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Regional contributions to the atmospheric excitation of rapid polar motions
Journal of Geophysical Research: Atmospheres, 1989Daily fields of surface pressure produced by the National Meteorological Center during 1981–1985 are used to identify the sectors of the globe over which changes in atmospheric mass contribute most importantly to the excitation of intraseasonal variations in the Earth's polar axis.
David A. Salstein, Richard D. Rosen
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Excitation of polar motion by terrestrial water storage
We assess the role of Terrestrial Water Storage (TWS; that is, land hydrology in canopies, snow, soil, groundwater, lakes, wetlands, reservoirs, and rivers) and confirm its significant impact in driving polar motion on a wide range of timescales. For this purpose, we use the comprehensive hydrological model Water-GAP v2.2e in the range 1901-2019 with ...Mostafa Kiani Shahvandi +2 more
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ENSO-driven oceanic excitation of polar motion
The El Niño–Southern Oscillation (ENSO) is the dominant mode of variability in the atmosphere—ocean system. It is characterised by circulation anomalies in the tropical Pacific that affects other regions of the planet through teleconnections. Studies over the last decades have demonstrated that ENSO exerts a strong control on zonal atmospheric angular ...Lara Börger +2 more
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On the Excitation of Short-Term Variations in the Length of the Day and Polar Motion
Geophysical Surveys, 1984Variations in the distribution of mass within the atmosphere and changes in the pattern of winds produce fluctuations in all three components of the angular momentum of the atmosphere on time-scales upwards of a few days. It has been shown that variations in the axial component of atmospheric angular momentum during the Special Observing Periods in the
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On earthquake excitation of polar motion
Chinese Astronomy and Astrophysics, 1997openaire +1 more source
Seasonal excitation of polar motion estimated from recent geophysical models and observations
Journal of Geodynamics, 2009Aleksander Brzezinski, Jolanta Nastula
exaly
Hydrological excitation of polar motion by different variables from the GLDAS models
Journal of Geodesy, 2017Malgorzata Winska, Jolanta Nastula
exaly
Patterns of atmospheric excitation functions of polar motion from high‐resolution regional sectors
Journal of Geophysical Research, 2009Jolanta Nastula
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Hydrological signals in polar motion excitation – Evidence after fifteen years of the GRACE mission
Journal of Geodynamics, 2019Malgorzata Winska +2 more
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