Summary
A simple method of retrieving water vapor and liquid water content is presented and validated by applying the Special Sensor Microwave/Imager data using ground truth data from Japan. The method is based on an iterative technique which uses model functions of relating two geophysical parameters to brightness temperature. Water vapor is found by a model function of relating water vapor content to brightness temperature at 22.235 GHz. Liquid water content is found by two model functions. One function defines a level of clear sky condition, and the other gives a ratio of liquid water content to brightness temperature increased from clear sky conditions. The retrieved water vaporcontent is compared with upper air observations at Chichijima Island. The rms of errors is estimated at 3.3 Kg m−2. The retrieved liquid water content is related to monthly precipitation observed at Chichijima Island, and a correlation coefficient of 0.68 is obtained.
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Alishouse, J. C., Snider, J. B., Westwater, E. R., Swift, C. T., Ruf, C. S., Snyder, S. A., Vongsathorn, J., Ferraro, R. R., 1990: Determination of cloud liquid water content using the SSM/I.IEEE Trans. Geosci. Remote Sensing,28, 817–822.
Chang, A. T. C., Wilheit, T. T., 1979: Remote sensing of atmospheric water vapor, liquid water, and wind speed at the ocean surface by passive microwave techniques from the Nimbus 5 satellite.Radio Science,14, 793–802.
Hollinger, J. P., Lo, R. C., Poe, G. A., Savage, R. C., Peirce, J. L., 1987: Special Sensor Microwave/Imager User's Guide. Naval Research Laboratory.
Hollinger, J. P., 1989: DMSP Special Sensor Microwave/Imager Calibration and Validation Final Report, vol. 1. Naval Research Laboratory, DMSP SSM/I, Cal/Val Team.
Hollinger, J. P., 1991: DMSP Special Sensor Microwave/Imager Calibration and Validation Final Report, vol. 2. Naval Research Laboratory, DMSP SSM/I Cal/Val Team.
Klein, L. A., Swift, C. T., 1977: An improved model for the dielectric constant of sea water at microwave frequencies.IEEE Trans. Antennas and Propagation,AP-25, 104–111.
Liebe, H. J., 1981: Modeling attenuation and phase of ratio waves in air at frequencies below 1000 GHz.Radio Science,16, 1183–1199.
Liebe, H. J., 1983: Atmospheric EHF window transparencies near 35, 90, 140, and 220 GHz.IEEE Transactions on Antennas and Propagation,AP-31, 127–135.
Liebe, H. J., 1985: An updated model for millimeter wave propagation in moist air.Radio Science,20, 1069–1089.
Liu, W. T., Tang, W., Wentz, F. J., 1992: Precipitable water vapor and surface humidity over global oceans from Special Sensor Microwave Imager and European Center from Medium Range Weather Forecasts.J. Geophys. Res.,97,C2, 2251–2264.
Swift, C. T., 1980: Passive microwave remote sensing of the ocean—a review.Bound. Layer Meteor.,18, 25–54.
Waters, J. W., 1976: Absorption and Emission by atmospheric bases. In: Fava, R. A. (ed.),Methods of Experimental Physics 16B. New York: Academic Press.
Wentz, F. J., Mattox, L. A., Peteherych, S., 1986: New algorithms for microwave measurements of ocean winds: Applications to seasat and special sensor microwave imager.J. Geophys. Res. 91, C2, 2289–2307.
Wentz, F. J., 1989: User's manual SSM/I geophysical tapes.Remote Sensing Systems, California.
Wentz, F. J., 1992: Measurement of oceanic wind vector using satellite microwave radiometers.IEEE Trans. Geosci. Remote Sensing,30, 960–972.
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Shibata, A. Determination of water vapor and liquid water content by an iterative method. Meteorl. Atmos. Phys. 54, 173–181 (1994). https://doi.org/10.1007/BF01030058
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DOI: https://doi.org/10.1007/BF01030058