Aerosol Optical Thickness (AOT)

Entura accumulated Level 3 data over 10 year period and interpolated to 5 km grid. Values of 'Deep Blue Aerosol Optical Depth' (AOT) from the MODIS Aqua data set are used in the analysis. These values are non-dimensional, with a valid range of -0.5 to +5.0 (negative readings are not physically valid but are retained for consistency of the algorithm). Typical values are between 0 and 1, with 0.0 representing clear sky; 0.0 to 0.5 representing moderate levels of aerosols; and 0.5 to 1.0 representing relatively high aerosol concentrations (typical of heavy industrialisation).Values over 1.0 are less common and represent considerable levels of aerosols).The methodology is contained within the report prepared by Entura which is downloadable here: https://gsv.vic.gov.au/downloader/Downloader?ID=documentation/geovic_3/energy_division/E300128-TR01%20Solar%20Atlas%20Victoria%20(public%20release)%20with%20calibration%20certificates.pdf

Entura在为期10年的周期内积累了三级数据（Level 3 data），并将其插值至5公里网格。本分析采用MODIS Aqua数据集的“深蓝气溶胶光学厚度（Deep Blue Aerosol Optical Depth, AOT）”数据。该数据为无量纲量，有效取值范围为-0.5至+5.0（负数值不具备物理意义，但为保证算法一致性予以保留）。典型数值集中于0至1区间：0.0代表晴空状态；0.0至0.5对应中等气溶胶浓度；0.5至1.0对应相对较高的气溶胶浓度，常见于重工业区域。数值超过1.0的情况较为少见，对应相当高的气溶胶浓度水平。本研究的方法学收录于Entura编制的报告中，报告可通过以下链接下载：https://gsv.vic.gov.au/downloader/Downloader?ID=documentation/geovic_3/energy_division/E300128-TR01%20Solar%20Atlas%20Victoria%20(public%20release)%20with%20calibration%20certificates.pdf