An analysis of periodicities in the 1470 to 1974 beijing precipitation record

Details An analysis of periodicities in the 1470 to 1974 beijing precipitation record An analysis of periodicities in the 1470 to 1974 beijing precipitation record

Jun 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983georl..10..436h&link_type=abstract

Geophysical Research Letters, Volume 10, Issue 6, p. 436-439

Physics

23

Scientific paper

An analysis of a time series consisting of an annual index of dryness/wetness for the years 1470 to 1974 in Beijing, China is presented. Its power spectrum shows that dominant cycles occur with long periods of the order of 80 years. Cycles with periods of 11 and 22 years are weak or non-existent, but a significant signal at 18.7 years (which is also the period of a component of the lunar tide generating force) is detected. The long term variations in Beijing precipitation appear to lag long term (Gleissperg) variations in solar activity by nearly 75 years. A pattern which spans nearly 150 years in the Beijing record is found to be repeated with notable similarity.

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