Inherent optical properties of the ocean: Retrieval of the absorption coefficient of chromophoric dissolved organic matter from fluorescence measurements
Inherent optical properties of the ocean: Retrieval of the absorption coefficient of chromophoric dissolved organic matter from fluorescence measurements
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DOI：
10.4319/lo.1993.38.7.1394
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发表时间：
1993-11
影响因子：
4.5
通讯作者：
F. Hoge;A. Vodacek;N. Blough
中科院分区：
文献类型：
--
作者：
F. Hoge;A. Vodacek;N. Blough
有色（有色）溶解有机物（CDOM）的吸收和荧光发射之间的定量关系已被确定沿着五个巡航轨迹在西北大西洋，墨西哥湾，蒙特雷湾，包括湾流，环流，斜坡，货架，和沿海沃茨。我们提出了一个协议，用于确定CDOM荧光，这将允许实验室间的比较和校准的空气中的荧光测量。该方案是基于使用水拉曼信号作为内标和硫酸奎宁作为外标。这项研究表明，当一个适当的和一致的程序被用来标准化荧光测量，荧光每单位吸收表现出令人惊讶的变化很小的不同沃茨。在所有地点之间观察到的最大变异性为36%，在北大西洋西部，变异性仅为12%。算法检索CDOM在355和337 nm的吸收系数从船上或机载测量的水拉曼归一化荧光发射产生355-和337-nm的激发。
The quantitative relationship between the absorption and fluorescence emission of chromophoric (colored) dissolved organic matter (CDOM) has been determined along five cruise tracks in the western North Atlantic Ocean, the Gulf of Mexico, and Monterey Bay, and includes Gulf Stream, Loop Current, slope, shelf, and coastal waters. We present a protocol for the determination of CDOM fluorescence that will allow both interlaboratory comparisons and the calibration of airborne fluorescence measurements. This protocol is based on the use of the water Raman signal as an internal radiometric standard and quinine sulfate as an external standard. This study demonstrates that when an appropriate and consistent procedure is used to standardize fluorescence measurements, the fluorescence per unit absorption exhibits surprisingly little variation for diverse waters. The maximum variability observed between all sites was 36% and within the western North Atlantic the variability was only 12%. Algorithms are presented for retrieval of the absorption coefficient of CDOM at 355 and 337 nm from shipboard or airborne measurements of the water-Raman-normalized fluorescence emission resulting from 355- and 337-nm excitation.