Improvement of the empirical thermospheric model DTM: DTM94 - a comparative review of various temporal variations and prospects in space geodesy applications

Berger, Christiane; Biancale, R.; Ill, M.; Barlier, F.

doi:10.1007/s001900050158

Cited by 154 publications

(68 citation statements)

References 28 publications

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“…The background GPS solar radiation pressure (SRP) model, GSPM13 , is based on an empirical approach described by Bar-Sever and Kuang [2004], in which the force is represented as a truncated Fourier expansion about the Earth-Satellite-Sun angle. In order to support greater accumulation (and observability) of SRP errors, long integrations of 5 to 10 days are used.…”

Section: Appendix A: On the Independence Of The Dynamical Modelsmentioning

confidence: 99%

Realizing a terrestrial reference frame using the Global Positioning System

et al. 2015

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We describe a terrestrial reference frame (TRF) realization based on Global Positioning System (GPS) data alone. Our approach rests on a highly dynamic, long‐arc (9 day) estimation strategy and on GPS satellite antenna calibrations derived from Gravity Recovery and Climate Experiment and TOPEX/Poseidon low Earth orbit receiver GPS data. Based on nearly 17 years of data (1997–2013), our solution for scale rate agrees with International Terrestrial Reference Frame (ITRF)2008 to 0.03 ppb yr−1, and our solution for 3‐D origin rate agrees with ITRF2008 to 0.4 mm yr−1. Absolute scale differs by 1.1 ppb (7 mm at the Earth's surface) and 3‐D origin by 8 mm. These differences lie within estimated error levels for the contemporary TRF.

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Section: Appendix A: On the Independence Of The Dynamical Modelsmentioning

confidence: 99%

Realizing a terrestrial reference frame using the Global Positioning System

et al. 2015

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“…These orbit restitutions need precise acceleration models, as DORIS satellites orbit at an altitude around 800 km, where the drag effects cannot be neglected due to the important cross-sectional surface of the platforms. The mathematical model of the orbit trajectory uses, for drag estimation, the DTM94 empirical neutral model (Barlier et al, 1978;Berger et al, 1998). It directly depends on physical parameters, and in particular, the F10.7 solar flux and the Kp geomagnetic indices.…”

Section: Satellite Dragmentioning

confidence: 99%

From the Sun to the Earth: impact of the 27-28 May 2003 solar events on the magnetosphere, ionosphere and thermosphere

et al. 2006

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Abstract. During the last week of May 2003, the solar active region AR 10365 produced a large number of flares, several of which were accompanied by Coronal Mass Ejections (CME). Specifically on 27 and 28 May three halo CMEs were observed which had a significant impact on geospace. On 29 May, upon their arrival at the L1 point, in front of the Earth's magnetosphere, two interplanetary shocks and two additional solar wind pressure pulses were recorded by the ACE spacecraft. The interplanetary magnetic field data showed the clear signature of a magnetic cloud passing ACE. In the wake of the successive increases in solar wind pressure, the magnetosphere became strongly compressed and the sub-solar magnetopause moved inside five Earth radii. At low altitudes the increased energy input to the magnetosphere was responsible for a substantial enhancement of Region-1 field-aligned currents. The ionospheric Hall currents also intensified and the entire high-latitude current system moved equatorward by about 10 • . Several substorms occurred during this period, some of them -but not allapparently triggered by the solar wind pressure pulses. The storm's most notable consequences on geospace, including space weather effects, were (1) the expansion of the auroral oval, and aurorae seen at mid latitudes, (2) the significant modification of the total electron content in the sunlight highlatitude ionosphere, (3) the perturbation of radio-wave propagation manifested by HF blackouts and increased GPS signal scintillation, and (4) the heating of the thermosphere, causing

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“…It is based on temperature measurements by the OGO-6 satellite and density data from drag observations. The DTM-94 version (Berger et al, 1998) include data from the microaccelerometer CACTUS (1975CACTUS ( -1979 and from the Dynamic Explorer 2 satellite (1981)(1982)(1983)). This version is actually used for various applications: trajectory computation for satellites such as SPOT or TOPEX/POSEIDON and developments of gravity models.…”

Section: Thermospheric Modelsmentioning

confidence: 99%

From the Sun’s atmosphere to the Earth’s atmosphere: an overview of scientific models available for space weather developments

et al. 2002

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Abstract. Space weather aims at setting operational numerical tools in order to nowcast, forecast and quantify the solar activity events, the magnetosphere, ionosphere and thermosphere responses and the consequences on our technological societies. These tools can be divided in two parts. The first has a geophysical base (Sun, interplanetary medium, magnetosphere, atmosphere). The second concerns technological applications (telecommunications, spacecraft orbits, power plants ...). In this paper, we aim at giving an overview of the models that belong to the first class (geophysics) that might serve in the future as a basis for building global operational codes. For each model, we consider the physics underneath, the input and output parameters, and whether it is already operational, whether it may become operational in the near future, or if it is an academic research tool. Relevant references are given in order to serve as a starting point for further readings.

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Improvement of the empirical thermospheric model DTM: DTM94 - a comparative review of various temporal variations and prospects in space geodesy applications

Cited by 154 publications

References 28 publications

Realizing a terrestrial reference frame using the Global Positioning System

Realizing a terrestrial reference frame using the Global Positioning System

From the Sun to the Earth: impact of the 27-28 May 2003 solar events on the magnetosphere, ionosphere and thermosphere

From the Sun’s atmosphere to the Earth’s atmosphere: an overview of scientific models available for space weather developments

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