Diffuse downwelling attenuation coefficients for Southern Ocean waters for wavelengths 290-700 nm@en
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Diffuse downwelling attenuation coefficients in Napierian form (DAC down) for Southern Ocean waters for wavelengths 290-700 nm. Coefficients for 320-700 nm were calculated directly from depth profiles of in situ irradiance made with an Ocean Optics Jaz spectrophotometer at PAL-LTER Station B, Arthur Harbor, Antarctica. The station is a 75 m deep sampling location about 1 km offshore. Due to the low signal-to-noise ratio in the in situ irradiance observations at wavelengths < 320 nm, coefficients were estimated for 290-320 nm using an exponential model fit to observed data from the 320-370 nm interval: […]
本数据集包含南大洋海域290~700 nm波长范围内的奈皮尔形式漫射下行衰减系数（DAC down）。其中320~700 nm波长对应的衰减系数，直接由在南极洲亚瑟港PAL-LTER B站位使用Ocean Optics Jaz分光光度计获取的现场辐照度深度剖面计算得到。该采样站位水深75米，离岸距离约1公里。由于波长小于320 nm的现场辐照度观测存在较低的信噪比，研究人员通过拟合320~370 nm区间的观测数据构建指数模型，并基于该模型估算了290~320 nm波长范围的衰减系数：[…]
