How to calculate exoatmospheric irradiance from spectral responce?

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Israel Ropo Orimoloye

Kindly check the useful links below;

https://landsat.usgs.gov/esun

https://apollomapping.com/wp-content/user_uploads/2011/09/IKONOS_Esun_Calculations.pdf

https://landsat.usgs.gov/where-can-i-find-solar-exoatmospheric-spectral-irradiances-esun-values-landsat-8-oli-data

Wishes

Joseph A Shaw

Don't forget that to determine exoatmospheric irradiance you would need not just the instrument spectral response, but also measurements made outside the atmosphere (or the spectrum of atmospheric transmittance).