OK, it is almost the newspapers way of displaying things.
But what have lead them to speculate this?
Has their speculation any justified reason?
But what have lead them to speculate this?
Has their speculation any justified reason?
The mystery of sunspots
- Thread starter eanassir
- Start date
Yep. The ice is retreating farther north. As to when/if it disappears altogether, tough to say.
Sun poised to make history with first spotless month since 1913
30 08 2008
Many people that have have an interest in the interaction between the Sun and Earth have been keeping a watchful eye on several metrics of solar activity recently. The most popular of course has been sunspot watching.
The sun has been particularly quiet in the last several months, so quiet in fact that Australia’s space weather agency recently revised their solar cycle 24 forecast, pushing the expected date for a ramping up of cycle 24 sunspots into the future by six months.
On August 31st, at 23:59 UTC, just a little over 24 hours from now, we are very likely to make a bit of history. It looks like we will have gone an entire calendar month without a sunspot. According to data from NOAA’s National Geophysical Data Center, the last time that happened was in June of 1913. May of 1913 was also spotless.
With the current space weather activity level of the Sun being near zero, and the SOHO holographic imaging of the far side of the sun showing no developing spots that would come around the edge in the next 24 hours, it seems a safe bet to conclude that August 2008 will be the first spotless month since June 1913.
Some people who watch the sun regularly might argue that August wasn’t really spotless, because on August 21st, a very tiny plage area looked like it was going to become a countable sunspot.
But according to solar physicist Leif Svalgaard, who regularly frequents this blog:
It has also been over a month since a countable sunspot has been observed, the last one being on July 18th. Since then, activity has been flat. Below is a graph of several solar metrics from the amateur radio propagation website dxlc.com for the past two months:
Click image for original source
They have a table of metrics that include sunspots, and their data also points to a spotless August 2008. See it here: http://www.dxlc.com/solar/indices.html
So unless something dramatic happens on the sun in the next 24 hours, it seems a safe bet that August 2008 will be a spotless month.
Update: As commenter Jim Powell points out,
30 08 2008
Many people that have have an interest in the interaction between the Sun and Earth have been keeping a watchful eye on several metrics of solar activity recently. The most popular of course has been sunspot watching.
The sun has been particularly quiet in the last several months, so quiet in fact that Australia’s space weather agency recently revised their solar cycle 24 forecast, pushing the expected date for a ramping up of cycle 24 sunspots into the future by six months.
On August 31st, at 23:59 UTC, just a little over 24 hours from now, we are very likely to make a bit of history. It looks like we will have gone an entire calendar month without a sunspot. According to data from NOAA’s National Geophysical Data Center, the last time that happened was in June of 1913. May of 1913 was also spotless.
With the current space weather activity level of the Sun being near zero, and the SOHO holographic imaging of the far side of the sun showing no developing spots that would come around the edge in the next 24 hours, it seems a safe bet to conclude that August 2008 will be the first spotless month since June 1913.
Some people who watch the sun regularly might argue that August wasn’t really spotless, because on August 21st, a very tiny plage area looked like it was going to become a countable sunspot.
But according to solar physicist Leif Svalgaard, who regularly frequents this blog:
According to NOAA it was not assigned a number on Aug.21st nor on Aug.22.
So without an official recognition or a number assigned, it should not be counted in August as actual sunspot.It has also been over a month since a countable sunspot has been observed, the last one being on July 18th. Since then, activity has been flat. Below is a graph of several solar metrics from the amateur radio propagation website dxlc.com for the past two months:
Click image for original source
They have a table of metrics that include sunspots, and their data also points to a spotless August 2008. See it here: http://www.dxlc.com/solar/indices.html
So unless something dramatic happens on the sun in the next 24 hours, it seems a safe bet that August 2008 will be a spotless month.
Update: As commenter Jim Powell points out,
There was a stretch of 42 spotless days from 9/13/1996 to 10/24/1996. Today we have equaled this period. Check out Jan Janssens spotless days page http://users.telenet.be/j.janssens/Spotless/Spotless.html.
NOAA counts sunspeck after all…Sun DOES NOT have first spotless calendar month since June 1913
31 08 2008
UPDATE:
After going days without counting the August 21/22 “sunspeck” NOAA and SIDC Brussels say NOT a spotless month!
They officially counted that sunspeck, after all. It only took them a week to figure out if they were going to count it or not, since no number was assigned originally.
But there appears to be an error in the data from the one station that reported a spot, Catania, Italy. None other stations monitoring that day did not report a spot. Catania reports a spot in the southern hemisphere that day, but there was not one seen by anyone else.
Inquires have been sent, stay tuned.
31 08 2008
UPDATE:
After going days without counting the August 21/22 “sunspeck” NOAA and SIDC Brussels say NOT a spotless month!
They officially counted that sunspeck, after all. It only took them a week to figure out if they were going to count it or not, since no number was assigned originally.
But there appears to be an error in the data from the one station that reported a spot, Catania, Italy. None other stations monitoring that day did not report a spot. Catania reports a spot in the southern hemisphere that day, but there was not one seen by anyone else.
Inquires have been sent, stay tuned.
Ominous.
Sept. 18, 2008
Dwayne Brown
Headquarters, Washington
202-358-1726
dwayne.c.brown@nasa.gov
DC Agle
Jet Propulsion Laboratory, Pasadena, Calif.
818-393-9011
agle@jpl.nasa.gov
MEDIA ADVISORY: M08-176
NASA TO DISCUSS CONDITIONS ON AND SURROUNDING THE SUN
WASHINGTON -- NASA will hold a media teleconference Tuesday, Sept. 23,
at 12:30 p.m. EDT, to discuss data from the joint NASA and European
Space Agency Ulysses mission that reveals the sun's solar wind is at
a 50-year low. The sun's current state could result in changing
conditions in the solar system.
Ulysses was the first mission to survey the space environment above
and below the poles of the sun. The reams of data Ulysses returned
have changed forever the way scientists view our star and its
effects. The venerable spacecraft has lasted more than 17 years -
almost four times its expected mission lifetime.
The panelists are:
-- Ed Smith, NASA Ulysses project scientist and magnetic field
instrument investigator, Jet Propulsion Laboratory, Pasadena, Calif.
-- Dave McComas, Ulysses solar wind instrument principal investigator,
Southwest Research Institute, San Antonio
-- Karine Issautier, Ulysses radio wave lead investigator,
Observatoire de Paris, Meudon, France
-- Nancy Crooker, Research Professor, Boston University, Boston, Mass.
Reporters should call 866-617-1526 and use the pass code "sun" to
participate in the teleconference. International media should call
1-210-795-0624.
To access visuals that will the accompany presentations, go to:
http://www.nasa.gov/topics/solarsystem/features/ulysses-20080923.html
Audio of the teleconference will be streamed live at:
http://www.nasa.gov/newsaudio
Sept. 18, 2008
Dwayne Brown
Headquarters, Washington
202-358-1726
dwayne.c.brown@nasa.gov
DC Agle
Jet Propulsion Laboratory, Pasadena, Calif.
818-393-9011
agle@jpl.nasa.gov
MEDIA ADVISORY: M08-176
NASA TO DISCUSS CONDITIONS ON AND SURROUNDING THE SUN
WASHINGTON -- NASA will hold a media teleconference Tuesday, Sept. 23,
at 12:30 p.m. EDT, to discuss data from the joint NASA and European
Space Agency Ulysses mission that reveals the sun's solar wind is at
a 50-year low. The sun's current state could result in changing
conditions in the solar system.
Ulysses was the first mission to survey the space environment above
and below the poles of the sun. The reams of data Ulysses returned
have changed forever the way scientists view our star and its
effects. The venerable spacecraft has lasted more than 17 years -
almost four times its expected mission lifetime.
The panelists are:
-- Ed Smith, NASA Ulysses project scientist and magnetic field
instrument investigator, Jet Propulsion Laboratory, Pasadena, Calif.
-- Dave McComas, Ulysses solar wind instrument principal investigator,
Southwest Research Institute, San Antonio
-- Karine Issautier, Ulysses radio wave lead investigator,
Observatoire de Paris, Meudon, France
-- Nancy Crooker, Research Professor, Boston University, Boston, Mass.
Reporters should call 866-617-1526 and use the pass code "sun" to
participate in the teleconference. International media should call
1-210-795-0624.
To access visuals that will the accompany presentations, go to:
http://www.nasa.gov/topics/solarsystem/features/ulysses-20080923.html
Audio of the teleconference will be streamed live at:
http://www.nasa.gov/newsaudio
There's a spot. If you don't believe me check my avatar or go to http://sohowww.nascom.nasa.gov/data/realtime/mdi_igr/512/.
Spotless Sun: Blankest Year of the Space Age
09.30.2008
[FONT=Verdana, Arial, Helvetica, sans-serif]As of Sept. 27, 2008, the sun had been blank, i.e., had no visible sunspots, on 200 days of the year. To find a year with more blank suns, you have to go back to 1954, three years before the launch of Sputnik, when the sun was blank 241 times.[/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]"Sunspot counts are at a 50-year low," says solar physicist David Hathaway of the NASA Marshall Space Flight Center. "We're experiencing a deep minimum of the solar cycle." [/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]A spotless day looks like this:[/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]Hathaway cautions that this development may sound more exciting than it actually is: "While the solar minimum of 2008 is shaping up to be the deepest of the Space Age, it is still unremarkable compared to the long and deep solar minima of the late 19th and early 20th centuries." Those earlier minima routinely racked up 200 to 300 spotless days per year.[/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]Some solar physicists are welcoming the lull.[/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]"This gives us a chance to study the sun without the complications of sunspots," says Dean Pesnell of the Goddard Space Flight Center. "Right now we have the best instrumentation in history looking at the sun. There is a whole fleet of spacecraft devoted to solar physics--SOHO, Hinode, ACE, STEREO and others. We're bound to learn new things during this long solar minimum."[/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]As an example he offers helioseismology: "By monitoring the sun's vibrating surface, helioseismologists can probe the stellar interior in much the same way geologists use earthquakes to probe inside Earth. With sunspots out of the way, we gain a better view of the sun's subsurface winds and inner magnetic dynamo."[/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]"There is also the matter of solar irradiance," adds Pesnell. "Researchers are now seeing the dimmest sun in their records. The change is small, just a fraction of a percent, but significant. Questions about effects on climate are natural if the sun continues to dim."[/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]Pesnell is NASA's project scientist for the Solar Dynamics Observatory (SDO), a new spacecraft equipped to study both solar irradiance and helioseismic waves. Construction of SDO is complete, he says, and it has passed pre-launch vibration and thermal testing. "We are ready to launch! Solar minimum is a great time to go."[/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]Coinciding with the string of blank suns is a 50-year record low in solar wind pressure, a recent discovery of the Ulysses spacecraft. (See the Science@NASA story Solar Wind Loses Pressure.) The pressure drop began years before the current minimum, so it is unclear how the two phenomena are connected, if at all. This is another mystery for SDO and the others.[/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]Who knew the blank sun could be so interesting? More to come... [/FONT]
09.30.2008
[FONT=Arial, Helvetica, sans-serif][/FONT]
[FONT=Arial, Helvetica, sans-serif][/FONT][FONT=Arial, Helvetica, sans-serif][/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]Sept. 30, 2008: Astronomers who count sunspots have announced that 2008 is now the "blankest year" of the Space Age.[/FONT][FONT=Verdana, Arial, Helvetica, sans-serif]As of Sept. 27, 2008, the sun had been blank, i.e., had no visible sunspots, on 200 days of the year. To find a year with more blank suns, you have to go back to 1954, three years before the launch of Sputnik, when the sun was blank 241 times.[/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]"Sunspot counts are at a 50-year low," says solar physicist David Hathaway of the NASA Marshall Space Flight Center. "We're experiencing a deep minimum of the solar cycle." [/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]A spotless day looks like this:[/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]The image, taken by the Solar and Heliospheric Observatory (SOHO) on Sept. 27, 2008, shows a solar disk completely unmarked by sunspots. For comparison, a SOHO image taken seven years earlier on Sept. 27, 2001, is peppered with colossal sunspots, all crackling with solar flares: image. The difference is the phase of the 11-year solar cycle. 2001 was a year of solar maximum, with lots of sunspots, solar flares and geomagnetic storms. 2008 is at the cycle's opposite extreme, solar minimum, a quiet time on the sun.[/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]And it is a very quiet time. If solar activity continues as low as it has been, 2008 could rack up a whopping 290 spotless days by the end of December, making it a century-level year in terms of spotlessness.[/FONT][FONT=Verdana, Arial, Helvetica, sans-serif]Hathaway cautions that this development may sound more exciting than it actually is: "While the solar minimum of 2008 is shaping up to be the deepest of the Space Age, it is still unremarkable compared to the long and deep solar minima of the late 19th and early 20th centuries." Those earlier minima routinely racked up 200 to 300 spotless days per year.[/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]
[/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]Above: A histogram showing the blankest years of the last half-century. The vertical axis is a count of spotless days in each year. The bar for 2008, which was updated on Sept. 27th, is still growing. [Larger images: 50 years, 100 years][/FONT]
[/FONT][FONT=Verdana, Arial, Helvetica, sans-serif]Some solar physicists are welcoming the lull.[/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]"This gives us a chance to study the sun without the complications of sunspots," says Dean Pesnell of the Goddard Space Flight Center. "Right now we have the best instrumentation in history looking at the sun. There is a whole fleet of spacecraft devoted to solar physics--SOHO, Hinode, ACE, STEREO and others. We're bound to learn new things during this long solar minimum."[/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]As an example he offers helioseismology: "By monitoring the sun's vibrating surface, helioseismologists can probe the stellar interior in much the same way geologists use earthquakes to probe inside Earth. With sunspots out of the way, we gain a better view of the sun's subsurface winds and inner magnetic dynamo."[/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]"There is also the matter of solar irradiance," adds Pesnell. "Researchers are now seeing the dimmest sun in their records. The change is small, just a fraction of a percent, but significant. Questions about effects on climate are natural if the sun continues to dim."[/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]Pesnell is NASA's project scientist for the Solar Dynamics Observatory (SDO), a new spacecraft equipped to study both solar irradiance and helioseismic waves. Construction of SDO is complete, he says, and it has passed pre-launch vibration and thermal testing. "We are ready to launch! Solar minimum is a great time to go."[/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]Coinciding with the string of blank suns is a 50-year record low in solar wind pressure, a recent discovery of the Ulysses spacecraft. (See the Science@NASA story Solar Wind Loses Pressure.) The pressure drop began years before the current minimum, so it is unclear how the two phenomena are connected, if at all. This is another mystery for SDO and the others.[/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]Who knew the blank sun could be so interesting? More to come... [/FONT]
Dec 31, 2008
2008 Ends Spotless and with 266 Spotless Days, the #2 Least Active Year Since 1900, Portends Cooling
By Joseph D’Aleo CCM, AMS Fellow
2008 will be coming to a close with yet another spotless days according to the latest solar image.
This will bring the total number of sunspotless days this month to 28 and for the year to 266, clearly enough to make 2008, the second least active solar year since 1900.
See larger image here.
The total number of spotless days this solar minimum is now at around 510 days since the last maximum. The earliest the minimum of the sunspot cycles can be is July 2008, which would make the cycle length 12 years 3 months, longest since cycle 9 in 1848. If the sun stays quiet for a few more months we will rival the early 1800s, the Dalton Minimum which fits with the 213 year cycle which begin with the solar minimum in the late 1790s.
See larger image here.
Long cycles are cold and short ones like the ones in the 1980s and 1990s are warm as this analysis by Friis-Christensen in 1991 showed clearly.
See larger image here.
In reply to the arguments made that the temperatures after 1990 no longer agreed with solar length, I point out that it was around 1990 when a major global station dropout (many rural) began which led to an exaggeration of the warming in the global temperature data bases. Also the length from max to max of 21 to 22 was 9.7 years and cycle 22 length min to min 9.8 years, both very short suggesting warm temperatures in the 1990s. The interval of cycle 22 max to cycle 23 max centered in the mid 1990s began to increase at 10.7 years and the min to min length of cycle 23 is now at least 12.3 years.
With the Wigley suggested lag of sun to temperatures of 5 years and Landscheidt suggested 8 years, a leveling off should have been favored around 2000-2003 and cooling should be showing up now. Looking ahead, put that together with the flip of the PDO in the Pacific to cold and you have alarming signals that this cooling of the last 7 years will continue and accelerate.
2008 Ends Spotless and with 266 Spotless Days, the #2 Least Active Year Since 1900, Portends Cooling
By Joseph D’Aleo CCM, AMS Fellow
2008 will be coming to a close with yet another spotless days according to the latest solar image.
This will bring the total number of sunspotless days this month to 28 and for the year to 266, clearly enough to make 2008, the second least active solar year since 1900.
See larger image here.
The total number of spotless days this solar minimum is now at around 510 days since the last maximum. The earliest the minimum of the sunspot cycles can be is July 2008, which would make the cycle length 12 years 3 months, longest since cycle 9 in 1848. If the sun stays quiet for a few more months we will rival the early 1800s, the Dalton Minimum which fits with the 213 year cycle which begin with the solar minimum in the late 1790s.
See larger image here.
Long cycles are cold and short ones like the ones in the 1980s and 1990s are warm as this analysis by Friis-Christensen in 1991 showed clearly.
See larger image here.
In reply to the arguments made that the temperatures after 1990 no longer agreed with solar length, I point out that it was around 1990 when a major global station dropout (many rural) began which led to an exaggeration of the warming in the global temperature data bases. Also the length from max to max of 21 to 22 was 9.7 years and cycle 22 length min to min 9.8 years, both very short suggesting warm temperatures in the 1990s. The interval of cycle 22 max to cycle 23 max centered in the mid 1990s began to increase at 10.7 years and the min to min length of cycle 23 is now at least 12.3 years.
With the Wigley suggested lag of sun to temperatures of 5 years and Landscheidt suggested 8 years, a leveling off should have been favored around 2000-2003 and cooling should be showing up now. Looking ahead, put that together with the flip of the PDO in the Pacific to cold and you have alarming signals that this cooling of the last 7 years will continue and accelerate.
Wow, if true.
Some speculation that solar cycle 25 has already begun
1 08 2009
Leif Svalgaard writes:
Some speculation that solar cycle 25 has already begun:
http://xrt.cfa.harvard.edu/resources/pubs/savc0707.pdf
From a 2006 NASA News article - In red, David Hathaway's predictions for the next two solar cycles and, in pink, Mausumi Dikpati's prediction for cycle 24, and the expected "low" cycle 25.
Graph source: NASA News
This would be stunning, because it suggests that the sun has skipped a solar cycle (#24) . Researchers, three from the Harvard-Smithsonian Center for Astrophysics and the other from Marshall Space Flight Center-NASA, have published a paper that suggests this possibility.
Does a polar coronal hole’s flux emergence follow a Hale-like law?
A. Savcheva1, J.W. Cirtain2, E.E. DeLuca1, L. Golub1
ABSTRACT
Recent increases in spatial and temporal resolution for solar telescopes sensitive to EUV and X-ray radiation have revealed the prevalence of transient jet events in polar coronal holes. Using data collected by the X-Ray Telescope on Hinode, Savcheva et al. (2007) confirmed the observation, made first by the Soft X-ray Telescope on Yohkoh, that some jets exhibit a motion transverse to the jet outflow direction.
The velocity of this transverse motion is, on average, 20 kms−1. The direction of the transverse motion, in combination with the standard reconnection model for jet production (e.g. Shibata et al. 1992), reflects the magnetic polarity orientation of the ephemeral active region at the base of the jet. From this signature, we find that during the present minimum phase of the solar cycle the jet-base ephemeral active regions in the polar coronal holes had a preferred east-west direction, and that this direction reversed during the cycle’s progression through minimum.
In late 2006 and early 2007, the preferred direction was that of the active regions of the coming sunspot cycle (Cycle 24), but in late 2008 and early 2009 the preferred direction has been that of the active regions of sunspot cycle 25. These findings are consistent with the results of Wilson et al. (1988) that there is a high latitude expansion of the solar activity
cycle.
Full paper here:
http://xrt.cfa.harvard.edu/resources/pubs/savc0707.pdf
Some speculation that solar cycle 25 has already begun
1 08 2009
Leif Svalgaard writes:
Some speculation that solar cycle 25 has already begun:
http://xrt.cfa.harvard.edu/resources/pubs/savc0707.pdf
Graph source: NASA News
This would be stunning, because it suggests that the sun has skipped a solar cycle (#24) . Researchers, three from the Harvard-Smithsonian Center for Astrophysics and the other from Marshall Space Flight Center-NASA, have published a paper that suggests this possibility.
Does a polar coronal hole’s flux emergence follow a Hale-like law?
A. Savcheva1, J.W. Cirtain2, E.E. DeLuca1, L. Golub1
ABSTRACT
Recent increases in spatial and temporal resolution for solar telescopes sensitive to EUV and X-ray radiation have revealed the prevalence of transient jet events in polar coronal holes. Using data collected by the X-Ray Telescope on Hinode, Savcheva et al. (2007) confirmed the observation, made first by the Soft X-ray Telescope on Yohkoh, that some jets exhibit a motion transverse to the jet outflow direction.
The velocity of this transverse motion is, on average, 20 kms−1. The direction of the transverse motion, in combination with the standard reconnection model for jet production (e.g. Shibata et al. 1992), reflects the magnetic polarity orientation of the ephemeral active region at the base of the jet. From this signature, we find that during the present minimum phase of the solar cycle the jet-base ephemeral active regions in the polar coronal holes had a preferred east-west direction, and that this direction reversed during the cycle’s progression through minimum.
In late 2006 and early 2007, the preferred direction was that of the active regions of the coming sunspot cycle (Cycle 24), but in late 2008 and early 2009 the preferred direction has been that of the active regions of sunspot cycle 25. These findings are consistent with the results of Wilson et al. (1988) that there is a high latitude expansion of the solar activity
cycle.
Full paper here:
http://xrt.cfa.harvard.edu/resources/pubs/savc0707.pdf
50 Days Blank http://www.solarcycle24.com/rss/feed.xml
08/29/2009 by Kevin VE3EN at 22:45
The sun has been blank of official sunspots for 50 days in a row. This is only the 4th time the sun has been blank for atleast 50 days since 1849. The 3rd longest streak on the list is 54 days between February-April 1879. The record is 92 days in 1913. We still have a while to go before we beat the record. Click the link below for all of the spotless day streak records. http://users.telenet.be/j.janssens/Spotless/Spotless.html
From: SOLARCYCLE 24.com
08/29/2009 by Kevin VE3EN at 22:45
The sun has been blank of official sunspots for 50 days in a row. This is only the 4th time the sun has been blank for atleast 50 days since 1849. The 3rd longest streak on the list is 54 days between February-April 1879. The record is 92 days in 1913. We still have a while to go before we beat the record. Click the link below for all of the spotless day streak records. http://users.telenet.be/j.janssens/Spotless/Spotless.html
From: SOLARCYCLE 24.com
Yup, pretty darned cold... Since Walter loves the day to day weather as an indicator... I'll go one better and give him monthly data, and back-to-back. This must mean the oceans will be boiling in the tropics very soon, according to the trends!:lol:
Ocean temperatures:
Warmest June on record
Warmest July on record
And all that with nary a Sunspot in sight. Hmmmm.
December 08, 2009
Why worry about the lack of sunspots - increased clouds!
Why should we worry about the lack of sun spots and declining Ap Index? The lack of sunspots has been associated with long periods of extreme cold on this planet. This cold had major impacts on agriculture and the ability of humans to feed large populations.
There seem to be an connection between sunspots and cloud cover. Less cloud cover and more of the sun's radiation reaches the earth. The more cloud cover the more that radiation is reflected back into space. A presentation by Jasper Kirkby, CLOUD Spokesperson, CERN, shows what we currently know about the correlations between Cosmic Rays and variations in the climate.
The CLOUD experiment uses a cloud chamber to study the possible link between galactic cosmic rays and cloud formation. Kirkby talks about the results from the first CLOUD experiment and the new CLOUD experiment and what it will deliver on the intrinsic connection between Cosmic Rays and cloud formation.
Kirkby's one hour presentation is hosted at Seeking Alpha. Get your coffee, coke or cocktail, or what ever helps you think and learn about the cosmic ray and cloud connection. Seeking Alpha Link.
Why worry about the lack of sunspots - increased clouds!
Why should we worry about the lack of sun spots and declining Ap Index? The lack of sunspots has been associated with long periods of extreme cold on this planet. This cold had major impacts on agriculture and the ability of humans to feed large populations.
There seem to be an connection between sunspots and cloud cover. Less cloud cover and more of the sun's radiation reaches the earth. The more cloud cover the more that radiation is reflected back into space. A presentation by Jasper Kirkby, CLOUD Spokesperson, CERN, shows what we currently know about the correlations between Cosmic Rays and variations in the climate.
The CLOUD experiment uses a cloud chamber to study the possible link between galactic cosmic rays and cloud formation. Kirkby talks about the results from the first CLOUD experiment and the new CLOUD experiment and what it will deliver on the intrinsic connection between Cosmic Rays and cloud formation.
Kirkby's one hour presentation is hosted at Seeking Alpha. Get your coffee, coke or cocktail, or what ever helps you think and learn about the cosmic ray and cloud connection. Seeking Alpha Link.