Articles | Volume 9, issue 9
https://doi.org/10.5194/amt-9-4673-2016
https://doi.org/10.5194/amt-9-4673-2016
Research article
 | 
21 Sep 2016
Research article |  | 21 Sep 2016

The Zugspitze radiative closure experiment for quantifying water vapor absorption over the terrestrial and solar infrared – Part 2: Accurate calibration of high spectral-resolution infrared measurements of surface solar radiation

Andreas Reichert, Markus Rettinger, and Ralf Sussmann

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Short summary
Quantitative knowledge of infrared absorption by water vapor is crucial for remote sensing and climate simulations. Near-infrared (NIR) continuum absorption currently still lacks quantification by atmospheric measurements but can be investigated with radiative closure experiments using radiometrically calibrated solar spectra. We demonstrate for the first time a calibration method with sufficient accuracy (1.0–1.7 %) for continuum quantification in the 2500 to 7800 cm−1spectral range.