<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>The Earth System Modelling Group of GeoForschungsZentrum Potsdam (ESMGFZ) provides geodetic products for gravity variations, Earth rotation excitations, and Earth surface deformations related to mass redistributions and mass loads in the atmosphere, ocean, and terrestrial water storage. Earth rotation excitation compiled as effective angular momentum (EAM) functions for each Earth subsystem (atmosphere, ocean, continental hydrology) are important for Earth rotation prediction. Especially the 6-day forecasts extending the model analysis runs offer essential information for the improvement of ultra-short-term Earth rotation predictions. In addition to the individual effective angular momentum function of each subsystem, ESMGFZ calculates a combined EAM prediction product. Adjusted to the official Earth orientation parameter (EOP) products IERS 14C04 and Bulletin A, this EAM prediction product allows to extrapolate the polar motion and Length-of-Day parameter time series for 90 days into the future via the Liouville equation. ESMGFZ submits such an EOP prediction to the 2nd EOPPCC campaign.</p>
</abstract>

The Earth System Modelling Group of GeoForschungsZentrum Potsdam (ESMGFZ) provides geodetic products for gravity variations, Earth rotation excitations, and Earth surface deformations related to mass redistributions and mass loads in the atmosphere, ocean, and terrestrial water storage. Earth rotation excitation compiled as effective angular momentum (EAM) functions for each Earth subsystem (atmosphere, ocean, continental hydrology) are important for Earth rotation prediction. Especially the 6-day forecasts extending the model analysis runs offer essential information for the improvement of ultra-short-term Earth rotation predictions. In addition to the individual effective angular momentum function of each subsystem, ESMGFZ calculates a combined EAM prediction product. Adjusted to the official Earth orientation parameter (EOP) products IERS 14C04 and Bulletin A, this EAM prediction product allows to extrapolate the polar motion and Length-of-Day parameter time series for 90 days into the future via the Liouville equation. ESMGFZ submits such an EOP prediction to the 2nd EOPPCC campaign.

ESMGFZ Products for Earth Rotation Prediction

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{"article-title":"ESMGFZ Products for Earth Rotation Prediction"}

The Earth System Modelling Group of GeoForschungsZentrum Potsdam (ESMGFZ) provides geodetic products for gravity variations, Earth rotation excitations, and...

ESMGFZ Products for Earth Rotation Prediction

Publié en ligne: 05 janv. 2023

Pages: 254 - 261

Reçu: 07 avr. 2022

Accepté: 08 juil. 2022

DOI: https://doi.org/10.2478/arsa-2022-0022

Mots clés
Effective Angular Momentum, ESMGFZ, Earth Rotation Prediction, Polar Motion, Length-of-Day

© 2022 Robert Dill et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

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ESMGFZ Products for Earth Rotation Prediction

Publié en ligne: 05 janv. 2023

Pages: 254 - 261

Reçu: 07 avr. 2022

Accepté: 08 juil. 2022

DOI: https://doi.org/10.2478/arsa-2022-0022

Mots clésEffective Angular Momentum, ESMGFZ, Earth Rotation Prediction, Polar Motion, Length-of-Day

© 2022 Robert Dill et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Figure 1.

Figure 2.

Figure 3.

Figure 4.

Mots clés
Effective Angular Momentum, ESMGFZ, Earth Rotation Prediction, Polar Motion, Length-of-Day