Earth Observation Research Center, National Space Development Agency of Japan
Center for Climate System Research, University of Tokyo
Department of Physical Meterology Research, Meterological Research Institute
School of Marine Science and Technology, Tokai University
Nagasaki Industrial Promotion Foundation, Nagasaki University
抄録
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.
Efficient use of an improved radiative transfer code to simulate near-global distributions of satellite-measured radiances
Nakajima2003OSA_H24P83.pdf
(2.79MB)
