Other
Scientific paper
May 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999itn....26....5c&link_type=abstract
The impact of El Niño and other low-frequency signals on Earth rotation and global Earth system parameters, David A. Salstein, B
Other
Scientific paper
El Nino warming in the equatorial Pacific causes a distinctive change in both local and global sea level, which can be measured quite accurately with space-borne satellite altimeters such as TOPEX/POSEIDON. The sea level changes are reflective of changes in the internal density structuie of the ocean due to variations in the ocean heat storage and mass. Because the anomalous warming tends to begin significantly below the ocean's surface, altimetry can detect El Niño Signals weeks to months before surface temperature measurements detect them. An example of this is tracking strong Kelvin waves across the Pacific several months before the peak of El Nino warming. Although the altimeter data alone cannot differentiate between changes in ocean heat storage and mass, by combining altimetry with other data and Output from numerical modeis, one can begin to study how changes in the ocean mass influence the Earth's rotation. These Signals are examined during the El Niño event of 1997.
Chambers Don P.
Chen Jing-Ling
Tapley Byron D.
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