Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL094405 |
Parameterizing eddy transport of biogeochemical tracers | |
Channing J. Prend; Glenn R. Flierl; Katherine M. Smith; Alexis K. Kaminski | |
2021-10-16 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2021 |
英文摘要 | The distribution of oceanic biogeochemical tracers is fundamentally tied to physical dynamics at and below the mesoscale. Since global climate models rarely resolve those scales, turbulent transport is parameterized in terms of the large-scale gradients in the mean tracer distribution and the physical fields. Here, we demonstrate that this form of the eddy flux is not necessarily appropriate for reactive tracers, such as nutrients and phytoplankton. In an idealized nutrient-phytoplankton system, we show that the eddy flux of one tracer should depend on the gradients of itself and the other. For certain parameter regimes, incorporating cross-diffusion can significantly improve the representation of both phytoplankton and nutrient eddy fluxes. We also show that the efficacy of eddy diffusion parameterizations requires timescale separation between the flow and reactions. This result has ramifications for parameterizing sub-grid scale biogeochemistry in more complex ocean models since many biological processes have comparable timescales to submesoscale motions. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/340048 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Channing J. Prend,Glenn R. Flierl,Katherine M. Smith,et al. Parameterizing eddy transport of biogeochemical tracers[J]. Geophysical Research Letters,2021. |
APA | Channing J. Prend,Glenn R. Flierl,Katherine M. Smith,&Alexis K. Kaminski.(2021).Parameterizing eddy transport of biogeochemical tracers.Geophysical Research Letters. |
MLA | Channing J. Prend,et al."Parameterizing eddy transport of biogeochemical tracers".Geophysical Research Letters (2021). |
条目包含的文件 | 条目无相关文件。 |
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