Astronomy and Astrophysics – Astronomy
Scientific paper
May 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000acasn..41..148y&link_type=abstract
Acta Astron. Sin., Vol. 41, No. 2, p. 148 - 152
Astronomy and Astrophysics
Astronomy
1
Earth Rotation: Variations, Earth Atmosphere: Angular Momentum, Polar Motion
Scientific paper
The contribution of AAM to Earth rotation changes on seasonal time scale is studied. The new reanalysis of AAM data during 1979 - 1995 provided by NCEP/NCAR is used. The results show that the contributions of the atmosphere to the annual and semi-annual LOD changes are 95% and 88%, respectively, including the contributions of atmospheric wind and pressure. The results of the excitation to polar motion are also presented.
Yu Nanhua
Zheng Dawei
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