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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union
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Preprints
https://doi.org/10.5194/amt-2016-98
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/amt-2016-98
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

  23 May 2016

23 May 2016

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This preprint has been withdrawn by the authors.

Measurement of limb radiance and Trace Gases in UV over Tropical region by Balloon-Borne Instruments – Flight Validation and Initial Results

A. G. Sreejith, Joice Mathew, Mayuresh Sarpotdar, K. Nirmal, Ambily Suresh, Ajin Prakash, Margarita Safonova, and Jayant Murthy A. G. Sreejith et al.
  • Indian Institute of Astrophysics, Bangalore, India

Abstract. We describe a method to measure the solar scattered UV radiance and trace gases in the upper troposphere and stratosphere using a spectrograph carried by high-altitude balloons. The flights have been conducted over tropical regions near urban areas. The instrumentation was developed using off-the-shelf components and can be easily reproduced. We describe the design of the instrument, its operation in flight and discuss some flight result. Observations of the scattered solar radiance were performed by looking towards the Earth's limb at Sun angles of more than 90 degrees at altitudes of 10 to 29 km. This method allows us to estimate the variation of the scattered UV solar radiance with height. It also can be used to measure the column densities in the upper atmosphere.

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A. G. Sreejith et al.

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A. G. Sreejith et al.

A. G. Sreejith et al.

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