Effects of field of view inhomogeneities on the rain estimation from microwave radiometry

Effects of field of view inhomogeneities on the rain estimation from microwave radiometry

We present a method to estimate the beamfilling correction factor for rain rates calculated from SSM/I data at 19 GHz, horizontal polarization. An application to a tropical situation is presented, where brightness temperatures vary typically from 175 K to 235K. We show the quantitative dependence of...

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Veröffentlicht in:International journal of remote sensing 1998, Vol.19 (1), p.211-215
Hauptverfasser: Klapisz, C., Viltard, N., Marecal, V.
Format: Artikel
Sprache:eng
Schlagworte:
Applied geophysics
Earth sciences
Earth, ocean, space
Exact sciences and technology
Hydrology
Hydrology. Hydrogeology
Internal geophysics
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Zusammenfassung:We present a method to estimate the beamfilling correction factor for rain rates calculated from SSM/I data at 19 GHz, horizontal polarization. An application to a tropical situation is presented, where brightness temperatures vary typically from 175 K to 235K. We show the quantitative dependence of this correction with the fraction of the field of view covered by rain. This leads to a correction factor in the range 1.5-3.
ISSN:0143-1161
1366-5901
DOI:10.1080/014311698216530