Perturbed Biology and Physics Signatures in a 1-D Ocean Biogeochemical Model Ensemble

Perturbed Biology and Physics Signatures in a 1-D Ocean Biogeochemical Model Ensemble
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一维海洋生物地球化学模型集合中的扰动生物学和物理特征

DOI:
10.3389/fmars.2020.00549
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发表时间:
2020
期刊:
British Medical Journal (Clinical research ed.)
影响因子:
--
通讯作者:
K. Haines
K. Haines
中科院分区:
--
文献类型:
--
作者:
Prima Anugerahanti;Shovonlal Roy;K. Haines

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海洋生物地球化学模型的不确定性来源包括来自物理过程的输入和代表生物地球化学过程强度和依赖性的功能形式的选择。本研究利用在五个海洋学站运行的1-D中等复杂模型,通过扰动生物地球化学方程和扰动物理输入生成集合,探索这些不确定性的特征特征。扰动生物地球化学系综(PBE)比扰动物理系综(PPE)产生更大的扩散,且系综变化明显不同。从观测结果来看,浮游植物池中氮组分的变异性比任何单一模式集合成员都要大,但PBE的传播通常捕捉到了这种变异性,而PPE的传播则没有。结果表明,在我们的一维模型设置中,PBE方法比PPE方法更能真实地表示不确定性。我们的方法需要在更复杂的模型中进行测试,以便了解其在更大尺度上的意义。
Sources of uncertainty in a marine biogeochemical model include input from physical processes and the choice of functional forms representing the strength and dependencies of biogeochemical processes. This study explores characteristic signatures from these uncertainties by generating ensembles from perturbing the biogeochemistry equations and perturbing physical input using a 1-D intermediately-complex model run at five oceanographic stations. Perturbed biogeochemistry ensemble (PBE) produces larger spreads than perturbed physics ensemble (PPE), and distinctly different ensemble variations. Fractions of nitrogen in phytoplankton pool from observations show a larger variability than in any single model-ensemble member, but the PBE spread generally captures this variability, whereas the PPE spread does not. The results show that the PBE method gives a more realistic representation of uncertainty than PPE in our 1D-model setup. Our method needs to be tested in more complex models in order to understand its significance on larger scales.
DOI: 10.5194/bg-10-4357-2013
发表时间: 2013-06
期刊: Biogeosciences
影响因子: 4.9
作者:
S. Henson;Harriet Cole;C. Beaulieu;A. Yool
通讯作者: S. Henson;Harriet Cole;C. Beaulieu;A. Yool
ERSEM 15.06:海洋生物地球化学和低营养级生态系统动态的通用模型
DOI: 10.5194/gmdd-8-7063-2015
发表时间: 2015
期刊: --
影响因子: --
作者:
Butenschön M
通讯作者: Butenschön M