DOI: 10.1002/jgrd.50425
论文题名: A high-resolution near-infrared extraterrestrial solar spectrum derived from ground-based Fourier transform spectrometer measurements
作者: Menang K.P. ; Coleman M.D. ; Gardiner T.D. ; Ptashnik I.V. ; Shine K.P.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 11 起始页码: 5319
结束页码: 5331
语种: 英语
英文关键词: calibrated Fourier transform measurements
; extraterrestrial solar spectrum
; Langley method
; radiative transfer modeling
Scopus关键词: Atmospheric chemistry
; Bolometers
; Radiative transfer
; Spacecraft instruments
; Spectrometers
; Fourier transform spectrometers
; Infrared wavelengths
; Langley method
; Radiative transfer modeling
; Semiempirical models
; Significant differences
; Solar spectrum
; Total solar irradiance
; Solar radiation
; Fourier transform
; irradiance
; radiative transfer
; satellite imagery
; spectral resolution
; spectrometer
; wavelength
英文摘要: A detailed spectrally resolved extraterrestrial solar spectrum (ESS) is important for line-by-line radiative transfer modeling in the near-IR. Very few observationally based high-resolution ESS are available in this spectral region. Consequently, the theoretically calculated ESS by Kurucz has been widely adopted. We present the CAVIAR (Continuum Absorption at Visible and Infrared Wavelengths and its Atmospheric Relevance) ESS, which is derived using the Langley technique applied to calibrated observations using a ground-based high-resolution Fourier transform spectrometer (FTS) in atmospheric windows from 2000 to 10,000 cm-1 (1-5 μm). There is good agreement between the strengths and positions of solar lines between the CAVIAR and the satellite-based Atmospheric Chemistry Experiment-FTS ESS, in the spectral region where they overlap, and good agreement with other ground-based FTS measurements in two near-IR windows. However, there are significant differences in the structure between the CAVIAR ESS and spectra from semiempirical models. In addition, we found a difference of up to 8% in the absolute (and hence the wavelength-integrated) irradiance between the CAVIAR ESS and that of Thuillier et al., which was based on measurements from the Atmospheric Laboratory for Applications and Science satellite and other sources. In many spectral regions, this difference is significant, because the coverage factor k = 2 (or 95% confidence limit) uncertainties in the two sets of observations do not overlap. Because the total solar irradiance is relatively well constrained, if the CAVIAR ESS is correct, then this would indicate an integrated "loss" of solar irradiance of about 30 W m-2 in the near-IR that would have to be compensated by an increase at other wavelengths. © 2013. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63666
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Department of Meteorology, University of Reading, Earley Gate, Reading RG6 6BB, United Kingdom; National Physical Laboratory, Teddington, Middlesex, United Kingdom; V.E. Zuev Institute of Atmospheric Optics, SB RAS, 1, Academician Zuev Square, Tomsk, Russian Federation
Recommended Citation:
Menang K.P.,Coleman M.D.,Gardiner T.D.,et al. A high-resolution near-infrared extraterrestrial solar spectrum derived from ground-based Fourier transform spectrometer measurements[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(11)