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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union
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Volume 4, issue 5 | Copyright

Special issue: Atmospheric remote sensing using limb observations

Atmos. Meas. Tech., 4, 893-907, 2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 18 May 2011

Research article | 18 May 2011

Retrieval of temperature and pressure using broadband solar occultation: SOFIE approach and results

B. T. Marshall1, L. E. Deaver1, R. E. Thompson1, L. L. Gordley1, M. J. McHugh1, M. E. Hervig2, and J. M. Russell III3 B. T. Marshall et al.
  • 1GATS, Inc., 11864 Canon Blvd., Suite 101, Newport News, VA, 23606, USA
  • 2GATS, Inc., 65 South Main St., Suite 5, Driggs, ID, 83422, USA
  • 3Center for Atmospheric Sciences at Hampton University, 23 Tyler St., Hampton, VA, 23668, USA

Abstract. Measurement of atmospheric temperature as a function of pressure, T(P), is key to understanding many atmospheric processes and a prerequisite for retrieving gas mixing ratios and other parameters from solar occultation measurements. This paper gives a brief overview of the solar occultation measurement technique followed by a detailed discussion of the mechanisms that make the measurement sensitive to temperature. Methods for retrieving T(P) using both broadband transmittance and refraction are discussed. Investigations using measurements of broadband transmittance in two CO2 absorption bands (the 4.3 and 2.7 μm bands) and refractive bending are then presented. These investigations include sensitivity studies, simulated retrieval studies, and examples from SOFIE.

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