| Summary: | The amount of radiation reaching the surface decreasing by the existence of atmospheric aerosols, hence increase the fraction of radiation by diffuse mechanism. The rate of photosynthesis in plants is significantly influenced by the amount and type of irradiance incident on the plants. The increasing of the ratio of diffuse irradiance to global irradiance can accelerate photosynthesis, thereby will increase plant productivity. As aerosol plays a significant role in Earth's radiation budget through radioactive forcing and chemical perturbation that affect the photosynthesis process. Measurement of photosynthetic activity radiation can be retrieved from satellite-based platform and derived from radiative transfer model. The uses of MODIS (Moderate Resolution Imaging Spectroradiometer) will be acted as an input into the model to calculate the ratio of diffuse to global irradiance at the Earth's surface. To quantify these two radiative influences of aerosols, the application of model will be compared to estimate the impact on yield of crop productivity for Southeast Asia country. In this study, MODIS will be performed in measurement of diffuse to global irradiance values in large scale. The use of remote sensing data can provide large scale coverage and high resolution. Furthermore, a new geospatial database of paddy rice productivity will be developed and upgraded. The measurement of the ratio of diffuse-to-global irradiance can increase the precision of prediction the changes in the plant productivity. Thus, enable to enhance the yield of plant induced by atmospheric aerosol loading variability. The abilities to estimate paddy-rice productivity from remote sensing approach is not only fundamental for precision agriculture but can also be very useful to governmental administrators for food provisions management. © 2010 IEEE.
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