Assessment of the reliability of wave observations from voluntary observing ships: Insights from the validation of a global wind wave climatology based on voluntary observing ship data,
Gulev, S. K., V. Grigorieva, et al. (2003) (2003),
J. Geophys. Res.: Oceans Atmos., 108, 7 p. 3236–3257,
10.1029/2002JC001437.