Inference of Sea Surface Temperature, Near Surface Wind, and Atmospheric Water by Fourier Analysis of Scanning Multichannel Microwave Radiometer Data

  • P. W. Rosenkranz
Part of the Marine Science book series (MR, volume 13)


The Scanning Multichannel Microwave Radiometer measures thermal microwave emission from the earth in both polarizations at wavelengths of 0.8, 1.4, 1.7, 2.8 and 4.6 cm. Similar instruments were launched on Nimbus 7 and SEASAT. Both spatial resolution on the earth and relative sensitivity to different geophysical parameters change with wavelength. Therefore, spatial Fourier components of geophysical parameters are inferred from the corresponding Fourier components of the radiometer measurements, taking into account the different dependence of signal-to-noise ratio on spatial frequency for each radiometer wavelength. The geophysical parameters are sea surface temperature, near-surface wind speed, integrated water vapor mass, integrated liquid water mass, and the product of rainfall rate with height of the rain layer. The capabilities and limitations of the inversion method are illustrated by means of data from the North Atlantic and from tropical storms.


Liquid Water Rainfall Rate Liquid Water Content Geophysical Parameter Characteristic Radius 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Plenum Press, New York 1981

Authors and Affiliations

  • P. W. Rosenkranz
    • 1
  1. 1.Research Laboratory of ElectronicsMassachusetts Institute of TechnologyCambridgeUSA

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