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Howard W. Yoon (Fed)

Advancing spectroradiometry for improvements in fundamental and disseminated standards for spectral power responsivity, spectral radiance, spectral irradiance, radiance temperature, and solar energy.


U.S. expert on non-contact thermometry to the Consultative Committee for Thermometry

Member of IEC TC65/SC65B/WG5

Research projects:

Radiation thermometry
Spectroradiometry of sources
Photovoltaic calibrations


  • DOC Silver Award, 2008
  • Allen V. Astin Award, 2005
  • Allen V. Astin Award, 2004


Characterization and Absolute Calibration of an AERONET-OC Radiometer

B. Carol Johnson, Giuseppe Zibordi, Steven W. Brown, Michael Feinholz, Mikhail Sorokin, Ilya Slutsker, John T. Woodward IV, Howard Yoon
The Ocean Color component of the global Aerosol Robotic Network (AERONET-OC) utilizes CE-318 sun photometers modified for above-water radiometry from fixed

Nonlinear Response of Silicon Solar Cells

Behrang H. Hamadani, Andrew M. Shore, Howard W. Yoon, Mark Campanelli
We used an LED-array-based combinatorial flux addition method to explore the wavelength and the intensity-dependence of the spectral responsivity in silicon

Patents (2018-Present)

Created October 9, 2019, Updated December 8, 2022