MESMO 3: Flexible phytoplankton stoichiometry and refractory dissolved organic matter
MESMO 3: Flexible phytoplankton stoichiometry and refractory dissolved organic matter
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DOI：
10.5194/gmd-14-2265-2021
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发表时间：
2021-04
影响因子：
5.1
通讯作者：
Katsumi Matsumoto;T. Tanioka;Jacob Zahn
中科院分区：
文献类型：
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作者：
Katsumi Matsumoto;T. Tanioka;Jacob Zahn
抽象的。我们描述了第三版的明尼苏达地球系统模式的海洋地球化学（MESMO 3），地球系统模型的中间复杂性，与动力海洋，动力-热力学海冰，和能量-水分平衡的大气。第3版的一个主要特点是灵活的C：N：P比例的三个浮游植物功能类型中的模式。灵活的化学计量是基于与磷酸盐，硝酸盐，温度和光的环境依赖性的幂律制剂。其他新的功能包括固氮，水柱反硝化，氧气和温度依赖性有机物的反硝化作用，和碳酸钙生产的概念的基础上的残留硝酸盐的潜在增长。此外，我们描述了半不稳定和耐火溶解有机池的C，N，P和Fe，可以启用MESMO 3作为一个可选的功能。难降解的溶解有机物可通过表面的光降解和底部的热液喷口降解而降解。这些改进为使用MESMO 3进一步调查全球海洋碳循环以了解过去、现在和未来的环境条件变化提供了基础。
Abstract. We describe the third version of Minnesota Earth System Model for Ocean biogeochemistry (MESMO 3), an Earth system model of intermediate complexity, with a dynamical ocean, dynamic–thermodynamic sea ice, and an energy–moisture-balanced atmosphere. A major feature of version 3 is the flexible C:N:P ratio for the three phytoplankton functional types represented in the model. The flexible stoichiometry is based on the power law formulation with environmental dependence on phosphate, nitrate, temperature, and light. Other new features include nitrogen fixation, water column denitrification, oxygen and temperature-dependent organic matter remineralization, and CaCO3 production based on the concept of the residual nitrate potential growth. In addition, we describe the semi-labile and refractory dissolved organic pools of C, N, P, and Fe that can be enabled in MESMO 3 as an optional feature. The refractory dissolved organic matter can be degraded by photodegradation at the surface and hydrothermal vent degradation at the bottom. These improvements provide a basis for using MESMO 3 in further investigations of the global marine carbon cycle to changes in the environmental conditions of the past, present, and future.