SOLAR-HRS: High-resolution extraterrestrial solar Reference Spectra for disk-integrated, disk-center, and intermediate cases
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Accurate knowledge of the solar spectrum and its chemical composition represent essential data for solar physics, astronomy, cosmology, and geophysics. The determination of high-resolution solar reference spectra (disk-integrated, disk-center, or intermediate cases) is fundamental and represents key inputs for interpreting remote sensing measurements that uses sunlight. In this work, we present several new solar irradiance reference spectra at high resolution representative of solar minimum conditions. The High-resolution extraterrestrial solar Reference Spectra (HRS disk-integrated) is developed by normalizing high spectral resolution solar line data to the absolute irradiance scale of the SOLAR-ISS reference spectrum. The resulting HRS disk-integrated solar spectrum has a spectral resolution varying between 1.0 and ∼0.001 nm in the 0.5 – 4400 nm wavelength range. We have also developed a solar HRS disk-center solar spectrum, which spans 650 – 4400 nm at 0.02 to ∼ 0.001 nm spectral resolution. We implemented several solar spectra (HRS intermediate cases) for ten different solar view-angles from μ = 0.9 to μ = 0.05. Finally, we developed several spectra (disk center and disk-Integrated spectrum) based on solar modeling (MPS-ATLAS based on Kurucz solar linelists and Vald3 solar linelists).
精准掌握太阳光谱及其化学组成，是太阳物理学、天文学、宇宙学与地球物理学领域的核心基础数据。高分辨率太阳参考光谱（包括全日面积分光谱、日面中心光谱及中间观测情形）的确定，是解读利用太阳光开展的遥感探测数据的核心基础环节，亦是关键输入参数。本研究中，我们发布了多组适用于太阳活动极小期的新型高分辨率太阳辐照度参考光谱。高分辨率地外太阳参考光谱（全日面积分型，HRS disk-integrated）通过将高光谱分辨率太阳谱线数据归一化至SOLAR-ISS参考光谱的绝对辐照度标度而构建完成。所得到的全日面积分型HRS太阳光谱，在0.5~4400 nm的波长范围内，光谱分辨率介于1.0 nm至约0.001 nm之间。我们同时构建了HRS日面中心太阳光谱，其覆盖波长范围为650~4400 nm，光谱分辨率介于0.02 nm至约0.001 nm之间。我们还针对μ取值从0.9至0.05的10种不同太阳观测天顶角，构建了多组HRS中间情形太阳光谱。最后，我们基于太阳模型（采用基于Kurucz太阳谱线表与Vald3太阳谱线表的MPS-ATLAS模型）构建了多组光谱（包括日面中心光谱与全日面积分光谱）。
