A Non-tidal Atmospheric Loading Model: On Its Quality and Impacts on Orbit Determination and C20 from SLR

A Non-tidal Atmospheric Loading Model: On Its Quality and Impacts on Orbit Determination and C20 from SLR

Based on European Centre for Medium-Range Weather Forecasts (ECMWF) ERA-Interim data we model displacements of global station coordinates due to non-tidal atmospheric loading based on Farrel’s theory. We compare these displacements to publicly available external displacements. We apply our displacem...

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Hauptverfasser: König, Rolf, Fagiolini, Elisa, Raimondo, Jean-Claude, Vei, Margarita
Format: Tagungsbericht
Sprache:eng
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Degree two harmonics
Non-tidal atmospheric loading
Precise orbit determination
SLR
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creator König, Rolf
Fagiolini, Elisa
Raimondo, Jean-Claude
Vei, Margarita
description Based on European Centre for Medium-Range Weather Forecasts (ECMWF) ERA-Interim data we model displacements of global station coordinates due to non-tidal atmospheric loading based on Farrel’s theory. We compare these displacements to publicly available external displacements. We apply our displacements to Satellite Laser Ranging (SLR) data processing over a recent 6 years period of the LAGEOS, LARES, AJISAI, STARLETTE and STELLA geodetic satellites. We assess the impact of the loading model on the orbital fits of these missions. Indeed a tiny improvement shows up. We also quantify the impact of the non-tidal loading model on the large scale figure of the Earth expressed in terms of weekly C(2,0) harmonics. It turns out that here no effect is visible.
doi_str_mv 10.1007/1345_2016_257
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subjects Degree two harmonics
Non-tidal atmospheric loading
Precise orbit determination
SLR
title A Non-tidal Atmospheric Loading Model: On Its Quality and Impacts on Orbit Determination and C20 from SLR
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