Publication Abstracts
Van Deelen et al. 2008
Van Deelen, R., O.P. Hasekamp, , 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={Journal of Geophysical Research},
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. JO - Journal of Geophysical Research VL - 113 SP - D12204 DO - 10.1029/2007JD009129 ER -
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