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Chlorophyll biomass in the global oceans: satellite retrieval using inherent optical properties

机译:全球海洋中的叶绿素生物量:利用固有光学特性进行卫星检索

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摘要

In the upper layer of the global ocean, 2082 in situ chlorophyll biomass values 〈Chl〉 are retrieved by concurrent satellite-derived inherent optical properties (IOP). It is found that (1) the phytoplankton absorption coefficient IOP alone does not provide satisfactory 〈Chl〉 retrieval; (2) the chromophoric dissolved organic matter (CDOM) absorption coefficient IOP must also be used to obtain satisfactory retrieval through 〈Chl〉 ∝ a_(ph)+pa_(CDOM) where p is a constant and a_(ph) and a_(CDOM) are, respectively, the phytoplankton and CDOM absorption coefficients; (3) the IOP-based 〈Chl〉 retrieval performance is comparable to standard satellite reflectance ratio retrievals (that have CDOM absorption intrinsically embedded within them); (4) inclusion of the total backscattering coefficient IOP does not contribute significantly to 〈Chl〉 retrieval; and (5) the new IOP-based algorithm may provide the possibility for future research to establish the actual role of extracellular CDOM from all sources in the intracellular production of chlorophyll biomass.
机译:在全球海洋的上层,通过并发卫星衍生的固有光学特性(IOP)检索了2082个原位叶绿素生物量值。发现:(1)仅浮游植物吸收系数IOP不能提供令人满意的& Chl&检索; (2)还必须使用发色性溶解有机物(CDOM)吸收系数IOP通过 ∝ a_(ph)+ pa_(CDOM)获得令人满意的检索,其中p是常数,a_(ph)和a_(CDOM )分别是浮游植物和CDOM的吸收系数; (3)基于IOP的& Chl&的检索性能可与标准卫星反射率检索(其内在嵌入CDOM吸收)相媲美; (4)包含总的反向散射系数IOP对检索没有显着贡献; (5)基于IOP的新算法可能为将来的研究提供可能性,以确立所有来源的细胞外CDOM在叶绿素生物量的细胞内生产中的实际作用。

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