Faculty of Health, Engineering and Sciences, University of Southern Queensland, Toowoomba, Qld, Australia.
Photochem Photobiol. 2017 Oct;93(5):1289-1293. doi: 10.1111/php.12784. Epub 2017 Jul 27.
This research reconstructed and validated the broadband UVA irradiances derived from discrete spectral irradiance data retrieved from the Ozone Monitoring Instrument (OMI) satellite from 1 January to 31 December 2009. OMI data at solar noon were compared to ground-based spectral irradiances at Toowoomba (27°36' S 151°55' E), Australia, at 310, 324 and 380 nm for both cloud-free and all sky conditions. There was a strong relationship between the ground-based UV spectroradiometer data and satellite-based measurements with an R of 0.89 or better in each waveband for cloud-free days. The data show an overestimate of the satellite-derived spectral irradiances compared to the ground-based data. The models developed for the subtropical site data account for this overestimation and are essential for any data correlation between satellite- and ground-based measurements. Additionally, this research has compared solar noon broadband UVA irradiances evaluated with a model and the discrete satellite spectral irradiances for the solar noon values of cloud-free days to those measured with a ground-based UVA radiometer. An R of 0.86 was obtained confirming that for cloud-free days the broadband UVA can be evaluated from the OMI satellite spectral irradiances.
本研究利用 2009 年 1 月 1 日至 12 月 31 日期间从臭氧监测仪（OMI）卫星获取的离散光谱辐照度数据，重建和验证了宽波段 UVA 辐照度。比较了在澳大利亚图伍姆巴（27°36'S 151°55'E）正午时 OMI 数据与地面光谱辐照度，波长分别为 310nm、324nm 和 380nm，条件分别为晴空和全天空。在晴空条件下，地面紫外分光辐射计数据与卫星测量值之间存在很强的关系，每个波段的 R 值均在 0.89 或以上。数据显示，与地面数据相比，卫星衍生光谱辐照度存在高估。为亚热带地区数据开发的模型考虑了这种高估，对于卫星和地面测量之间的任何数据相关性都是必不可少的。此外，本研究还比较了利用模型评估的正午宽波段 UVA 辐照度与离散卫星光谱辐照度，以及正午无云日的地面 UVA 辐射计测量值，得到的 R 值为 0.86，这证实了对于无云日，宽波段 UVA 可以从 OMI 卫星光谱辐照度中得到评估。
