2 citations · 7 across the 10 of their papers we have counts for
10 papers
Assessment of a planetary model to predict Rieger periodicity in sunspots and flares
Ian R. Edmonds
This paper develops a planetary model to predict the occurrence of intermediate range periodicity in solar activity, in particular the ~155 day Rieger periodicity in flare activity…
Revisiting 154-day periodicity in the occurrence of hard flares. A planetary influence?
Ian Edmonds
Rieger et al (1984) reported observations of a 154 day periodicity in flares during solar cycle 21. This paper discusses the observations in the light of a simple empirical planeta…
Planetary model of sunspot emergence: A spectral and autocorrelation analysis
Ian Edmonds
This paper is concerned with intermediate range periodicity in the sunspot area spectrum. An empirical model of sunspot area emergence based on Mercury planet conjunctions was deve…
Are intermediate range periodicities in sunspot area associated with planetary motion?
Ian Edmonds
In this paper we examine the possibility that intermediate range periodicities in sunspot area can be linked to Mercury or to Mercury-planet conjunction periods. We show that peaks…
Evidence of a planetary influence on solar activity: Phase coherence of the variation in sunspot area with the tidal effect of Mercury
Ian Edmonds
There have been numerous reports of quasiperiodicities in solar activity in the intermediate period range. However, no accepted explanation for the episodic occurrence of quasiperi…
Sensitivity of sunspot area to the tidal effect of planet Mercury during solar cycle 23
Ian Edmonds
We present evidence that the allowed periods of equatorially trapped Rossby wave modes on the Sun coincide closely with the 88 day period and 176 day sub harmonic period of Mercury…
Evidence of two different types of short term solar modulation of regional surface temperature and cloud
Ian Edmonds
Recent work indicates that 27 day variations in cosmic ray flux during 2007 2009 are phase locked to 27 day variations in cloud and surface temperature at Shetland. Here we extend…
Association of a planetary tidal effect with the time variation of the ~13.5 day component of geomagnetic activity
I. R. Edmonds
We show that there is a previously unreported quad-annual variation in the ~13.5 day component of the aa index of geomagnetic activity. We derive a model based on the planetary tid…
On the semi-annual, 27 day, variation in geomagnetic activity, cloud cover and surface temperature
Ian Edmonds
We develop a basic model of the time variation of geomagnetic activity and show that the model predicts, with decreasing levels of exactitude, the time variation of the ~27 day per…
The correlation of 27 day period solar activity and daily maximum temperature in continental Australia
Ian Edmonds
We report the first observation of a 27 day period component in daily maximum temperature recorded at widely spaced locations in Australia. The 27 day component, extracted by band…