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GOCE+ AirDensity
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Project Reference


GOCE+ AirDensity

Air density and wind retrieval using GOCE data

Thematic Area
Solid Earth

200 - 300 K

Action Line
Novel Algorithms and Products

In Progress


Accelerometers , Gradiometer
Project Description

The main objective of this study is to derive algorithms to retrieve thermospheric density and winds using GOCE common-mode accelerations and DFAC data. Furthermore the algorithms shall be used to generate air density and wind products along the GOCE orbit and on grids. The objectives of this study are as follows:

  • To review the state-of-the-art in thermospheric density and wind retrieval using existing missions with accelerometers (such as GRACE and CHAMP).
  • To determine an aerodynamic macro-model for GOCE using precise drawings and surface properties of the satellite.
  • To define the required data sets from the satellite, including official GOCE Level 1b data sets and drag-free control actuation data, needed for the optimal determination of air density and wind profiles, along with all related algorithms and processing models.
  • To derive insitu air density/winds along the GOCE orbit using the sum of DFAC data and GOCE common-mode accelerations (a generic side-output will be a check of accelerometer calibration parameters by calculating biases and scales).
  • To derive calibrated state-of-the-art air density/wind models along the orbit by using GOCE air density data, e.g. to calibrate NRLMSISE-00 model and HWM-93 model.
  • To derive a GRACE/CHAMP calibrated air density/wind model and validate the GOCE air density/wind product at GOCE altitude and orbit position.
  • To make geophysical interpretations of the data and results.
  • To draw conclusions and give an outlook.
Project Consortium

Project Partners
TU Delft : Delft University of Technology, Netherlands (Prime contractor)
CNES : Centre National d'Etudes Spatiales, France (Subcontractor)
HTG : Hyperschall Technologie Göttingen, Germany (Subcontractor)
Contact Points

Project Manager
Eelco Doornbos
TU Delft
Faculty of Aerospace Engineering
Kluyverweg 1
2629 HS Delft
The Netherlands
Tel: +31 (0)15 2782086
Fax: +31 (0)15 2785322

Technical Officer
Michael Kern

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