The characteristics of particulate absorption, scattering and attenuation coefficients in the surface ocean; Contribution of the Tara Oceans expedition
Emmanuel Boss , Marc Picheral , Thomas Leeuw , Alison Chase , Eric Karsenti , Gabriel Gorsky , Lisa Taylor , Wayne Slade , Josephine Ras , Herve Claustre
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引用次数: 74
Abstract
A dataset consisting of AC-S measurements of (hyper-) spectral particulate absorption, scattering and attenuation coefficients were obtained from measurements performed on the flow-through system of the R/V Tara during its 2.5-year long expedition.
The AC-S instruments were robust, working continuously with weekly maintenance for about 3 months at a time, and provided absorption (attenuation) data for 454 (375) days, or 90% (75%) of total possible days during the expedition.
This dataset has been mapped to 1 km×1 km bins to avoid over emphasizing redundant data, and to match the spatial scale of typical ocean color satellite sensors. It consists of nearly 70,000 particulate absorption spectra and about 60,000 particulate scattering and attenuation spectra. These data are found to be consistent with chlorophyll extraction and with the published average shapes of particulate absorption and scattering spectra and bio-optical relationships. This dataset is richer than previous ones in the data from open-ocean (oligotrophic) environments making it more representative of global distributions and of utility for global algorithm development.
在长达2.5年的考察中,通过对R/V Tara的流动系统进行测量,获得了一个由AC-S测量组成的(超)光谱颗粒吸收、散射和衰减系数的数据集。AC-S仪器非常坚固,可以连续工作约3个月,每周进行维护,并提供454(375)天的吸收(衰减)数据,占考察期间总可能天数的90%(75%)。为了避免过度强调冗余数据,并与典型海洋彩色卫星传感器的空间尺度相匹配,该数据集被映射为1个km×1 km bin。它由近7万个粒子吸收光谱和约6万个粒子散射和衰减光谱组成。这些数据与叶绿素提取和已发表的颗粒吸收和散射光谱的平均形状以及生物光学关系一致。该数据集比以前的开放海洋(寡营养)环境数据更丰富,使其更能代表全球分布和全球算法开发的效用。