Analysis of far-infrared spectral radiance observations of the water vapor continuum in the Arctic

作者：Fox Cathryn^*; Green Paul D; Pickering Juliet C; Humpage Neil

来源：Journal of Quantitative Spectroscopy and Radiative Transfer, 2015, 155: 57-65.

DOI：10.1016/j.jqsrt.2015.01.001

• Far-infrared
• Spectroscopy
• Water vapor continuum
• Radiation

The Radiative Heating in Underexplored Bands Campaign (RHUBC) took place in Barrow, Alaska, in February and March 2007. During RHUBC, high resolution far-infrared spectra were measured simultaneously and independently by two different spectrometers - the Imperial College Tropospheric Airborne Fourier Transform Spectrometer (TAFTS) and the Atmospheric Radiation Measurement program (ARM) Atmospheric Emitted Radiance Interferometer - Extended Range (AERI-ER). Co-incidental far-infrared downwelling radiance measurements from the two instruments show good agreement within their overlapping wavenumber measurement range (400-550 cm(-1)). Radiance measurements taken using the TAFTS instrument are compared to the current Mlawer-Tobin-Clough-Kneizys-Davies (MT-CKD) version 2.5 water vapor continuum parameterization for the spectral range 350-500 cm(-1) (20-29 mu m). Simulated values agree with the TAFTS observations within uncertainties, enhancing confidence that MT-CKD 2.5 accurately represents the foreign-broadened water vapor continuum in this crucial spectral region.

• 出版日期2015-4