Interannual variations in the length of day and ENSO events in 1982-1983 and 1997-1998

Authors
Zheng, DW Zhou, YH Liao, XH Ding, XL Chen, YQ Chao, J Li, ZL
Citation
Dw. Zheng et al., Interannual variations in the length of day and ENSO events in 1982-1983 and 1997-1998, SCI CHINA A, 44(1), 2001, pp. 128-NIL_1
Citations number
22
Categorie Soggetti
Multidisciplinary
Journal title
SCIENCE IN CHINA SERIES A-MATHEMATICS PHYSICS ASTRONOMY
ISSN journal
10016511 → ACNP
Volume
44
Issue
1
Year of publication
2001
Pages
128 - NIL_1
Database
ISI
SICI code
1001-6511(200101)44:1<128:IVITLO>2.0.ZU;2-B
Abstract
The length of day series during the period of 1962.0-2000.0, the atmospheri c angular momentum and the Southern Oscillation Index are adopted to analyz e the relationships among the ENSO events that have occurred since 1960, th e changes in the length of day and the atmospheric angular momentum. Attent ion is particularly given to the different effects of the 1982-1983 and 199 7-1998 ENSO events on the variations of Earth rotation. The synthetic excit ation effects of multi-scale atmospheric oscillations on the anomalous vari ations of the interannual rates of Earth rotation are revealed by means of the time-frequency spectrum of the wavelet transform.