KOSMOS 2018 Gran Canaria mesocosm study: particle flux data from sediment trap@en

The data set compiles sinking flux data collected during a KOSMOS mesocosm experiment carried out in the frame work of the Ocean Artificial Upwelling project. The experiment was performed in the North-East Atlantic Ocean off the coast of Gran Canaria in autumn 2018 and lasted for 39 days. In this study we investigated the effect of different intensities of artificial upwelling combined with two upwelling modes (recurring additions versus one singular addition) on POC export and its potential transfer efficiency to depth. The data set includes the amounts of surface water that were exchanged with nutrient-rich deep water (from ~300 m depth). It also contains particle flux data, i.e. POC flux, PON flux, BSi flux and the corresponding C:N and C:Si ratios, as well as the carbon-specific remineralization rates, sinking velocities, porosities and remineralization length scales of sinking particles.本数据集汇编了海洋人工上升流（Ocean Artificial Upwelling）项目框架下开展的KOSMOS中型实验生态系实验（mesocosm experiment）所采集的沉降通量数据。该实验于2018年秋季在大加那利岛沿岸的东北大西洋海域实施，持续时长共计39天。本研究针对不同强度的人工上升流，结合两种上升流模式（周期性补给与单次补给）对颗粒有机碳（Particulate Organic Carbon, POC）输出及其向深海的潜在转移效率的影响展开了探究。数据集包含了与约300米深度富营养深层水发生交换的表层海水体量数据；同时涵盖颗粒通量相关数据，具体包括POC通量、颗粒有机氮（Particulate Organic Nitrogen, PON）通量、生物硅（Biogenic Silica, BSi）通量，以及对应的C:N、C:Si元素比值；此外还收录了沉降颗粒的碳特异性再矿化速率、沉降速率、孔隙度及再矿化长度尺度等参数。