To understand the vertical variations in carbon fluxes in biologically productive waters, four autonomous carbon flux explorers (CFEs), ship-lowered CTD-interfaced particle-sensitive transmissometer and scattering sensors, and surface-drogued sediment traps were deployed in a filament of offshore flowing, recently upwelled water, during the June 2017 California Current Ecosystem – Long Term Ecological Research process study. The Lagrangian CFEs operating at depths from 100–500 m yielded carbon flux and its partitioning with size from 30 µm–1 cm at three intensive study locations within the filament and in waters outside the filament. Size analysis codes intended to enable long-term CFE operations independent of ships are described. Different particle classes (anchovy pellets, copepod pellets, and > 1000 µm aggregates) dominated the 100–150 m fluxes during successive stages of the filament evolution as it progressed offshore. Fluxes were very high at all locations in the filament; below 150 m, flux was invariant or increased with depth at the two locations closer to the coast. Martin curve b factors (± denotes 95 % confidence intervals) for total particulate carbon flux were +0.37 ± 0.59, +0.85 ± 0.31, −0.24 ± 0.68, and −0.45 ± 0.70 at the three successively occupied locations within the plume, and in transitional waters. Interestingly, the flux profiles for all particles < 400 µm were a much closer fit to the canonical Martin profile (b−0.86); however, most (typically > 90 %) of the particle flux was carried by > 1000 µm sized aggregates which increased with depth. Mechanisms to explain the factor of 3 flux increase between 150 and 500 m at the mid-plume location are investigated.

中文翻译：

---

加利福尼亚海岸附近一条动态上升的灯丝下方的碳出口和命运

为了了解生物生产水中碳通量的垂直变化，将四个自主碳通量探测仪（CFE），船下CTD接口的颗粒敏感透射仪和散射传感器以及表面污物捕集器部署在海上流动的细丝中，是最近在2017年6月的“加利福尼亚现行生态系统-长期生态研究”过程研究中出现的水流上升。拉格朗日CFE在深度为100-500 m的区域内产生碳通量，并在细丝内和细丝外的三个水域中的30微米至1厘米范围内分配碳通量 。描述了旨在实现独立于船舶的长期CFE操作的尺寸分析代码。不同的颗粒类别（an鱼颗粒，co足类颗粒和>  1000  μ米聚集体）在灯丝演化的连续阶段占主导地位的100-150米通量，因为它海上进行。灯丝中所有位置的通量都很高。在150 m以下，通量在靠近海岸的两个位置不变或随深度增加。马丁曲线b因子（±表示95个％置信区间）为总颗粒的碳通量分别为+ 0.37  ±  0.59，+ 0.85  ±  0.31，- 0.24  ±  0.68，和- 0.45  ± 在羽状流和过渡水域中三个连续被占用的位置处为0.70。有趣的是，所有<  400  µm粒子的通量分布都 更接近于经典的马丁分布（b -0.86）。然而，大部分（通常>  90％）的粒子通量的通过进行>  1000  μ中号尺寸的聚集体，其与深度增加。研究了解释在半成品中部位置150和500 m之间3通量增加的因素的机理。