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Atmos. Meas. Tech., 6, 981-990, 2013
https://doi.org/10.5194/amt-6-981-2013
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
15 Apr 2013
Note on rotational-Raman scattering in the O2 A- and B-bands
A. Vasilkov1, J. Joiner2, and R. Spurr3 1Science Systems and Applications Inc., Lanham, MD, USA
2NASA Goddard Space Flight Center, Greenbelt, MD, USA
3RT Solutions Inc., Cambridge, MA, USA
Abstract. Quantifying the impact of rotational-Raman scattering (RRS) on the O2 A- and B-bands is important as these bands can be used for cloud and aerosol characterization for trace-gas retrievals including CO2 and CH4. In this paper, we simulate the spectral effects of RRS for various viewing geometries and instruments with different spectral resolutions. We also examine how aerosols affect the amount of RRS filling-in. We show that the filling-in effects of RRS are relatively small, but not negligible, in these O2 absorption bands, particularly for high-spectral-resolution instruments. For comparison, we also compare and contrast the spectral signatures of RRS with those of terrestrial chlorophyll fluorescence.

Citation: Vasilkov, A., Joiner, J., and Spurr, R.: Note on rotational-Raman scattering in the O2 A- and B-bands, Atmos. Meas. Tech., 6, 981-990, https://doi.org/10.5194/amt-6-981-2013, 2013.
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