Gardiner, T D; Coleman, M D; Browning, H; Tallis, L*; Ptashnik, I V*; Shine, K P* (2012) Absolute high spectral resolution measurements of surface solar radiation for detection of water vapour continuum absorption. Philos. Trans. R. Soc. Lond. A, Math. Phys. Eng. Sci., 370 (1968). pp. 2590-2610.

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Abstract

A solar-pointing high-resolution FTIR spectrometer was deployed as part of the 'Continuum Absorption by Visible and Infrared radiation and its Atmospheric Relevance' (CAVIAR) consortium project. This paper describes the radiative calibration process using an Ultra-High Temperature Blackbody and the consideration of the related influence factors. The result is a radiatively calibrated measurement of the solar irradiation at the ground across the infrared region from 2,000 cm-1 to 10,000 cm-1 with an uncertainty of between 3.3 % and 5.9 %. This measurement is shown to be in good general agreement with a radiative transfer model. The results from the CAVIAR field measurements are being used in ongoing studies of atmospheric absorbers, in particular the water vapour continuum.

Item Type:	Article
Keywords:	Fourier Transform Infrared spectroscopy, radiative calibration, solar irradiation, atmospheric water vapour
Subjects:	Environmental Measurement Environmental Measurement > Atmospheric Science, Emission and Security
Identification number/DOI:	10.1098/rsta.2011.0221
Last Modified:	02 Feb 2018 13:14
URI:	http://eprintspublications.npl.co.uk/id/eprint/5427

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