Parisi A V, Sabburg J, Turner J, Dunn P K
University of Southern Queensland, Toowoomba, Australia.
Int J Biometeorol. 2008 Jan;52(3):159-66. doi: 10.1007/s00484-007-0106-7. Epub 2007 May 25.
The development of a unique statistical model for the estimation of the UV index for all sky conditions with solar zenith angles of 60 degrees or less is reported. The model was developed based on available data from an integrated whole-sky automated sky camera and UV spectral irradiance measurement system that was collected every 5 min when the equipment was operational over a period of 1 year. The final model does not include terms directly associated with solar radiation, but rather employs terms, and interactions between these terms, including the parameters of sky cover, solar obstruction, and cloud brightness. The correlation between the estimations of the model and the measured values was 0.81. The developed model was evaluated on a data set spanning 5 months that had not been employed in the development of the model. The correlation for this new data set was 0.50, which increased to 0.65 for the cases when the clouds were considered to be a contributor to UV enhancement above that of a cloud-free day.
据报道，已开发出一种独特的统计模型，用于估算太阳天顶角为60度或更小的所有天空条件下的紫外线指数。该模型是基于集成全天空自动天空相机和紫外光谱辐照度测量系统的可用数据开发的，在设备运行的1年期间，每5分钟收集一次数据。最终模型不包括与太阳辐射直接相关的项，而是采用一些项以及这些项之间的相互作用，包括天空覆盖、太阳遮挡和云亮度的参数。模型估算值与测量值之间的相关性为0.81。在一个未用于模型开发的5个月数据集上对所开发的模型进行了评估。这个新数据集的相关性为0.50，当将云层视为紫外线增强（高于无云日）的一个因素时，相关性增加到0.65。
