Identifying the sensitivity of GPS to non-tidal loadings at various time resolutions: examining vertical displacements from continental Eurasia

Abstract We examine the sensitivity of Global Positioning System (GPS) to non-tidal loading for a set continental Eurasia permanent stations. utilized daily vertical displacements available from Nevada Geodetic Laboratory (NGL) at stations located least 100 km away coast. Loading-induced predictions earth’s crust are provided by Earth-System-Modeling Group GFZ (ESMGFZ). demonstrate that hydrological loading, supported barystatic sea-level changes close global mass budget (HYDL + SLEL), contributes GPS only in seasonal band. Non-tidal atmospheric oceanic (NTAL NTOL), correlates positively with almost all time resolutions, including non-seasonal 2 days 5 months, which often considered as noise, intra-seasonal and periods between 4 months 1.4 years, and, also, inter-annual signals 1.1 3.0 years. Correcting NTAL leads reduction series variances, evoking whitening stochastic character decrease standard deviation noise. Both lead, on average, an improvement uncertainty velocity factor 2. To reduce its impact displacement series, we recommend is applied observation level during processing observations. HYDL might be corrected or remain data stage analysis.