Removing thin cirrus cloud effects in Hyperion data using the 1.38 and 1.87 μm water vapor absorption bands

The 1.375 μm channel on MODIS in the water absorption band can be used to correct for path radiance from thin cirrus in the VNIR spectral region and is particularly useful for NDVI correction. The 1.87 μm water vapor absorption feature is 3 times as wide and more intense than the 1.375 μm band and potentially less subject to interference from surface reflectance when the column precipitable water vapor is less than 1 cm. We can show both model calculations and image examples from Hyperion, in tropical and mid-latitude regions, that data from the 1.87 μm band can be used to correct for path radiance from thin cirrus in the VNIR region.