Journal of Geophysical Researcharticle on Lunar declinational tides


Monthly lunar declination extremes’ influence on tropospheric circulation patterns

Key Points

  • Monthly lunar declination deform Rossby longwaves
  • The deformation signal is distinctly regional and high latitude
  • A case study of the Great Storm of 1987 demonstrates effect

Daniel S. Krahenbuhl

School of Geographical Sciences and Urban Planning, Arizona State University, Tempe, Arizona, USA

Matthew B. Pace

School of Geographical Sciences and Urban Planning, Arizona State University, Tempe, Arizona, USA

Randall S. Cerveny

School of Geographical Sciences and Urban Planning, Arizona State University, Tempe, Arizona, USA

Robert C. Balling Jr.

School of Geographical Sciences and Urban Planning, Arizona State University, Tempe, Arizona, USA

Short-term tidal variations occurring every 27.3 days from southern (negative) to northern (positive) maximum lunar declinations (MLDs), and back to southern declination of the moon have been overlooked in weather studies. These short-term MLD variations’ significance is that when lunar declination is greatest, tidal forces operating on the high latitudes of both hemispheres are maximized. We find that such tidal forces deform the high latitude Rossby longwaves. Using the NCEP/NCAR reanalysis data set, we identify that the 27.3 day MLD cycle’s influence on circulation is greatest in the upper troposphere of both hemispheres’ high latitudes. The effect is distinctly regional with high impact over central North America and the British Isles. Through this lunar variation, midlatitude weather forecasting for two-week forecast periods may be significantly improved.


[ I have been putting off going to see these guys until my improved maps are on line, seems I might get a fair hearing?]

Filed under: Long-term Lunar Effects,Natural Processes,Supporting Research — by Richard Holle @ 7:15 am on April 17, 2012

Lunar declinational tidal patterns

Sample of three cycles of lunar declinational tides synchronized by declinational angle, just an interim step to the production of a better high resolution longer sequence.


As promised a better higher resolution product, same data, pics, done at home by my daughter April


Three cycles of lunar declination tides from Christmas 2009 to march 8 2010 starting at 10 degrees North of the equator back to the same point.

Start time and some of the jumps in the movie are due to problems with the GOES data base missing some of the picture needed, however the synchronizing is based on the same lunar declination angle on all three, per each frame with in a degree or so. The hope was to be able to show that there are repeating patterns in the global circulation because of the lunar declinational tidal effects acting on the atmosphere.


Filed under: Long-term Lunar Effects,Natural Processes — by Richard Holle @ 7:07 pm on March 13, 2012

Austrailan lunar tidal study

Paul Vaughan says:

Just learned of this brand new release:

Wilson, I.R.G. (2012). 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 6, 49-60.

Will read when time permits.

[I have read and saved it is very informative but does not investigate declinational components driving the meridional flow surges in the atmosphere, just pressure waves of the interactions of the solar  pressure and the “lunar tidal lifting” timing effects]

Filed under: In other online forums,Long-term Lunar Effects,Natural Processes,Supporting Research — by Richard Holle @ 8:07 am on March 2, 2012

Basil Copeland and Anthony Watts

[found this question by one of the authors of the post;]
Basil says:


I’m not ignoring you. I’m wrestling with the concept of how we would “prove” (or falsify) that the decadal or bidecadal cycles in global temperature are “caused” by ocean current cycles which are themselves likely driven by the same exogenous sources we’re attributing the temperature cycles to. For example, in the post I did on the PDO, I recall both a bidecadal and even a pentadecadal cycle in the PDO and NPI. Does that mean these are “causing” the cycles we’re seeing in global temperature? Or is it not more likely that these are just different manifestations of a common external (or exogenous) driver (or drivers)?

Or, suppose we could definitely link the decadal signal in global temperature trends to ENSO. So? What is driving ENSO? I’m sure we can cross-correlate cyclical variation global temperature with a variety of different climate variables. But you understand as well as I do that this doesn’t “prove” causation. It merely establishes association, possibly driven by common forces.

What are those common forces? Besides lunar and solar, what other candidates are there for the ultimate cause?

[My answer would be the lunar declinational tides being synchronized to the rotation of the magnetic poles of the sun.]

Filed under: In other online forums,Long-term Lunar Effects,Supporting Research — by Richard Holle @ 9:51 am on November 16, 2011

Richard Mackey “The suns role in regulating the Earth’s climate”

[Found this paper today in an article posted before I started reading WUWT, linked from;]

Here are some notes about the lunar nodal cycle. I’ve extracted them from my paper, “The Sun’s role in regulating the Earth’s climate” published recently in the Journal of Energy and Environment paper (VOLUME 20 No. 1 2009).
By way of introduction, here is the Abstract of my paper:
This paper introduces this thesis:
The Sun-Earth system is electromagnetically, magneto-hydrodynamically and gravitationally coupled, dominated by significant non-linear, non-stationary interactions, which vary over time and throughout the three-dimensional structure of the Earth, its atmosphere and oceans. The essential elements of the Sun-Earth system are the solar dynamo, the heliosphere, the lunisolar tides, the Earth’s inner and outer cores, mantle, crust, magnetosphere, oceans and atmosphere. The Sun-Earth system is non-ergodic (i.e. characterised by continuous change, complexity, disorder, improbability, spontaneity, connectivity and the unexpected). Climate dynamics, therefore, are non-ergodic, with highly variable climatological features at any one time.
A theoretical framework for considering the role of the Sun in relation to the Earth’s climate dynamics is outlined and ways in which the Sun affects climate reviewed. The forcing sources (independent variables) that influence climate processes (dependent variables) are analysed. This theoretical framework shows clearly the interaction effects between and amongst the two classes of variables. These seem to have the greatest effect on climate dynamics.
Climate processes are interconnected and oscillating, yielding variable periodicities. Solar processes, especially when interacting, amplify or dampen these periodicities producing distinctive climatic cycles. As solar and climate processes are non-linear, non-stationary and non-ergodic, appropriate analytic methodologies are necessary to reveal satisfactorily solar/climate relationships.
In this context, the Lunar Nodal Cycle is but one of the solar variables (arising from the Sun’s gravitational field) that has to be understood in order to understand fully the many ways by which the Sun regulates the climate of the Earth.
The lunar nodal cycle and climate.
The 18.6 year lunar nodal cycle (LNC) tidal periodicity has a pervasive role in climate change. It is the period of a full rotation of the Moon’s orbital plane around the ecliptic, the geometric plane of the Earth’s orbit around the Sun. It is the clearest tidal signal in the thousands of time series analysed. (more…)

Filed under: In other online forums,Long-term Lunar Effects,Supporting Research — by Richard Holle @ 9:41 am on