Created: Feb. 4, 2021

Proposer:

Proposed Date:

Change Date: Feb. 4, 2021, 4:33 p.m.

Term: **sea_surface_wave_period_at_variance_spectral_density_maximum**

Unit: s

Unit ref: UTBB

AMIP:

GRIB:

A period is an interval of time, or the time-period of an oscillation. The sea_surface_wave_period_at_variance_spectral_density_maximum, sometimes called peak wave period, is the period of the most energetic waves in the total wave spectrum at a specific location.

Change Date: Feb. 4, 2021, 4:35 p.m.

Term: **sea_surface_wave_period_at_variance_spectral_density_maximum**

Unit: s

Unit ref: UTBB

AMIP:

GRIB:

A period is an interval of time, or the time-period of an oscillation. The sea_surface_wave_period_at_variance_spectral_density_maximum, sometimes called peak wave period, is the period of the most energetic waves in the total wave spectrum at a specific location. Wave period is the interval of time between repeated features on the waveform such as crests, troughs or upward passes through the mean level. The wave directional spectrum can be written as a five dimensional function S(t,x,y,f,theta) where t is time, x and y are horizontal coordinates (such as longitude and latitude), f is frequency and theta is direction. S has the standard name sea_surface_wave_directional_variance_spectral_density. S can be integrated over direction to give S1= integral(S dtheta) and this quantity has the standard name sea_surface_wave_variance_spectral_density. The density of a substance is its mass per unit volume. The phrase "wave_period_at_variance_spectral_density_maximum", sometimes called peak wave period, describes the period of the most energetic waves within a given sub-domain of the wave spectrum.