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Efficient use of an improved radiative transfer code to simulate near-global distributions of satellite-measured radiances
- Source :
- Applied Optics; June 2003, Vol. 42 Issue: 18 p3460-3471, 12p
- Publication Year :
- 2003
-
Abstract
- Two new extension modules that give the water-leaving radiance from the ocean and the snow bidirectional reflectance distribution function were implemented in the latest radiative transfer code. In addition, to simulate the near-global distributions of satellite-measured radiances by using the improved radiative transfer code, we tested and applied the look-up table method together with the process-separation technique of the radiative transfer calculation. The computing time was reduced from 1 year to 20 s to simulate one channel, one scene of the Global Imager image by use of an Alpha 21164A-2 (600-MHz) machine. The error analyses showed that the radiances were simulated with less than 1% error for the nonabsorbing visible channels and ∼2% error for absorbing channels by use of this method.
Details
- Language :
- English
- ISSN :
- 1559128X and 21553165
- Volume :
- 42
- Issue :
- 18
- Database :
- Supplemental Index
- Journal :
- Applied Optics
- Publication Type :
- Periodical
- Accession number :
- ejs37383035