From Glossary of Meteorology
(Redirected from Harmonics)


  1. Any integral multiple of the lowest (or fundamental) frequency of a physical system.

    For example, the motion of a taut, gently plucked violin string is the superposition of sinusoidal motions with frequencies ω0, ω1 = 2ω0, ω2, 3ω0, . . . where ω0 is the fundamental frequency and ω1, ω2, . . . are the harmonics (or overtones), resulting in a harmonious composite sound.

  2. A sine or cosine component of the Fourier series representation of an empirical or theoretical function.

Copyright 2022 American Meteorological Society (AMS). For permission to reuse any portion of this work, please contact permissions@ametsoc.org. Any use of material in this work that is determined to be “fair use” under Section 107 of the U.S. Copyright Act (17 U.S. Code § 107) or that satisfies the conditions specified in Section 108 of the U.S.Copyright Act (17 USC § 108) does not require AMS’s permission. Republication, systematic reproduction, posting in electronic form, such as on a website or in a searchable database, or other uses of this material, except as exempted by the above statement, require written permission or a license from AMS. Additional details are provided in the AMS Copyright Policy statement.