Area measurements of apertures for exo-atmospheric solar irradiance for JPL

Maritoni Litorja; B. Carol Johnson; Joel Fowler

doi:10.1117/12.734578

12 October 2007 Area measurements of apertures for exo-atmospheric solar irradiance for JPL

Maritoni Litorja, B. Carol Johnson, Joel Fowler

Proceedings Volume 6677, Earth Observing Systems XII; 667708 (2007) https://doi.org/10.1117/12.734578
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

Abstract

A comparison of the area measurements of the limiting apertures used for total solar irradiance measurements in the Active Cavity Radiometer Irradiance Monitor II (ACRIM II) and Active Cavity Radiometer Irradiance Monitor III (ACRIM III) were conducted between the National Institute of Standards and Technology (NIST) and the Jet Propulsion Laboratory (JPL). The ACRIM apertures, due to their unique size and design, necessitated modifications to the NIST aperture measurement system. The changes and the validation procedures undertaken are described in this paper. This is part of an Earth Observing System (EOS)-sponsored international comparison of aperture area measurements of apertures that have institutional heritage with historical solar irradiance measurements.

Citation Download Citation

Maritoni Litorja, B. Carol Johnson, and Joel Fowler "Area measurements of apertures for exo-atmospheric solar irradiance for JPL", Proc. SPIE 6677, Earth Observing Systems XII, 667708 (12 October 2007); https://doi.org/10.1117/12.734578

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