منابع مشابه
Geometric Cloud Heights from Meteosat and Avhrr
Geometric cloud height estimation provides an alternative to cloud top temperature methods if two satellites view the same cloud. First we demonstrate the stereo cloud height derivation with a combination of Meteosat 7 and Meteosat 5 5 km resolution Infrared data. Comparison with the temperature technique shows consistency in the majority of the clouds, but some differences. This demonstrates t...
متن کاملAssigning Heights to Cloud Motion Vectors
Satellite derived cloud motion vector (CMV) production has been troubled by inaccurate height assignment of cloud tracers, especially in thin semi-transparent clouds. This paper presents the results of an intercomparison of operational height assignment techniques. Heights are assigned by one of three techniques when the appropriate spectral radiance measurements are available: the infrared win...
متن کاملComparisons of Cloud Heights Derived from Satellite and Atmospheric Radiation Measurement Surface Lidar Data
Cloud heights derived from single-channel, satellite infrared data can be relatively uncertain under certain conditions such as overlapped or optically thin clouds. During the daytime, optical depths derived from 0.63 μm visible (VIS) reflectances are used to adjust the altitude of optically thin clouds. Without the adjustment, the cloud heights are significantly underestimated diminishing the ...
متن کاملJp1.28 Examination of Viewing Zenith Angle Dependence on Cloud Heights Derived from Thermal Infrared Satellite Observations
Narrow spectral bands in the thermal infrared (IR) atmospheric window (10-12 μm) are commonly used to derive cloud top heights from passive satellite imagers (Minnis et al., 1998). When the field-of-view (FOV) of a satellite imager, such as the Moderate Resolution Imaging Spectroradiometer (MODIS), is completely cloud-filled, the observed brightness temperature at a particular band Tλ can be ma...
متن کاملIntercomparison of multiple years of MODIS, MISR and radar cloud-top heights
Radar cloud-top heights were retrieved at both the Chilbolton Facility for Atmospheric and Radio Research, UK (CFARR) and the ARM Southern Great Plain site, USA (SGP), using millimetre wave cloud radars and identical algorithms. The resulting cloud-top heights were used for comparison with MODIS and MISR retrieved cloud-top heights, from March 2000 to October 2003. Both imaging instruments resi...
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ژورنال
عنوان ژورنال: Science
سال: 1887
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.ns-10.233.46