Smaller solar elliptic constituent. This constituent, wi 2 2 th T , modulates the amplitude and frequency of S for the effect of variation in the Earth's orbital speed due to its elliptical orbit. Speed = 2T + h - p = 30.041,066,70 per solar hour
National Oceanic and Atmospheric Administration NOAA, Tide and Current Glossary, National Ocean Service, CO-OPS, Products and Services N/OPS3, Silver Spring, MD, USA 1999. http://co-ops.nos.noaa.gov/publications/glossary2. pdf, (ND/ Tide and Current - Amer) {830}