A semi-analytical model (CDOM-KD2) based on the light vertical attenuation coefficient (K_d(λ)) has been developed for estimating the absorption by colored dissolved organic matter, a_cdom(443), from ocean color remote sensing at global scale. The performance of this new inversion model together with that of former models by Shanmugam (2011) (S2011), Chen et al. (2017) (C2017) and Aurin et al. (2018) (A2018) was evaluated from in situ and matchup validation data sets gathering worldwide distributed samples. An overall consistency in the a_cdom(443) estimated from S2011, C2017 and CDOM-KD2 models with a slightly better performance of the latter method was observed (MAPD of 27.42% and 30.85% for open ocean with in situ and satellite data, respectively), emphasizing the possible specific assessment of a_cdom(443) dynamics from satellite remote sensing over the global ocean including the most oligotrophic waters. At 443 nm the global average relative contribution of a_cdom(443) to the absorption by colored detrital matter, a_cdm(443) is of 61% ± 14%, while the contribution of a_cdom(443) to the non-water absorption, a_nw(443), is of 35% ± 26%. Strong spatial disparities are however observed for both a_cdom(443) temporal dynamics and relative contribution in the absorption budget. A decoupling is observed between a_cdom(443) and particulate detrital (i.e. non-living) matter and phytoplankton in the gyre areas where a low temporal variability is globally observed. This is contrasting with water masses influenced by terrestrial inputs as well as in equatorial and subtropical areas impacted by main oceanic currents where CDOM loads and a_cdom(443) contribution in the water absorption budget are more variable.

基于光垂直衰减系数（A半分析模型（CDOM-KD2）ķ _d（λ））已经用于通过有色溶解有机物质推定的吸收被开发出来，一个_CDOM（443），从海洋颜色遥感在全球规模。这个新反演模型的性能与 Shanmugam (2011) (S2011)、Chen 等人的先前模型的性能一起。(2017) (C2017) 和 Aurin 等人。(2018) (A2018) 从收集全球分布样本的原位和匹配验证数据集进行评估。a _cdom的整体一致性(443) 从 S2011、C2017 和 CDOM-KD2 模型估计，观察到后一种方法的性能稍好（具有原位和卫星数据的开阔海洋的 MAPD 分别为 27.42% 和 30.85%），强调可能的具体评估的一个_CDOM（443）从卫星动力学遥感在全球海洋包括最贫营养水域。在443纳米的总体平均相对贡献一个_CDOM（443）由有色碎屑物的吸收，一个_CDM（443）是61％±14％，而贡献一个_CDOM（443）到非吸水，一个_NW(443)，为 35% ± 26%。强的空间差异是为两个然而观察到一个_CDOM（443）时间动态和在吸收预算相对贡献。甲解耦之间观察到一个_CDOM（443）和颗粒碎屑（即非活性）物质和浮游植物在低时间变异性全局观察到的环流区域。这与受陆地输入影响的水团以及受主要洋流影响的赤道和亚热带地区的水团形成对比，在这些地区，CDOM 负载和吸水预算中的_cdom (443) 贡献变化更大。