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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union

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doi:10.5194/amt-2017-91
© Author(s) 2017. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
18 Apr 2017
Review status
This discussion paper is under review for the journal Atmospheric Measurement Techniques (AMT).
Atmosphere Density Measurements Using GPS Data from Rigid Falling Spheres
Yunxia Yuan1, Nickolay Ivchenko1, Gunnar Tibert2, Marin Stanev3, Jonas Hedin3, and Jörg Gumbel3 1School of Electrical Engineering, Royal Institute of Technology KTH, Stockholm, Sweden
2School of Engineering Sciences, Royal Institute of Technology KTH, Stockholm, Sweden
3Department of Meteorology, Stockholm University, Stockholm, Sweden
Abstract. Atmospheric density profiles in the stratosphere and mesosphere are determined by means of low cost Global Positioning System (GPS) receivers on in situ rigid falling spheres released from a sounding rocket. Values below an altitude of 80 km are obtained. Aerodynamic drag relates atmospheric densities to other variables such as velocities of spheres, drag coefficients,and reference area.The densities are reconstructed by iterative solution. The calculated density is reasonably accurate, with deviation within 10 % with respect to the European Centre for Medium-range Weather Forecasts ( ECMWF) reference value. The atmospheric temperature and wind profiles are obtained as well, and compared to independent data.

Citation: Yuan, Y., Ivchenko, N., Tibert, G., Stanev, M., Hedin, J., and Gumbel, J.: Atmosphere Density Measurements Using GPS Data from Rigid Falling Spheres, Atmos. Meas. Tech. Discuss., doi:10.5194/amt-2017-91, in review, 2017.
Yunxia Yuan et al.
Yunxia Yuan et al.
Yunxia Yuan et al.

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Short summary
The paper presents a method to determine altitude profile of atmospheric density, temperature and wind by means of analysing the reconstructed trajectory of a rigid falling sphere released from a sounding rocket. The trajectory reconstruction is achieved by post-flight analysis of GPS raw data gathered in the sphere. A comparison of the results with independent measurements is presented, with good agreement of the falling sphere results with other sources in the stratosphere.
The paper presents a method to determine altitude profile of atmospheric density, temperature...
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