Title :
Cloud properties retrieved from ADEOS/POLDER and OCTS
Author :
Yasumoto, M. ; Mukai, S. ; Sano, I.
Author_Institution :
Fac. of Sci. & Technol., Kinki Univ., Osaka, Japan
Abstract :
OCTS and POLDER sensors were mounted on the satellite ADEOS in August 1996. A procedure of cloud detection and distinction of a thermodynamic phase, i.e. water/ice-phase of cloud top, has been proposed based on the combination of ADEOS/POLDER and OCTS. In practice, the thermodynamic phase is distinguished by using polarized reflectance at 0.865 μm given by POLDER and brightness temperature at 10.9 μm by OCTS. Here, polarized reflectance at 0.670 μm and 0.865 μm by POLDER is used to retrieve the size distribution of water cloud particles. Molecular scattering in the atmosphere above the cloud is taken into account. It is shown that polarized reflectance at 0.443 μm is available to estimate the contribution of Rayleigh scattering by gas molecules. As a result, the altitude of the cloud tops and the effective radii of water cloud particles are obtained
Keywords :
atmospheric techniques; clouds; remote sensing; 0.443 micron; 0.670 micron; 0.865 micron; 10.9 micron; ADEOS OCTS data; ADEOS POLDER data; Rayleigh scattering; altitude; brightness temperature; cloud detection; cloud properties; gas molecules; molecular scattering; polarized reflectance; size distribution; thermodynamic phase; water cloud particles; water/ice-phase; Atmosphere; Brightness temperature; Clouds; Particle scattering; Phase detection; Polarization; Rayleigh scattering; Reflectivity; Satellites; Thermodynamics;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2001. IGARSS '01. IEEE 2001 International
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-7031-7
DOI :
10.1109/IGARSS.2001.976743
