G04 Earth Rotation and Geodynamics

IAG (Geodesy)



30-Jun-2015, 15:00 - 16:30


 
Abstract content:

Prediction of the Chandler Wobble and Climate Variability

Similarities have been found between the Earth rotation and climate characteristics, such as temperature and sea level changes. Chandler wobble amplitude has been decreasing in 2010s as in 1930s. It is very similar to what was observed for the temperature changes, attributed to Atlantic Multidecadal Oscillation (AMO) and El Nino activity (ENSO). If these processed are interrelated, it could be used for their prediction. We try to predict the complex envelope of the Chandler wobble. The equation for the complex envelope propagation through the Euler-Liouville equation was derived. The excitation of the Chandler wobble reconstructed by Panteleev's filter was analyzed. Similarities with the climate change characteristics are discussed.

 
Author(s):
L. Zotov1,2, C. Bizouard2.
1Sternberg Astronomical Institute- Lomonosov Moscow State University, Laboratory of gravimetry, Moscow, Russia.
2Paris Observatory, SYRTE, Paris, France.

 

Keywords:
Earth rotation     Chandler wobble     Cliamte change