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Journal of Geophysical Research Atmospheres
Article . 2002 . Peer-reviewed
License: Wiley Online Library User Agreement
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Simulating the lunar geomagnetic variations

Authors: R. J. Stening; C. Carmody; J. Du;

Simulating the lunar geomagnetic variations

Abstract

The equivalent circuit method is used to simulate the lunar semidiurnal geomagnetic tides. Samples of observations of the lunar geomagnetic tide are also presented, derived from analyses of hourly values of the horizontal component of the magnetic field recorded at several observatories. These are compared to the results of the simulations at different seasons. The winds used in the simulation are derived from the Global Scale Wave Model (GSWM) and from those determined by Forbes and Gillette [1982]. The calculations are only carried out for a lunar age of zero (new moon), but this still enables a comparison to be made with the observed phases of the lunar geomagnetic tide. A mostly fair agreement is obtained both for the amplitude and phase of the lunar geomagnetic tide. The agreement is generally better when winds from the Global Scale Wave Model are used rather than those from the earlier Forbes and Gillette model. The July simulation gives poorer agreement: there is corroborating evidence that the phase of the winds near the equator in July should be about 3 hours earlier than that presently given by the GSWM. The situation in December is different from other seasons both in the simulation and the observations, but agreement is difficult to achieve on account of the year‐to‐year variability in this season.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
8
Average
Top 10%
Average
bronze