Author(s)

Rajinder K. Jagpal^1,2, Rehan Siddiqui^1,2,3, Sanjar M. Abrarov^1,3,4, Brendan M. Quine^2,3,4

¹Epic College of Technology, Mississauga, Canada.
²Department of Physics and Astronomy, York University, Toronto, Canada.
³Department of Earth and Space Science and Engineering, York University, Toronto, Canada.
⁴Thoth Technology Inc., Algonquin Radio Observatory, Pembroke, Canada.

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.

Radiance Enhancement, Upwelling Radiance, Line-by-Line Computation, Radiative Transfer Model

Jagpal, R. , Siddiqui, R. , Abrarov, S. and Quine, B. (2022) Effect of the Instrument Slit Function on Upwelling Radiance from a Wavelength Dependent Surface Reflectance. Natural Science, 14, 133-147. doi: 10.4236/ns.2022.143013.