’s two leading space powers – Russia and the United States – are planning to redouble their efforts to study the solar-terrestrial relationship and space weather.
Russia is preparing to implement its Intergelio-Zond project, which is being developed by researchers at the Space Research Institute (SRI) of the Russian Academy of Sciences. The space vehicle, which is projected to launch in 2018, will enable scientists to get closer to the Sun than ever before. The project is currently in the research stage.
“The vehicle will be sent close to the Sun with the help of a gravity-assist manoeuver near Venus,” said SRI Director Lev Zelyony. “It will be delivered into orbit with a perihelion of 42 million kilometers (26 million miles). The perihelion may be eventually halved to 21 million kilometers (13 million miles), following other gravity-assist maneuvers that make it possible to monitor the same areas of the surface of the Sun for longer periods of time – up to seven days.”
WAITING for solar fireworks to reach a grand finale next year? Um, sorry, looks like you already missed them. Structures in the sun's corona indicate that the peak in our star's latest cycle of activity has been and gone, at least in its northern hemisphere.
The southern hemisphere, meanwhile, is on a sluggish rise to solar maximum and may not hit its peak until 2014.
This bizarre asymmetry strengthens a theory that has been bubbling among sun watchers for the past few years: our star is headed for hibernation. Having the sun's outbursts turned off for a while would provide a better baseline for studying how they influence Earth's climate.
Observations of magnetic footprints called sunspots revealed in the 1800s that the sun moves through a roughly 11-year cycle of activity. Around a solar maximum, the star ramps up production of sunspots, flares and ejections of plasma. During a solar minimum, things quieten down.
Following an unexpectedly deep minimum from 2008 to 2010, solar physicists predicted a weak maximum for 2013. These days, though, sunspots aren't the only tools for charting the solar cycle. Richard Altrock of the US Air Force Research Laboratory in New Mexico has been studying coronal structures called polar crown prominences, which stem from magnetic rumblings on the sun's surface.
Periodic changes in winds 15 to 30 miles high in the stratosphere influence the seas by striking a vulnerable “Achilles heel” in the North Atlantic and changing mile-deep ocean circulation patterns, which in turn affect Earth’s climate.
“We found evidence that what happens in the stratosphere matters for the ocean circulation and therefore for climate,” said Thomas Reichler, senior author of the study.
Funded by the University of Utah, Reichler conducted the study with University of Utah atmospheric sciences doctoral student Junsu Kim, and with atmospheric scientist Elisa Manzini and oceanographer Juurgen Kroger, both with the Max Planck Institute for Meteorology in Hamburg, Germany.
Reichler and colleagues used weather observations and 4,000 years worth of supercomputer simulations of weather to show a surprising association between decade-scale, periodic changes in stratospheric wind patterns known as the polar vortex, and similar rhythmic changes in deep-sea circulation patterns. The changes are:
“Stratospheric sudden warming” events occur when temperatures rise and 80-mph “polar vortex” winds encircling the Artic suddenly weaken or even change direction. These winds extend from 15 miles elevation in the stratosphere up beyond the top of the stratosphere at 30 miles. The changes last for up to 60 days, allowing time for their effects to propagate down through the atmosphere to the ocean.