Vasilyev O B, Leyva A, Muhila A, Valdes M, Peralta R, Kovalenko A P, Welch R M, Berendes T A, Isakov V Y, Kulikovskiy Y P, Sokolov S S, Strepanov N N, Gulidov S S, von Hoyningen-Huene W
Appl Opt. 1995 Jul 20;34(21):4426-36. doi: 10.1364/AO.34.004426.
A spectroradiometer with wedge interference filters (SWIF) (the filters were produced by Carl Zeiss, Jena, Germany) and a CCD matrix (which was of Russian production) that functions as the sensor has been designed and built for use in ground-based optical sensing of the atmosphere and the Earth's surface in the spectral range of 0.35-1.15 µm. Absolute calibration of this instrument was performed through a series of observations of direct solar radiation at Mauna Loa Observatory (MLO) in Hawaii in May and June 1993. Spectral optical depth (SOD) measurements that were made during these field experiments provided detailed spectral information about both aerosol extinction (scattering plus absorption) and molecular absorption in the atmosphere above the site at MLO. The aerosol-SOD measurements were compared with narrow-band radiometer measurements at wavelengths of 380, 500, and 778 nm The SWIF and narrow-band radiometer measurements are in agreement to within the experimental error. At a wavelength of 500 nm, the aerosol SOD was found to be approximately 0.045. Adescription of the SWIF instrument, its absolute calibration, and the determination of atmospheric SOD's at MLO are presented.
已设计并制造了一种带有楔形干涉滤光片的光谱辐射计（SWIF）（滤光片由德国耶拿的卡尔·蔡司公司生产）以及用作传感器的CCD矩阵（俄罗斯生产），用于在0.35 - 1.15 µm光谱范围内对大气和地球表面进行地面光学传感。该仪器的绝对校准是通过1993年5月和6月在夏威夷莫纳罗亚天文台（MLO）对太阳直接辐射进行的一系列观测来完成的。在这些野外实验期间进行的光谱光学深度（SOD）测量提供了有关莫纳罗亚天文台站点上方大气中气溶胶消光（散射加吸收）和分子吸收的详细光谱信息。将气溶胶SOD测量结果与380、500和778 nm波长处的窄带辐射计测量结果进行了比较。SWIF和窄带辐射计的测量结果在实验误差范围内一致。在500 nm波长处，发现气溶胶SOD约为0.045。本文介绍了SWIF仪器、其绝对校准以及在莫纳罗亚天文台测定大气SOD的情况。
