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ASIAN STORMS PUSH THE EARTH AROUND. Earth's axis of rotation undergoes several gyrations, such as the precession of the equinoxes,
which takes about 26,000 years. Recently two of the most important axis gyrations inadvertently cancelled each other, allowing geophysicists
to measure other, subtler gyrations that would normally be difficult to detect. The two larger wobbles are the 433-day-cycle Chandler
Wobble (whose origin is not very well known) and the wobble caused by annual weather oscillations. Their combined effect is normally to
cause the rotational axis to migrate by as much as 10 meters. But from December 2005 to February 2006 their mutual nullification reduced
the axis excursion to less than 1 meter. This allowed Belgian scientists to study fainter, lesser forces whose exertions could briefly be
measured. The scientists saw signs of what they believe to be an influence on Earth's wobble day by day triggered by storms over Asia and
northern Europe.

(Geophysical Research Letters, July 2006)