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A spectral analysis of rainfall in Edo and Delta States (formerly Mid‐Western Region), Nigeria
Author(s) -
Adejuwon Joseph O.
Publication year - 2011
Publication title -
international journal of climatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.58
H-Index - 166
eISSN - 1097-0088
pISSN - 0899-8418
DOI - 10.1002/joc.2248
Subject(s) - spectral analysis , climatology , delta , smoothing , geography , environmental science , hodrick–prescott filter , meteorology , physical geography , geology , mathematics , statistics , physics , quantum mechanics , astronomy , spectroscopy , keynesian economics , economics , business cycle
Power spectral analysis of annual rainfall has been performed for Edo and Delta States (formerly Mid‐Western Region) in Nigeria using data for 1931–1997 in order to identify any regular periodicities which may be present. The Hanning filter was employed for the purpose of smoothing the power spectral. Irregular short‐term periodicities were evident with significant cycles of between 3 and 6 years. Copyright © 2010 Royal Meteorological Society