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Title

Equivalence of Pyrheliometric and Monochromatic Aerosol Optical Depths at a Single Key Wavelength

Authors
O'Neill, Norm
Published in Applied Optics. 1998, vol. 37, no. 30, p. 7008
Abstract The atmospheric aerosol optical depth (AOD) weighted over the solar spectrum is equal to the monochromatic AOD at a certain wavelength. This key wavelength is ~0.7 μm, which is only slightly influenced by air mass and aerosol content. On the basis of this result, simple relations are proposed to predict monochromatic AOD from pyrheliometric data and vice versa. The accuracy achieved is close to ∓0.01 units of AOD at ~0.7 μm, estimated from simultaneous sunphotometer data. The precision required for the estimation of the precipitable water-vapor content is approximately ∓0.5 cm.
Keywords Atmospheric aerosolSpectralBroadbandAtmospheric transmissionModelAerosol optical depth
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Research groups Systèmes énergétiques
ISE Pôle Sciences
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MOLINEAUX, Benoît, INEICHEN, Pierre, O'NEILL, Norm. Equivalence of Pyrheliometric and Monochromatic Aerosol Optical Depths at a Single Key Wavelength. In: Applied Optics, 1998, vol. 37, n° 30, p. 7008. https://archive-ouverte.unige.ch/unige:17210

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Deposited on : 2011-10-17

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