17 October 2014 Spectral reference line data relevant to remote sensing applications: a review and outline of the EUMETRISPEC project
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Abstract
Within the European Metrology Research Programme (EMRP)1 the EUMETRISPEC joint research project was focused on metrological aspects of spectral reference line data2 as presented earlier3. We review EUMETRISPEC’s first funding through the EMRP and the outcome of this metrology effort to support the line data and the atmospheric remote sensing community. We describe current examples from the EMRP project to address present deficiencies of available line data. Key points of this project were the development of an open European hardware infrastructure for traceable spectral reference data and the development of standardized procedures to measure traceable molecular spectral line data. The paper describes the development of a spectroscopy infrastructure based on a Bruker IFS 125 HR high-resolution Fourier- Transform Infrared (FTIR) spectrometer, discusses the achieved results on molecular line parameters (e.g. line strengths and pressure broadening coefficients) of the greenhouse gas species CO2 and CO. Here, metrology aims to provide its additional input in terms of improved quality management, detailed uncertainty assessments and ultimately traceable spectral data linked to the SI units wherever tightened data quality objectives and improved data quality are required for certain remote sensing applications. In this paper we show how metrology efforts support this goal by means of spectroscopy infrastructure. An outline of future activities is given promoting the discussion with the remote sensing community and fostering improved links to the metrology community.
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O. Werhahn, J. Brunzendorf, J. Nwaboh, A. Serdyukov, Viktor Werwein, V. Ebert, "Spectral reference line data relevant to remote sensing applications: a review and outline of the EUMETRISPEC project", Proc. SPIE 9242, Remote Sensing of Clouds and the Atmosphere XIX; and Optics in Atmospheric Propagation and Adaptive Systems XVII, 92420D (17 October 2014); doi: 10.1117/12.2067358; https://doi.org/10.1117/12.2067358
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