Publication Abstracts

Van Deelen et al. 2008

Van Deelen, R., O.P. Hasekamp, B. van Diedenhoven, and J. J. Landgraf, 2008: Retrieval of cloud properties from near-ultraviolet, visible, and near-infrared satellite-based Earth reflectivity spectra: A comparative study. J. Geophys. Res., 113, D12204, doi:10.1029/2007JD009129.

In this study, we investigate the capability to retrieve cloud parameters from near-ultraviolet, visible, and near-infrared satellite-based reflectivity measurements. These parameters are essential to enable trace gas retrievals for cloud-contaminated satellite scenes. We compare the retrieval of cloud top pressure, cloud fraction, and cloud optical thickness from simulated reflectivity measurements in three wavelength ranges: (1) 350-400 nm, which includes pronounced Ring effect structures; (2) 460-490 nm; and (3) 755-775 nm, which contain absorption features of O2-O2 and O2, respectively. Retrieval simulations are performed for both a typical noise level of present-day space-borne spectrometers and additional random-like measurement biases. Furthermore, we investigated the importance of the spectral continuum for the retrieval of cloud properties. It is found that reflectivity measurements in the wavelength ranges 350-400 and 755-775 nm provide complementary information on cloud properties. Both spectral windows provide more information on clouds than the 460-490 nm window. The best results are obtained for the combination of the 350-400 and 755-775 nm windows. In this case all three cloud parameters can be retrieved independently, and a high robustness is obtained with respect to random-like measurement biases. Here it is not required to resolve the Ring effect structures in the near-ultraviolet window. For this combination of spectral windows the error on retrieved NO2 columns is reduced considerably.

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BibTeX Citation

@article{va07000g,
  author={van Deelen, R. and Hasekamp, O. P. and van Diedenhoven, B. and J. Landgraf, J.},
  title={Retrieval of cloud properties from near-ultraviolet, visible, and near-infrared satellite-based Earth reflectivity spectra: A comparative study},
  year={2008},
  journal={J. Geophys. Res.},
  volume={113},
  pages={D12204},
  doi={10.1029/2007JD009129},
}

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RIS Citation

TY  - JOUR
ID  - va07000g
AU  - van Deelen, R.
AU  - Hasekamp, O. P.
AU  - van Diedenhoven, B.
AU  - J. Landgraf, J.
PY  - 2008
TI  - Retrieval of cloud properties from near-ultraviolet, visible, and near-infrared satellite-based Earth reflectivity spectra: A comparative study
JA  - J. Geophys. Res.
VL  - 113
SP  - D12204
DO  - 10.1029/2007JD009129
ER  -

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