Multi-method approach to quantify uncertainties in the measurements of light absorption by particles.
Multi-method approach to quantify uncertainties in the measurements of light absorption by particles.
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DOI：
10.1364/oe.23.031043
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发表时间：
2015-11
期刊：
影响因子：
3.8
通讯作者：
A. Neeley;S. Freeman;L. Harris
中科院分区：
文献类型：
--
作者：
A. Neeley;S. Freeman;L. Harris
通过技术和研究的进步，已经出现了许多方法和协议来估计光的光谱吸收的颗粒，ap，在水生介质。然而，测量之间的一致程度仍然难以捉摸。本文采用多方法的方法，对两种常用的分光光度法测量滤垫上颗粒物光密度的测量精度进行了评估，并对六种海洋颜色波长（412、443、490、510、555、670 nm）的ap的计算方法的测量精度或不确定度进行了评估。用这两种方法测得的光密度表现出显着的正相关性。光密度测量精度范围为0.061%-63%，并表现出显著的正相关性。多方法不确定度范围为7.48%-119%。555 nm和670 nm处的ap值显示出最高的不确定度值。与确定的ap相比，建模的ap的性能较差，表明不确定性传播到生物光学算法中。
Through technological and research advances, numerous methods and protocols have emerged to estimate spectral absorption of light by particles, ap, in an aquatic medium. However, the level of agreement among measurements remains elusive. We employed a multi-method approach to estimate the measurement precision of measuring optical density of particles on a filter pad using two common spectrophotometric methods, and the determination precision, or uncertainty, of the computational techniques for estimating ap for six ocean color wavelengths (412, 443, 490, 510, 555, 670 nm). The optical densities measured with the two methods exhibited a significant, positive correlation. Optical density measurement precision ranged from 0.061%-63% and exhibited a significant, positive correlation. Multi-method uncertainty ranged from 7.48%-119%. Values of ap at 555 nm and 670 nm exhibited the highest values of uncertainty. Poor performance of modeled ap compared to determined ap suggest uncertainties are propagated into bio-optical algorithms.