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Probing internal cloud properties from space

Thomas Wagner(1), Steffen Beirle(1), Tim Deutschmann(1), Michael Grzegorski(1), Suniti Sanghavi(1) and Ulrich Platt(1)

(1) Uni-Heidelberg, INF 229, D-69120 Heidelberg, Germany


Novel UV/vis satellite instruments measure the backscattered solar radiation with moderate spectral resolution (FWHM 0.2 – 0.4 nm). Thus, in addition to the observation of the broad band radiance, they also allow to retrieve the spectral signatures of many atmospheric trace gases and of rotational Raman-scattering (the so called Ring effect). For trace gases with known (and constant) atmospheric concentrations like molecular oxygen and its dimer O4, it is in particular possible to derive information on the atmospheric light path distribution. This information is complemented by the analysis of the Ring effect. We present simultaneous measurements of the Ring effect and the O4 and O2 absorptions for different cloudy scenes and give estimates of the light path distributions inside the clouds.


Full paper

Keywords: ESA European Space Agency - Agence spatiale europeenne, observation de la terre, earth observation, satellite remote sensing, teledetection, geophysique, altimetrie, radar, chimique atmospherique, geophysics, altimetry, radar, atmospheric chemistry