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Total swell: significant wave height and mean direction. Wave height is the vertical distance between trough and crest. Wave period is the time between the passage of one wave crest and the next. The arrow direction is the direction the waves are moving towards... Latest forecast.
Ocean Wave Model - ECWAM Purpose. The ECMWF Ocean Wave Model (ECWAM) describes the development and evolution of wind generated surface waves and their height, direction and period. Its domain extends across the full globe. ECWAM is coupled to:
Mean wave period. The mean wave period, [math]T_m [/math], is the mean of all wave periods in a time-series representing a certain sea state. Peak wave period. Fig. 2. Wave spectrum: [math]H_ {m0}=1m, T_ {02}=3.55s, T_p=5s [/math] (corresponding to peak frequency of 0.2 [math]s^ {-1} [/math])
What ocean wave forecast products are provided? Variables predicted by the IFS include the full two-dimensional wave spectra, significant wave height, mean wave period and mean wave direction.
The ERA-40 data set is a comprehensive set of global analyses describing the state of the atmosphere, land and ocean-wave conditions from mid-1957 to August 2002. Academics from other countries may access the ERA-40 data set via their National Meteorological Agency or from the ECMWF directly.
We are most familiar with the kind of waves that break on shore, or rock a boat at sea, but there are many other types of waves that are important to oceanography: Internal waves form at the boundaries of water masses of different densities (i.e. at a pycnocline), and propagate at depth.
may be calculated directly from the wind velocity. We provide an Excel spreadsheet to compute the wave period, length, height and celerity, as well as horizontal and vertical particle velocities for any water depth, bottom slope and distance below the reference water level. The wave profile and
