Consistent set of atmospheric and oceanic angular momentum, 1994 - 2022
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Data supplement for manuscript Kiani Shahvandi, M., Schindelegger, M., Börger, L., Mishra, S., & Soja, B. (2024). Revisiting the excitation of free core nutation. Journal of Geophysical Research: Solid Earth, 129, e2024JB029583. https://doi.org/10.1029/2024JB029583 Specifications for AAM: Data source: Modern-Era Retrospective analysis for Research and Applications version 2 (MERRA-2) Temporal resolution & coverage: 3 hourly, 1994--2022 Units for mass and motion terms: kg*m^2*s^(-1) Processing: Stationary signals due to atmospheric tides have been removed Other processing steps: Mass terms include angular momentum changes associated with the ocean's inverted barometer (IB) response Specifications for OAM: Derived from a barotropic ocean model simulation (the DEBOT model w/o data assimilation) using MERRA-2 atmospheric forcing Temporal resolution & coverage: 3 hourly, 1994--2022 Units for mass and motion terms: kg*m^2*s^(-1) Processing: Stationary signals due to atmospheric tides have been removed Other processing steps: Angular momentum changes associated with the ocean's IB response are not part of OAM, but AAM (see above) For further information see ReadMe.txt. Terms of usage: If you use the AAM time series, please cite: Kiani Shahvandi, M., Schindelegger, M., Börger, L., Mishra, S., & Soja, B. (2024). Revisiting the excitation of free core nutation. Journal of Geophysical Research: Solid Earth, 129, e2024JB029583. https://doi.org/10.1029/2024JB029583 If you use the OAM time series, please cite: Harker, A.A., Schindelegger, M., Ponte, R.M., Salstein, D.A., 2021. Modeling ocean-induced rapid Earth rotation variations: an update. J Geod 95, 110. https://doi.org/10.1007/s00190-021-01555-z Please cite both papers if you use the AAM and OAM time series. Contact: L. Börger (lboerger@igg.uni-bonn.de)
