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Charles Gibson (Fed)


Charles Gibson is a physicist in the NIST Sensor Science Division.  He has worked on various measurement science programs since coming to NIST in 1986.  Charles realizes and maintains the US National Scales for spectral irradiance, spectral radiance, UV spectral irradiance, radiance temperature, low radiance temperature, high-heat flux in support of climate and environmental measurements, remote sensing, aerospace, product manufacturing, NASA, NOAA, DOD, and DOE.

These scales are disseminated thru the NIST calibration service program via NIST-supplied lamps or customer-supplied integrating sphere sources, radiation thermometers, heat flux transducers, and blackbody sources.  These US National Scales are recognized as being the best in the world validated by inter-laboratory comparisons with other National Metrology Institutes.

Charles is active in several international committees for optical radiation measurement. He is a member of ASTM E20 Committee on Temperature Measurement and the ASTM E21.08 Subcommittee on Thermal Protection.  He is also a co-convener of ISO/TC121/SC3-IEC62D/JWG8/PT9 Joint Committee on Clinical Thermometers.

Research projects

Radiation thermometry
Spectroradiometry of sources


Charles is a group-recipient of the 2008 Department of Commerce Silver Medal Award for Scientific/Engineering Achievement for advancing ultraviolet radiation measurement science for applications in materials processing, semiconductor manufacturing, and space sciences. He is also a co-recipient of the 2005 NIST Allen V. Astin Measurement Science Award for major advances in the realization and dissemination of the NIST spectral irradiance scale widely used in climate research.


SP250 Spectral Irradiance Calibrations

Howard W. Yoon, Charles E. Gibson
This document describes the process of the realization, the maintenance and the dissemination of the spectral irradiance scale and its accompanying
Created October 9, 2019, Updated June 15, 2021