13 citations · 50 across the 8 of their papers we have counts for
5 papers · 1 filter
On the Nature and Origin of Atmospheric Annual and Semi-annual Oscillations
V. Courtillot, J-L. Le Mouël, F. Lopes +1
This paper proposes a joint analysis of variations of global sea-level pressure and of Earth's rotation (RP), expressed as the coordinates of the rotation pole and length of day. S…
On the annual and semi-annual components of variations in extent of Arctic and Antarctic sea-ice
F. Lopes, V. Courtillot, D. Gibert +1
The time series of northern hemisphere (NHSI) and southern hemisphere (SHSI) sea-ice extent are submitted to singular spectral analysis (SSA). The components are analyzed with Lapl…
On Sea-Level Change in Coastal Areas
V. Courtillot, JL. Le Mouël, F. Lopes
Variations in sea-level, based on tide gauge data (GSLTG) and on combining tide gauges and satellite data (GSLl) are subjected to singular spectrum analysis (SSA), to determine the…
Triskels and Symmetries of Mean Global Sea-Level Pressure
F. Lopes, V. Courtillot, J-L. Le Mouël
The evolution of mean sea-level atmospheric pressure since 1850 is analyzed using singular spectrum analysis. Maps of the main components (the trends) reveal striking symmetries of…
On two formulations of polar motion and identification of its sources
F. Lopes, V. Courtillot, JL. Le Mouël +1
Differences in interpretation may arise from differences in formulation of the equations of celestial mechanics. This paper focuses on the Liouville system of differential equation…