Coupling effects of Earth oblateness and direct solar radiation pressure on the motion of an artificial satellite are evaluated. Secular and periodic terms are retained up to order three and two respectively, where the coefficient 2 J of the second zonal harmonic of the geopotential is considered of first order. The solution revealed the existence of secular terms at order three that arises fro...

The impact of the mismodelling in the Earth’s geopotential coefficient C22 on the detection of the general relativistic Lense-Thirring and gravitomagnetic clock effects is investigated. The systematic error induced on the Lense-Thirring LAGEOS experiment amounts to almost 1%. Regarding the gravitomagnetic clock effect, the systematic error induced on the satellite’s azimuthal location is 1-2 or...

The Southern Annular Mode (SAM, also known as the Antarctic Oscillation—AAO) explains most of climate variability in Hemisphere. A ring pattern mean sea level pressure (MSLP) or 500 hPa geopotential height around Antarctica characterizes SAM. Differences MSLP values between SH mid and high latitudes define positive negative SAM phases with impacts on atmospheric circulation. Thus, investigating...

According to general relativity theory (GRT), the clock at a position with lower geopotential ticks slower than an identical one higher geopotential. Here, we provide comparison using non-transportable hydrogen and transportable for altitude transmission based on two-way satellite time frequency transfer (TWSTFT) technique. First, set fifth floor another ground floor, their height difference of...

Model simulations suggest that Madden–Julian oscillation (MJO) activity changes under the anthropogenic climate change background. However, satellite observations, which provide information on MJO convection activity, are not available before 1970s, hindering research long-term historical variability of MJO. This study aims at extending data length indices include both circulation and features,...

Spherical Harmonic Transforms (SHTs) which are non-commutative Fourier transforms on the sphere are critical in global geopotential and related applications. Among the best known global strategies for discrete SHTs of band-limited spherical functions are Chebychev quadratures and least squares for equiangular grids. With proper numerical preconditioning, independent of latitude, reliable analys...

The addition of an accurate pressure sensor to the inverted echo sounder (IES) has allowed for the development of a new method for calibrating the IES’s acoustic travel-time record without the need for coincident conductivity– temperature–depth (CTD) or expendable bathythermograph profiles. Using this method, the round-trip traveltime measurement of the IES can be calibrated into various dynami...

Abstract The paper presents research of the evolution resolution capabilities and approximation accuracy last decade global geopotential models based on space gravimetric measurements CHAMP, GRACE GOCE missions using their spectral characteristics. comparison between model data with point gravity anomalies quasigeoid heights for territory Novosibirsk region is shown. Based results conclusion wa...

An inverse annual variation is observed between surface pressure on the highest mountain, which has an elevation of approximately 4000 m, and in the lowlands of Taiwan (a subtropical island in east Asia). This inverse annual variation in surface pressure of high and low elevation in low latitudes reflects, essentially, a vertical phase reversal of the tropical circulation, which is illustrated ...