Leonid Zotov

National Research University Higher School of Economics

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Christian Bizouard

Systèmes de Référence Temps-Espace

N. S. Sidorenkov

Hydrometeorological Research Centre of Russian Federation

C. K. Shum

The Ohio State University

НЛ

Н. Л. Фролова

Moscow State University

Ch. Bizouard

Observatoire de Paris

V. L. Gorshkov

Pulkovo Observatory

Zinovy Malkin

Pulkovo Observatory

Peter Dokukin

Peoples' Friendship University of Russia

Xueqing Xu

Shanghai Astronomical Observatory

V. P. Savinykh

Moscow State University of Geodesy and Cartography

Cooperative Institutions

Russian Academy of Sciences

Lomonosov Moscow State University

Geological Institute

Moscow State University

Moscow State University of Geodesy and Cartography

Lamont-Doherty Earth Observatory

Institute of Water Problems

Institute of Marine Science

Centre National de la Recherche Scientifique

Institute of the Earth’s Crust

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Combined SAI-SHAO prediction of Earth Orientation Parameters since 2012 till 2017

Geodesy and Geodynamics (2018)

Leonid Zotov Xueqing Xu Yonghong Zhou Arkadiy Skorobogatov

As the participants of Earth Orientation Parameters Combination of Prediction Pilot Project (EOPC PPP), Sternberg Astronomical Institute of Moscow State University (SAI) and Shanghai Astronomical Observatory (SHAO) have accumulated ∼1800 days of Earth Orientation Parameters (EOP) predictions since 2012 till 2017, which were up to 90 days into the future, and made by four techniques: auto-regression (AR), least squares collocation (LSC), and neural network (NNET) forecasts from SAI, and least-squares plus auto-regression (LS + AR) forecast from SHAO. The predictions were finally combined into SAI-SHAO COMB EOP prediction. In this work we present five-year real-time statistics of the combined prediction and compare it with the uncertainties of IERS bulletin A predictions made by USNO.

Least-squares function approximation

10.1016/j.geog.2018.11.002

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Citations (7)

Moon influence on equatorial atmospheric angular momentum and consequences for nutation

HAL (Le Centre pour la Communication Scientifique Directe) (2014)

Christian Bizouard Leonid Zotov

Nutation

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Combined Prediction of Earth Orientation Parameters

Lecture notes in electrical engineering (2012)

Xueqing Xu Leonid Zotov Yonghong Zhou

Earth observation satellite

Earth observation

10.1007/978-3-642-29175-3_32

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Citations (7)

Excitation function reconstruction using observations of the polar motion of the Earth

Leonid Zotov

Polar motion

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Moon influence on equatorial atmospheric angular momentum

HAL (Le Centre pour la Communication Scientifique Directe) (2014)

Christian Bizouard Leonid Zotov N. S. Sidorenkov

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Analysis of Chandler wobble excitation, reconstructed from observations of the polar motion of the Earth

Leonid Zotov

Polar motion

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Panteleev’s corrective filtering as the regularizing algorithm for the Earth’s Chandler wobble excitation reconstruction

Leonid Zotov Chaoyang Zhang

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Can global geophysical data be useful in hydrology of river basins? Example of the GRACE satellite gravimetry

Geoinformatics research papers (2016)

Alexander Gelfan Н. Л. Фролова Inna Krylenko Y. Motoviliv Leonid Zotov

Gravimetry

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Reconstruction of prograde and retrograde Chandler excitation

Journal of Inverse and Ill-Posed Problems (2015)

Leonid Zotov Christian Bizouard

Abstract Observed polar motion consists of uniform circular motions at both positive (prograde) and negative (retrograde) frequencies. Generalized Euler–Liouville equations of Bizouard, taking into account Earth's triaxiality and asymmetry of the ocean tide, show that the corresponding retrograde and prograde circular excitations are coupled at any frequency. In this work, we reconstructed the polar motion excitation in the Chandler band (prograde and retrograde). Then we compared it with geophysical excitation, filtered out in the same way from the series of the Oceanic Angular Momentum (OAM) and Atmospheric Angular Momentum (AAM) for the period 1960–2000. The agreement was found to be better in the prograde band than in the retrograde one.

Polar motion

Momentum (technical analysis)

Circular motion

10.1515/jiip-2013-0085

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Singular spectral analysis of GRACE observations

AGU Spring Meeting Abstracts (2009)

Leonid Zotov Chi Tai Shum

Spectral Analysis

Singular Spectrum Analysis

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