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arXiv · 2104.07126

Effect of the instrument slit function on upwelling radiance from a wavelength dependent surface reflectance

Rajinder K. Jagpal·Rehan Siddiqui·Sanjar M. Abrarov·Brendan M. Quine
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Abstract

The Radiance Enhancement (RE) method was introduced for efficient detection of clouds from the space. Recently, we have also reported that due to high reflectance of combustion-originated smokes, this approach can also be generalized for detection of the forest fires by retrieving and analyzing datasets collected from a space orbiting micro-spectrometer operating in the near infrared spectral range. In our previous publication, we have performed a comparison of observed and synthetic radiance spectra by developing a method for computation of surface reflectance consisting of different canopies by weighted sum based on their areal coverage. However, this approach should be justified by a method based on corresponding proportions of the upwelling radiance. The results of computations we performed in this study reveal a good match between areal coverage of canopies and the corresponding proportions of the upwelling radiance due to effect of the instrument slit function.

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Rajinder K. Jagpal, Rehan Siddiqui, Sanjar M. Abrarov, Brendan M. Quine. 2021-04-14. Effect of the instrument slit function on upwelling radiance from a wavelength dependent surface reflectance. https://doi.org/10.4236/ns.2022.143013

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