Monday, September 28, 2015

The rate of change in tidal stresses caused by lunar tides in the Earth's atmosphere and the QBO

IMPORTANT SUMMARY:

a)  the rate of change in the stresses caused by lunar tides in the Earth's atmosphere and oceans, as a result of a change in the strength of the lunar tidal forces, should reach a maximum every 0.563714 tropical years (= 205.89223 days = 0.5 FMCs) and 10.14686 topical years (= 9.0 FMC's). [Note: the longer time period is the more precise alignment of the two and FMC = Full Moon Cycles]

b)  the rate of change in the stresses caused by lunar tides in the Earth's atmosphere and oceans, as a result of a change in the direction of the lunar tidal forces, should reach a maximum every 1.89803 tropical years (= 2.0 Draconic year).

Now if the period of the rate of change in stresses caused by the change in strength of the lunar tides (i.e. 10.14686 tropical years) amplitude modulates the period for the rate of changes in stresses caused by the change in direction of the lunar tides (i.e. 1.89803 tropical years), you would expect that the 1.89803 year tidal forcing term would split into two spectral peaks i.e. a positive and a negative side-lobe, such that:

Positive side-lobe
[10.1469 x 1.89803] / [10.1469 – 1.89803] = 2.334(7) tropical yrs = 28.0 months

Negative side-lobe
[10.1469 x 1.89803] / [10.1469 + 1.89803] = 1.598(9) tropical yrs 

Interestingly, the time period of the positive side-lobe is almost exactly the same as that of the Quasi-Biennial Oscillation (QBO). The QBO is a quasi-periodic oscillation in the equatorial stratospheric zonal winds that has an average period of oscillation of 28 months, although it can vary between 24 and 30 months (Giorgetta and Doege 2004). Of even more interest is the 1.589(9) tropical year negative side-lobe period, which just happens to be synodic period of Venus and the Earth = 583.92063 days = 1.5987 years, to within an error of ~ 1.8 hours). 

REWRITTEN BLOG POST - UPDATED: 05/10/2015

1. The rate of change of the Moon's tidal stresses upon the Earth's atmosphere and oceans - When is it maximized? 


      The stresses caused by lunar tides in the Earth's atmosphere and oceans should be a maximum when the tidal forces of the Moon acting upon the Earth change by the largest amount in either strength or direction over a relative short period in time.

     There are two such conditions where this takes place:

a) Changes in lunar tidal strength.

When a new/full moon occurs at or near the times when the lunar line-of-apse (see figure 1) is pointing towards the Sun. This is true because a new/full moon at closest perigee produces the strongest lunar tidal forces upon the Earth while a new/full moon at apogee produces the weakest lunar tidal forces upon the Earth (see figure 2). Thus, when the new/full moon takes place very close to perigee it will be followed roughly 14 days later by a full/new moon not far from apogee. Similarly, when the new/full moon takes place very close to apogee it will be followed roughly 14 days later by a full/new moon not far from perigee.

Figure 1.

Figure 2.


A time when a new moon exerts maximal tidal forces upon
the Earth because of its distance from Earth (i..e it is at closest
perigee). Approximately 14 days later, a full moon will exert 
minimal tidal forces upon the Earth because of its distance (i.e. 
it is at apogee). 

b) Changes in lunar tidal direction

We are looking for the times when the stresses caused by lunar tides in the Earth's atmosphere and oceans will be a maximum because the direction of the tidal forces of the Moon acting upon the Earth are changing by the largest amount over a relative short period in time.

When a new/full moon occurs at or near the time when the lunar line-of-nodes is at a right angle to the Earth-Sun line (see figure 3 and 4). This is true because a new/full moon at a major lunar standstill produces the largest changes in the meridional (north-south) lunar tidal forces upon the Earth (see figure 4).
  
Hence, when the new/full moon takes place very close to a time when the lunar line-of nodes is at a right angle to the Earth-Sun line (i.e. the new/full moon is at a major lunar standstill) it will be located at a declination of roughly 28 degrees in one hemisphere, followed roughly 14 days later by a full/new moon located at a declination of roughly 28 degrees in the other hemisphere.

Figure 3.














Figure 4.
   
This file is available under Creative Commons CC0 1.0 Universal Public Domain Dedication

     Hence, the maximal rate of change in the strength of the lunar tidal forces acting upon the Earth should vary with a period set by the minimum time required for the lunar line-of-apse to realign with the Sun, at the same time as a new/full moon is taking place.  


     In addition, the maximum rate of change in the direction of the lunar tidal forces acting upon the Earth should vary with a period set by the minimum time required for the perpendicular to the the lunar line-of-nodes to re-align with the Earth-Sun line, at the same time as a new/full moon is taking place.


2. Minimum Realignment Times for the Lunar Line-of-Apse

Starting out with a new moon at perigee with the Perigee end of lunar line-of-nodes pointing at the Sun (see figure 5).

Figure 5




The time required for the Perigean end of the lunar line-of-apse to point back at the Sun close to New Moon is (see figure 6):

1.0 Full Moon Cycle = 1.0 FMC = 411.78445 days = 1.1274 tropical years    (1)

The Moon almost returns to being New at perigee after 1.0 FMC because 14 Synodic months = 413.42824 days and 15 anomalistic months = 413.31825 days.

[NB: There is a slight miss-match of 0.110 days between these two alignments which means that the new Moon occurs ~ 1.3 degrees away from actual lunar perigee.]

Figure 6.

























This means that minimum time required for the lunar line-of-apse to realign with the Sun when there is new/full moon is (see figure 7):

0.5 FMC = 205.89222(5) days = 0.56371(4) tropical years                          (2)

The Moon almost returns to being New at apogee after 0.5 FMC because 7 Synodic months = 206.714122 days and 7.5 Anomalistic months = 206.659125 days. [NB: producing an error of ~ 0.8 days between 7 Synodic months and the length of 0.5 FMC.] 

Figure 7.














The next shortest time required for the lunar line-of-apse to re-align with the Sun when there is a new/full moon (in this case a Full Moon) is at: 

9.0 FMC = 3,706.06005 days = 10.1468(6) tropical years                            (3) 

The Moon almost returns to Full Moon at apogee after this period because 125.5 synodic months = 3706.08891 days and 134.5 anomalistic months = 3706.08698 days. Note that there is a mismatch of only 0.029 days between 125.5 Synodic months and 9.0 FMC which means that this realignment period is about four times more precise than that at 0.5 FMC realignment period.   

3. Minimum Realignment Times for the Perpendicular to the Lunar Line-of-Nodes

Starting out with a New Moon at a major lunar standstill (i.e. the line-of-nodes is at right angles to the Earth-Sun direction).

Figure 8.














The lunar line-of-nodes return to being perpendicular to the Earth-Sun direction after 0.5 Draconic Year (DY), where:

0.5 DY = 173.310038 days = 0.47450(7) tropical years                                  (4)

[NOTE: 1.0 Draconic Year (DY) = 346.620076 days = 0.94901(4) tropical years]


Figure 9,














Unfortunately, 173.310038 days is 5.869 Synodic months and 6.369 Draconic months and so the Moon phase is not new or full. 

It turns out that the minimum time required for the Moon to return to a major standstill (i.e. the time required for the perpendicular to the lunar line-of-nodes to realign with the Sun), when there is a new/full moon is:

2.0 DY = 4 x 0.5 DY = 693.24015(2) days = 1.8980(3) tropical years           (5)


The Moon almost returns to being Full after 2.0 DY because 23.5 Synodic months = 693.96884 days and 25.5 Draconic months = 693.91161 days. [NB: producing an error of ~ 0.73 days between the 23.5 Synodic months and 2.0 DY.]


The 1.89803 tropical year period is part of the 19.0 year Metonic Cycle with the Moon's phase returning to new moon at a node after 3.79606 tropical yrs = 1387.481264 days (since 47 Synodic months = 1387.937678 days and 51 Draconic months = 1387.82322 days). With this cycle, the synodic lunar cycle realigns with the seasonal calendar every 4 tropical years, 4 + 4 = 8 tropical years, 4 + 4 + 3 = 11 tropical years, 4 + 4 + 3 + 4 = 15 tropical years and 4 + 4 + 3 + 4 + 4 = 19.0 tropical years. to give and average spacing of roughly (4 + 4 + 3 + 4 + 4)/5 = 3.8 years.

3. Discussion

     The above analysis tells us that:

a)  the rate of change in the stresses caused by lunar tides in the Earth's atmosphere and oceans, as a result of a change in the strength of the lunar tidal forces, should reach a maximum every 0.563714 tropical years (= 0.5 FMCs) and 10.14686 topical years (= 9.0 FMC's). [Note: the longer time period
is the more precise alignment of the two.]

b)  the rate of change in the stresses caused by lunar tides in the Earth's atmosphere and oceans, as a result of a change in the direction of the lunar tidal forces, should reach a maximum every 1.89803 tropical years (= 2.0 DYs).

Now if the period of the rate of change in stresses caused by the change in strength of the lunar tides (i.e. 10.14686 tropical years) amplitude modulates the period of the rate of changes in stresses caused by the change in direction of the lunar tides (i.e. 1.89803 tropical years), you would expect that the 1.89803 year tidal forcing term would split into a positive and a negative side-lobe, such that:

Positive side-lobe
[10.1469 x 1.89803] / [10.1469 – 1.89803] = 2.334(7) tropical yrs = 28.0 months

Negative side-lobe
[10.1469 x 1.89803] / [10.1469 + 1.89803] = 1.598(9) tropical yrs 

Interestingly, the time period of the positive side-lobe is almost exactly the same as that of the Quasi-Biennial Oscillation (QBO). The QBO is a quasi-periodic oscillation in the equatorial stratospheric zonal winds that has an average period of oscillation of 28 months, although it can vary between 24 and 30 months (Giorgetta and Doege 2004).

Even more interesting, is the 1.589(9) tropical year negative side-lobe period, which just happens to be synodic period of Venus and the Earth = 583.92063 days = 1.5987 tropical years, to within an error of ~ 1.8 hours). 

###################################

[NB: The lunar and planetary periods used in this post are:

Synodic month = 29.5305889 days
Anomalistic month = 27.55455 days
Draconic month = 27.21222 days
Tropical Year = 365.242189 days
Sidereal orbital period of the Earth = 365.256363 days
Sidereal orbital period of Venus = 224.70069 days

Wednesday, September 16, 2015

Earth's pull is 'massaging' our moon

Many scientists deny that factors external to the Earth can have a significant impact upon the Earth's climate yet there is considerable evidence that this indeed the case. Their instincts tell them that they must always look for internal factors, and internal factors alone, to explain the Earth's climate systems. Most will admit that Moon might have some influence upon the Earth's climate through the dissipation of its tidal forces in the Earth's oceans but beyond that they have little time for thinking outside the box.

It is now emerging that those who reject the idea that factors external to the Earth can have a significant influence upon the Earth's climate are increasingly at odds with the evidence.

One quirky way to show that this is the case is to reverse the argument around. This can be done by asking the question: Is there any evidence to show that the Earth can have a significant influence upon the Moon and nearby planets? If this is indeed the case then would it be so hard to imagine that it might possible for the reverse to happen (in specific cases). 
One piece of evidence that shows that the Earth can have a significant impact upon external astronomical bodies is the gravitational interaction between the Earth and Venus. Every time the planet Venus passes between the Earth and Sun it presents the same face towards Earth. This happens because the slow retrograde rotation rate of the planet Venus (approximately 243 days) has allowed the Earth's gravity to nudge Venus's rotation period into a resonance lock with the Earth's orbital period.

We now have an addition piece of evidence to support the idea that the Earth can have a significant influence upon the Moon. Thomas et al. 2015 (1) report that imaging by the Lunar Reconnaissance Orbiter Camera (LROC) has revealed the presence of over 3,000 geological faults known as lobate scarps. Indeed, it has emerged that these globally distributed faults are the most common tectonic land form on the moon. 

Initially it was thought that the lobate scarp faults were created by the gradual shrinkage of the Moon's crust as it cooled. However, an analysis of the orientations of these small scarps has yielded a very surprising result. It shows that the orientation of the fault lines is being influenced by an unexpected source--gravitational tidal forces from Earth.

Smithsonian senior scientist Thomas Watters of the National Air and Space Museum in Washington
said that"There is a pattern in the orientations of the thousands of faults and it suggests something else is influencing their formation, something that's also acting on a global scale -- 'massaging' and realigning them." 

The other forces acting on the moon come not from its interior, but from Earth. These are tidal forces. When the tidal forces are superimposed on the global contraction, the combined stresses should cause predictable orientations of the fault scarps from region to region. "The agreement between the mapped fault orientations and the fault orientations predicted by the modeled tidal and contractional forces is pretty striking," says Watters.

The fault scarps are very young -- so young that they are likely still actively forming today. The team's modeling shows that the peak stresses are reached when the moon is farthest from Earth in its orbit (at apogee). If the faults are still active, the occurrence of shallow moonquakes related to slip events on the faults may be most frequent when the moon is at apogee. This hypothesis can be tested with a long-lived lunar seismic network.

NASA/Goddard Space Flight Center. "Earth's pull is 'massaging' our moon." ScienceDaily. ScienceDaily, 15 September 2015. 

The question now becomes, why is it so hard for scientists to admit that factors external to the Earth could have a significant impact upon the Earth's climate.
  1. Thomas R. Watters, Mark S. Robinson, Geoffrey C. Collins, Maria E. Banks, Katie Daud, Nathan R. Williams, Michelle M. Selvans. Global thrust faulting on the Moon and the influence of tidal stresses.Geology, 2015; 43 (10): 851 DOI: 10.1130/G37120.1

Tuesday, May 5, 2015

The six year re-alignment period between the lunar line-of-apse and line-of-nodes is set by the planets.


DT = the lunar Draconic year ________=  0.9490 sidereal yrs = 346.620076 days
DP = lunar nodal precession _________= 18.599 sidereal yrs 
AT = the lunar Full Moon Cycle______= 1.1274 sidereal yrs = 411.784430 days
AP= lunar apsidal precession________ = 8.851 sidereal yrs  
AD = alignment period of the lunar line-of-apse and the lunar line-of-nodes = 5.9971 sidereal yrs

where     1 -- 1/AT = 1/AP ,       1/DT -- 1 = 1/DPand  1/AD = 1/DP + 1/AP*** 

and

T= Sidereal orbital period of Jupiter __= 11.8622 sidereal yrs = 4332.75 days
SJS = Synodic period of Jupiter/Saturn  _= 19.859 sidereal yrs               
SVE = Synodic period of Venus/Earth__= 1.5987 sidereal yrs

It can be shown that the apsidal precession period of the lunar orbit is linked to the synodic periods of Venus/Earth and Jupiter/Saturn by the following relationship:


AP ≈ [SJS×10SVE] / [SJS + 10SVE] = 8.857 yrs

[with an error of 0.006 sidereal yrs = 2.2 days] 

and that the lunar nodal precession period is linked to the sidereal orbital period of Jupiter by:


5/4×DT = (1/10)×TJ**

See the following link:

Now this last equation can be rearranged using the relationships (*)  and (**to give: 


DP = TJ / [25/2  -- TJ] = 18.599 yrs


Hence, using the relationship (***), we can see that the six year re-alignment period between the lunar line-of-apse and the lunar line-of-nodes is synchronized with the synodic periods of Venus/Earth and Jupiter/Saturn and the orbital period of Jupiter.


Saturday, April 18, 2015

Will the PDO Turn Positive in the Next Few Years?

Glossary: PDO - Pacific Decadal Oscillation; LOD - Earth's Length of Day

Back in 2008, I wrote a paper entitled:

Wilson, I.R.G., 2011, Are Changes in the Earth’s Rotation Rate Externally Driven and Do They Affect Climate? The General Science Journal, Dec 2011, 3811. which can be freely down loaded at:

http://gsjournal.net/Science-Journals/Essays/View/3811

One of the results of this paper concerned the long-term changes in the Pacific Decadal Oscillation (PDO). It predicted that the PDO should return to its positive phase sometime around 2015 - 2017.

A.  The difference between the actual LOD and the nominal LOD value of 86400 seconds.

Page 11 - Figure 4


Figure 4: This figure shows the variation of the Earth's length-of-day (LOD) from 1656 to 2005 (Sidorenkov 2005)[blue curve]. The values shown in the graph are the difference between the actual LOD and the nominal LOD value of 86400 seconds, measured in units of  10^(-5) seconds. Superimposed on this graph are 1st and 3rd order polynomial fits to the change in the Earth's LOD.

B. The absolute deviation of the Earth's LOD from a 1st and 3rd order polynomial fit to the long-term changes in the LOD between 1656 and 2005

page 14 - Figure 7a


Figure 7a: Shows the absolute deviation of the Earth's LOD from a 1st and 3rd order polynomial fit to the long-term changes in the LOD (measured in units of 10^(-5) seconds). There are nine significant peaks in the absolute deviation which are centered on the years 1729, 1757, 1792, 1827, 1869, 1906, 1932, 1956 and 1972. 

C. A comparison between the peak (absolute) deviations of the LOD from its long-term trend and the years where the phase of the PDO [proxy] reconstruction is most positive.

Page 15 - Figure 8


Figure 8: The upper graph shows the PDO reconstruction of D’Arrigo et al. (2001) between 1707 and
1972. The reconstruction has been smoothed with a 15-year running mean filter to eliminate short-term fluctuations. Superimposed on this PDO reconstruction is the instrumental mean annual PDO index (Mantua 2007) which extends the PDO series up to the year 2000. The lower graph shows the absolute deviation of the Earth’s LOD from 1656 to 2005. The data in this figure has also been smoothed with a 15-year running mean filter.

A comparison between the upper and lower graph in figure 8 (above) shows that there is a
remarkable agreement between the years of the peak (absolute) deviations of the LOD from its
long-term trend and the years where the phase of the PDO [proxy] reconstruction is most positive. While the correlation is not perfect, it is convincing enough to conclude the PDO index is another good example of a climate system that is directly associated with changes in the Earth's rotation rate.

If you look closely at the peaks in the deviation of Earth's LOD from its long term trend and the peaks in the PDO index shown in figure 8, you will notice that the peaks in deviation of LOD take place 8 - 10 years earlier (on average) than the peaks in the PDO index, suggesting a causal link.


D. The path of the CM of the Solar System about the Sun in a reference frame that is rotating with the planet Jupiter


Page 17 - Figure 9


 Figure 9: Shows the Sun in a reference frame that is rotating with the planet Jupiter. The perspective is the one you would see if you were near the Sun’s pole. A unit circle is drawn on the left side of this figure to represent the Sun, using an x and y scales marked in solar radii. The position of the CM of the Solar System is also shown for the years 1780 to 1820 A.D. The path starts in the year 1780, with
each successive year being marked off on the curve, as you move in a clockwise direction. This
shows that the maximum asymmetry in the Sun’s motion occurred roughly around 1790-91.

The path of the CM of the Solar System about the Sun that is shown in figure 9 [above] mirrors the typical motion of the Sun about the CM of the Solar System. This motion is caused by the combined gravitational influences of Saturn, Neptune, and to a lesser extent Uranus, tugging on the Sun.

The motion of the CM shown in figure 9 repeats itself roughly once every 40 years. The timing and level of asymmetry of Sun’s motion is set, respectively, by when and how close the path approaches the point (0.95, 0.0), just to the left of the Sub-Jupiter point. Hence, we can quantify the magnitude and timing of the Sun’s asymmetric motion by measuring the distance of the CM from the point (0.95, 0.0).

E. The years where the Suns' motion about the CM of the Solar System is most asymmetric.

Page 18 - Figure 10


Figure 10: shows The distance of the centre-of-mass (CM) of the Solar System (in solar radii) from the point (0.95, 0.00) between 1650 and 2000 A.D. The distance scale is inverted so that top of the peaks correspond to the times when the Sun’s motion about the CM is most asymmetric.

An inspection of figure 10 shows that there are times between 1700 and 2000 A.D. where the CM of the Solar System approaches the point (0.095, 0.00) i.e. at the peaks of the blue curve in figure 10 where the Sun's motion about the CM is most asymmetric. These are centred on the years, 1724, 1753, 1791, 1827, 1869, 1901, 1932, and 1970. Remarkably, these are very close to the years in which the Earth’s LOD experienced its maximum deviation from its long-term trend i.e. the years 1729, 1757, 1792, 1827, 1869, 1906, 1932, 1956 and 1972.   

This raised the possibility that the times of maximum deviation of the Earth's LOD might be related to the times of maximum asymmetry in the Sun’s motion about the CM. 

In addition, if both of these indices precede transitions of the PDO into its positive phase by 8 - 10 years, then it could be possible to use the times of maximum asymmetry in the Sun’s motion about the CM to predict when the PDO will make its next transition into its positive phase.

F. When will the transition to the next positive phase of the PDO take place?




This figure shows the proxy PDO reconstruction of D’Arrigo et al. (2001) between 1707 and 1972 [blue curve]. The reconstruction has been smoothed with a 15-year running mean filter to eliminate short-term fluctuations. Superimposed on this PDO reconstruction is the instrumental mean annual PDO index (Mantua 2007) which extends the PDO series up to the year 2000 [green curve]. Also shown is the proximity of the CM of the Solar System to sub-Jupiter point which measures the asymmetry of the Sun's motion about the CM [orange curve].

Hence, like the long term deviation of the Earth's LOD from its long term trend, the peaks in asymmetry of the Sun's motion about the CM of the Solar System take place roughly 8 - 10 years prior to positive peaks in the PDO index. 

Careful inspection of the figure above shows that Sun's motion about the CM peaks in about 2007 which would indicate that the next transition to a positive PDO phase should take place some time around the years 2015 to 2017.

[Note: The above graph shows a prediction made on the assumption that forward shift between the two curves is of the order of the average length of the Hale sunspot cycle = 11 years. It probably a good indicator of the level of uncertainty of the prediction being made]. 


[Note: I propose that GEAR EFFECT is the underlying reason for the connection between peaks in the asymmetry of the Sun's motion about the Barycentre of the Solar System (SSBM) and the absolute deviation of the Earth rotation rate about it's long-term in crease of ~ 1.7 ms/century. A post describing the GEAR EFFECT can be found here:]

http://astroclimateconnection.blogspot.com.au/2013/09/the-gear-effect-vej-tidal-torquing.html

   

Wednesday, April 15, 2015

Scientific Publications and Presentations

UPDATED 16/04/2015

The following is a list of my recent scientific publications and presentations. I am placing the list on my blog so that others can have easy access.

2014

Wilson, I.R.G. Are the Strongest Lunar Perigean Spring Tides Commensurate with the Transit Cycle of Venus?,  Pattern Recogn. Phys., 2, 75-93

2013

Wilson, I.R.G.: The Venus–Earth–Jupiter spin–orbit coupling 
modelPattern Recogn. Phys., 1, 147-158

Wilson, I.R.G. and Sidorenkov, N.S., Long-Term Lunar Atmospheric Tides in the 
Southern Hemisphere, The Open Atmospheric Science Journal,
2013, 7, 51-76

http://benthamopen.com/contents/pdf/TOASCJ/TOASCJ-7-51.pdf


Wilson, I.R.G., 2013, Are Global Mean Temperatures 
Significantly Affected by Long-Term Lunar Atmospheric 
Tides? Energy & Environment, Vol 24,
No. 3 & 4, pp. 497 - 508


Wilson, I.R.G., 2013, Personal Submission to the Senate 
Committee on Recent Trends in and Preparedness for 
Extreme Weather Events, Submission No. 106


2012

Wilson, I.R.G.Lunar Tides and the Long-Term Variation 
of the Peak Latitude Anomaly of the Summer Sub-Tropical 
High Pressure Ridge over Eastern Australia
The Open Atmospheric Science Journal, 2012, 6, 49-60

Wilson, I.R.G., Changes in the Earth's Rotation in relation 
to the Barycenter and climatic effect.  Recent Global Changes 
of the Natural Environment. Vol. 3, Factors of Recent 
Global Changes. – M.: Scientific World, 2012. – 78 p. [In Russian].

This paper is the Russian translation of my 2011 paper
Are Changes in the Earth’s Rotation Rate Externally 
Driven and Do They Affect Climate? 
The General Science Journal, Dec 2011, 3811.

2011

Wilson, I.R.G., 2011, Are Changes in the Earth’s Rotation 
Rate Externally Driven and Do They Affect Climate? 
The General Science Journal, Dec 2011, 3811.



Wilson, I.R.G., 2011, Do Periodic peaks in the Planetary Tidal 
Forces Acting Upon the Sun Influence the Sunspot Cycle? 
The General Science Journal, Dec 2011, 3812.


[Note: This paper was actually written by October-November 2007 and submitted to the New Astronomy (peer-reviewed) Journal in early 2008 where it was rejected for publication. It was resubmitted to the (peer-reviewed) PASP Journal in 2009 where it was again rejected. The paper was eventually published in the (non-peer reviewed) General Science Journal in 2010.]

2010

N. Sidorenkov, I.R.G. Wilson and A.I. Kchlystov, 2009, The 
decadal variations in the geophysical processes and the 
asymmetries in the solar motion about the barycentre. 
Geophysical Research Abstracts Vol. 12, EGU2010-9559, 
2010. EGU General Assembly 2010 © Author(s) 2010


2009


Wilson, Ian R.G., 2009, Can We Predict the Next Indian 
Mega-Famine?, Energy and Environment, Vol 20, 
Numbers 1-2, pp. 11-24.

El Ninos and Extreme Proxigean Spring Tides

A lecture by Ian Wilson at the Natural Climate Change
Symposium in Melbourne on June 17th 2009.
2008

Wilson, I.R.G., Carter, B.D., and Waite, I.A., 2008
Does a Spin-Orbit Coupling Between the Sun and the 
Jovian Planets Govern the Solar Cycle?,
Publications of the Astronomical Society of Australia
2008, 25, 85 – 93.

  
N.S. Sidorenkov, Ian WilsonThe decadal fluctuations 
in the Earth’s rotation and in the climate characteristics
In: Proceedings of the "Journees 2008 Systemes de reference 
spatio-temporels", M. Soffel and N. Capitaine (eds.), 
Lohrmann-Observatorium and Observatoire de Paris. 
2009, pp. 174-177 
  

Which Came First? - The Chicken or the Egg?

A Presentation to the 2008 Annual General Meeting of the
Lavoisier Society by Ian Wilson

http://www.lavoisier.com.au/articles/greenhouse-science/solar-cycles/IanwilsonForum2008.pdf

2006


Wilson, I. R. G., 2006, Possible Evidence of the 
De Vries, Gleissberg and Hale Cycles in the Sun’s 
Barycentric Motion, Australian Institute of Physics 17th
National Congress 2006, Brisbane, 3rd -8th December 
2006 (No longer available on the web)