- document
-
Sarris, Theodore E. (author), Tourgaidis, Stelios (author), Pirnaris, Panagiotis (author), Baloukidis, Dimitris (author), Papadakis, Konstantinos (author), Doornbos, Eelco (author), Siemes, C. (author), Visser, P.N.A.M. (author), van den IJssel, J.A.A. (author)Daedalus MASE (Mission Assessment through Simulation Exercise) is an open-source package of scientific analysis tools aimed at research in the Lower Thermosphere-Ionosphere (LTI). It was created with the purpose to assess the performance and demonstrate closure of the mission objectives of Daedalus, a mission concept targeting to perform in...journal article 2023
- document
-
Gas-surface interactions modelling influence on satellite aerodynamics and thermosphere mass densityMarch, G. (author), van den IJssel, J.A.A. (author), Siemes, C. (author), Visser, P.N.A.M. (author), Doornbos, Eelco N. (author), Pilinski, Marcin (author)The satellite acceleration data from the CHAMP, GRACE, GOCE, and Swarm missions provide detailed information on the thermosphere density over the last two decades. Recent work on reducing errors in modelling the spacecraft geometry has greatly reduced scale differences between the thermosphere data sets from these missions. However, residual...journal article 2021
- document
-
Palmroth, Minna (author), Grandin, Maxime (author), Sarris, Theodoros (author), Doornbos, Eelco (author), Tourgaidis, Stelios (author), March, G. (author), Siemes, C. (author), van den IJssel, J.A.A. (author), Visser, P.N.A.M. (author)<p>The lower-Thermosphere-ionosphere (LTI) system consists of the upper atmosphere and the lower part of the ionosphere and as such comprises a complex system coupled to both the atmosphere below and space above. The atmospheric part of the LTI is dominated by laws of continuum fluid dynamics and chemistry, while the ionosphere is a plasma...journal article 2021
- document
-
De Teixeira Da Encarnação, J. (author), Visser, P.N.A.M. (author), Arnold, Daniel (author), Bezdek, Ales (author), Doornbos, E.N. (author), Ellmer, Matthias (author), Guo, Junyi (author), van den IJssel, J.A.A. (author), Iorfida, E. (author)Although the knowledge of the gravity of the Earth has improved considerably with CHAMP, GRACE, and GOCE (see appendices for a list of abbreviations) satellite missions, the geophysical community has identified the need for the continued monitoring of the time-variable component with the purpose of estimating the hydrological and...journal article 2020
- document
-
Visser, T. (author), March, G. (author), Doornbos, E.N. (author), de Visser, C.C. (author), Visser, P (author)Thermospheric wind measurements obtained from linear non-gravitational accelerations of the Gravity field and steady-state Ocean Circulation Explorer (GOCE) satellite show discrepancies when compared to ground-based measurements. In this paper the cross-wind is derived from both the linear and the angular accelerations using a newly developed...journal article 2019
- document
-
Visser, T. (author), March, G. (author), Doornbos, E.N. (author), de Visser, C.C. (author), Visser, P.N.A.M. (author)Recently, the horizontal and vertical cross wind at 225- to 295-km altitude were derived from linear acceleration measurements of the Gravity field and steady-state Ocean Circulation Explorer satellite. The vertical component of these wind data is compared to wind data derived from the mass spectrometers of the Atmosphere Explorer C and E and...journal article 2019
- document
- March, G. (author), Doornbos, E.N. (author), Visser, P.N.A.M. (author) other 2018
- document
- Visser, T. (author), Doornbos, E.N. (author), de Visser, C.C. (author), Visser, P.N.A.M. (author), Fritsche, Bent (author) journal article 2018
- document
- March, G. (author), Visser, T. (author), Doornbos, E.N. (author), Iorfida, E. (author), van den IJssel, J.A.A. (author), Visser, P.N.A.M. (author) poster 2018
- document
-
Visser, T. (author), Doornbos, E.N. (author), de Visser, C.C. (author), Visser, P.N.A.M. (author)Because of the highly accurate accelerometers, the GOCE mission has proven to be a unique source of thermosphere neutral density and cross-wind data. In the current methods, in which only the horizontal linear accelerations are used, the vertical winds cannot be obtained. In the algorithm proposed in this paper, angular accelerations derived...poster 2017
- document
-
Visser, T. (author), Doornbos, E.N. (author), de Visser, C.C. (author), Visser, P.N.A.M. (author)Because of the highly accurate accelerometers, the GOCE mission has proven to be a unique source of thermosphere neutral density and cross-wind data. In the current methods, in which only the horizontal linear accelerations are used, the vertical winds cannot be obtained. In the algorithm proposed in this paper, angular accelerations derived...abstract 2017
- document
-
March, G. (author), Doornbos, E.N. (author), Visser, P.N.A.M. (author)Since 2000, accelerometers on board of the CHAMP, GRACE, GOCE and Swarm satellites have provided highresolution thermosphere density data, improving knowledge on atmospheric dynamics and coupling processes in the thermosphere-ionosphere layer. Most of the research has focused on relative changes in density. Scale differences between datasets and...poster 2017
- document
-
De Teixeira Da Encarnação, J. (author), Arnold, Daniel (author), Bezděk, Aleš (author), Dahle, Christoph (author), Doornbos, E.N. (author), van den IJssel, J.A.A. (author), Jäggi, Adrian (author), Mayer-Gürr, Torsten (author), Sebera, Josef (author), Visser, P.N.A.M. (author), Zehentner, Norbert (author)It is of great interest to numerous geophysical studies that the time series of global gravity field models derived from Gravity Recovery and Climate Experiment (GRACE) data remains uninterrupted after the end of this mission. With this in mind, some institutes have been spending efforts to estimate gravity field models from alternative...journal article 2016
- document
-
Visser, T. (author), Doornbos, E.N. (author), de Visser, C.C. (author), Visser, P.N.A.M. (author), Fritsche, B (author)In recent studies thermospheric densities and cross-winds have been derived from linear acceleration measurements of the gradiometer on board the GOCE satellite. Our current work is aimed at analyzing also the angular accelerations, in order to improve the thermosphere density and wind data by allowing for the estimation of more unknown...poster 2016
- document
-
Van den IJssel, J.A.A. (author), Visser, P.N.A.M. (author), Doornbos, E.N. (author), Meyer, U. (author), Bock, H. (author), Jäggi, A. (author)The state-of-the-art GOCE Satellite-to-Satellite Tracking Instrument (SSTI) delivers high-quality GPS data with an almost continuous 1 Hz data rate, which allows for very Precise Orbit Determination (POD). Despite this good performance, the GPS receiver shows occasional unexpected L2 tracking losses, which mainly occur close to the geomagnetic...conference paper 2011