2006 · 57 citations · 5 references
Natural SciencesEarth SciencesMeteorologyAtmospheric ScienceCloud MonitoringRemote SensingCloud Optical PropertiesCloud PropertiesCloud Remote SensingCloud StructureInfrared Remote SensingSurface Temperature RetrievalCloud Mask ValidationCloud Optical Property ParameterizationCloud Optical Thickness RetrievalCloud Phase DeterminationCloud Radiative Property RetrievalCloud Top Temperature RetrievalPhase RetrievalReflectance
• Cloud phase algorithm. Shortwave Infrared (SWIR) reflectance ratio thresholds have been updated. The shorter wavelength (approximately non-absorbing) band used to define the ratio now depends on the underlying surface type. A separate set of thresholds is used for snow and ice surfaces, as well as for optically thick clouds. Also for Collection 005, SWIR ratio tests are only run when the cloud is thought to be thick enough to cause appreciable liquid/ice SWIR absorption differences. Logic for incorporating the IR phase retrieval result has been modified, in particular the use of the 1.38 μm cloud mask test for undetermined phase clouds. Sanity checks for cold clouds (force to ice phase when cloud top temperature Tcloud top 273 K then set to liquid water) was retained but only when SWIR ratio tests are used. [For detailed logic flow, see Diagrams 1, 2, and 3 at end of document.]
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Extraterrestrial Solar Spectrum, 3000–6100 Å at 1-Å Intervals
Matthew P. Thekaekara · Applied Optics · 1974 · 195 citations
Eric G. Moody, Michael D. King, Crystal Schaaf et al. · Remote Sensing of Environment · 2007 · 127 citations