MESMO global model output for glacial simulations with dynamic C:N:P ratios

<p>The ocean model used to generate these outputs is MESMO (Matsumoto et al., 2008, 2013). Briefly it is an earth system model of intermediate complexity that consists of a 3D dynamical model of the global ocean, 2D dynamic-thermodynamic model of sea ice, and 2D energy moisture balanced model of atmosphere. The results archived here are from MESMO experiments under the modern conditions and under glacial conditions. These experiments are described and their results analyzed in a submitted manuscript: Matsumoto, Rickaby, and Tanioka, \"Carbon export buffering and CO2 drawdown by flexible phytoplankton C:N:P under glacial conditions.\" The experiments are all 5000 year runs.&nbsp;</p>

<p>Model outputs archived have a complete suite of biogeochemical state variables in the 3D global ocean domain. They include temperature, salinity, nutrients (PO4, NO3, Fe, Si), carbon pools and their isotopes (DIC, DOC, POC, 13C and 14C) oxygen, and alkalinity. Stoichiometric ratios of phytoplankton functional types (C:P, C:N, N:P) are also included. Rates and fluxes archived include production (NPP, export) by phytoplankton types and nitrogen fixation and denitrification. After 5000 years, almost all properties reach steady state, with the except nitrogen fixation and denitrification in some runs</p>

用于生成这些输出的海洋模型为MESMO（Matsumoto等人，2008、2013）。简言之，该模型属于中等复杂度地球系统模型，由全球海洋三维动力模型、海冰二维动力-热力学模型以及大气能量水分平衡模型组成。此处归档的模拟结果，来自现代环境与冰期环境下的MESMO试验。相关试验的细节与结果分析已刊载于一篇已投稿的学术手稿：《冰期条件下可变C:N:P计量比浮游植物介导的碳输出缓冲与CO₂抽取》（Matsumoto、Rickaby与Tanioka）。所有试验均为5000年时长的连续模拟运行。

归档的模型输出包含全球海洋三维区域内完整的生物地球化学状态变量集，涵盖温度、盐度、营养盐（PO4、NO3、Fe、Si）、碳库及其同位素（DIC、DOC、POC、¹³C与¹⁴C）、溶解氧以及碱度。同时还涵盖浮游植物功能类群的化学计量比（C:P、C:N、N:P）。归档的速率与通量数据涵盖不同浮游植物类群的生产过程（净初级生产力NPP、输出生产力）、固氮作用与反硝化作用。在模拟运行5000年后，几乎所有属性均达到稳态，仅部分试验中的固氮与反硝化过程除外。