ZHANG Yu-xiang~1, LI Xiao-jing~1, GU Xing-fa~. Estimation of Water Vapor Amount over Beijing from Sun Photometer Measurements[J]. Journal of Remote Sensing, 2006, (5): 749-755. DOI: 10.11834/jrs.200605111.
Based on measurements on 936nm water-vapor band and 870nm atmospheric window band for CE318 sun photometer
A method of water vapor amount estimation by an improved Langley plot is presented.Calibration of CE318 sun photometer and calculation of water vapor amount are also described.The results of calibration of the water vapor exhibited that its linear relativity is 0.986 and the uncertainty is 0.024g/cm
2
.The results of the water vapor amounts in 2002—2004 indicated that they are all less than 0.5g/cm
2
from Jan.(Nov.) to Mar.(Dec.) over Beijing atmosphere.An agreement is occurred to monthly average values of water vapor amounts year by year.