Nutation model

NUTATION MODELS

Nutation : tidal gravitational forcing

Rigid Earth

Non rigid Earth

Nutation model IAU 1980
Conventional model : nutation model IAU 2000A (include the effects of the atmosphere, oceans and core/mantle ELM coupling) :
- IAU 2000 Nutation model
- Offsets with respect to the model IAU 1980 (662 lunisolar terms + 687 planetary terms) [ description ]
- Greenwich Sideral Time based on the IAU2000A precession-nutation model

Nutation : Oceanic effects

Tidal effects	Non tidal
Mathews, Herring, Buffet (2002)	Petrov et al. (1998) de Viron, Dehant (1999) de Viron et al. (2002)

Nutation : Atmospheric effects

Nutation : Empirical astrometric models