基于FVCOM的物理—生物地球化学耦合模型构建与应用

施沈阳; 葛建忠; 陈建忠; 郑晓琴; 丁平兴

doi:10.3969/j.issn.1000-5641.201941008

基于FVCOM的物理—生物地球化学耦合模型构建与应用

doi: 10.3969/j.issn.1000-5641.201941008

1.
华东师范大学河口海岸学国家重点实验室, 上海　200241
2.
国家海洋局东海预报中心, 上海　200136

基金项目: 国家重点研发计划(2016YFA0600903); 国家自然科学基金(41776104); 上海市海洋局科研项目(2018-07)

详细信息

通讯作者:
葛建忠, 男, 博士, 副研究员, 研究方向为河口海岸动力学与泥沙动力学. E-mail: jzge@sklec.ecnu.edu.cn

中图分类号: P76
计量
- 文章访问数: 172
- HTML全文浏览量: 384
- PDF下载量: 26
- 被引次数: 0
出版历程
- 收稿日期: 2019-03-23
- 网络出版日期: 2020-05-29
- 刊出日期: 2020-05-01

The development and application of a physical-biogeochemical coupling model based on FVCOM

1.
State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai　200241, China
2.
East China Sea Forecast Center, State Oceanic Administration, Shanghai　200136, China

摘要

摘要: 通过使用FABM框架将水动力模型FVCOM与生态模型ERSEM进行耦合, 构建了一个新的适用于近岸复杂地形并完整描述了低营养级生态系统的物理—生物地球化学耦合模型: FVCOM-FABM-ERSEM. 基于该耦合模型分别建立了垂向一维模型和长江口三维模型. 使用欧洲L4站的多年观测资料对垂向一维模型(1DV)进行验证, 验证结果良好. 使用长江口三维模型模拟长江口及其附近海域2013—2016年的历史过程, 经与营养盐和Chl-a观测数据校验, 并利用MODIS卫星遥感的海洋表层Chl-a分布数据对春季藻类暴发的空间分布进行了验证, 证明建立的耦合模型能正确刻画长江口区域的温度、盐度、硝酸盐、磷酸盐、Chl-a等物理和生物地球化学过程. 同时, 使用模型对长江口锋面区域的特征进行了再现, 并讨论了盐度锋、泥沙锋、营养盐锋和叶绿素锋相伴产生与相互作用的关系.
- FVCOM /
- ERSEM /
- FABM /
- 生物地球化学过程 /
- 耦合
Abstract: By combining the hydrodynamic model FVCOM with the biological model ERSEM, based on FABM, this paper develops a new physical-biogeochemical model: FVCOM-FABM-ERSEM. The combined model is suitable for application to coastal areas and is one of the most comprehensive ecosystem models for the lower trophic levels of the marine food-web. Using the combined model, a one-dimensional vertical (1DV) model and a three-dimensional Changjiang Estuary model were established. The results of the 1DV model were consistent with observation data from the European L4 Station. This paper also simulates the physical and biogeochemical processes of Changjiang Estuary from 2013 to 2016 with the 3D Changjiang Estuary model. The distribution of temperature, salinity, nitrate, phosphate, and chlorophyll-a levels were all found to be consistent with observation data from cruises and MODIS data in the spring when algal blooms occur. The characteristics of the front dynamics of Changjiang Estuary were well represented. The relationship between salinity, turbidity, nutrients, and chlorophyll around the plume front was determined through modeling, indicating a significant co-occurrence effect along the front of physical and biological processes.
- FVCOM /
- ERSEM /
- FABM /
- biogeochemical /
- coupling

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图 1 采用FABM耦合FVCOM与ERSEM示意图

Fig. 1 Combining of FVCOM and ERSEM

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图 2 欧洲L4站地理位置图

Fig. 2 Location of the European L4 Station

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图 3 欧洲L4站网格设置示意图

Fig. 3 Grid of the European L4 Station

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图 4 欧洲L4站表层硝酸盐、磷酸盐和Chl-a浓度及表层短波辐射与光合作用有效辐射

Fig. 4 Surface layer concentration of nitrate, phosphate, chlorophyll-a, and light shortwave radiation as well as photosynthetically active radiation at the European L4 Station

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图 5 长江口网格与站位示意图

Fig. 5 Grid of Changjiang Estuary and position of stations A and B

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图 6 A、B两点表层温度、盐度、硝酸盐、磷酸盐和Chl-a模型观测验证图

Fig. 6 Surface layer concentration of temperature, salinity, nitrate, phosphate, and chlorophyll-a at stations A and B

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图 7 2016年4月MODIS数据(a)与模型结果(b)月平均Chl-a浓度平面分布示意图

Fig. 7 Surface distribution of chlorophyll-a in April 2016 from MODIS data (a) and simulation data (b)

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图 8 长江口4月和5月表层温度、盐度、硝酸盐、磷酸盐及Chl-a平面分布图

Fig. 8 Surface distribution of temperature, salinity, nitrate, phosphate, and chlorophyll-a at Changjiang Estuary in April and May

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表 1 ERSEM基本状态变量

Tab. 1 The state variables of ERSEM

浮游生态系统				底栖生态系统
P1	硅藻	R6	中型颗粒态有机质	Y2c	食碎屑动物	G4n	氮气
P2	微型浮游植物(2~20 μm)	R8	大型颗粒态有机质	Y3c	滤食性动物	K5s	硅酸盐
P3	微微型浮游植物(< 2 μm)	L2c*	文石	Y4c	小型底栖生物	D1m	氧层深度
P4	小型浮游植物(> 20 μm)	O2o	溶解氧	H1c	好氧细菌	D2m	氧化氮层深度
Z4	中型浮游动物	O3o	溶解无机碳	H2c	厌氧细菌	D3m	难熔碳平均穿透深度
Z5	小型浮游动物	N1p	磷酸盐	Q1c	溶解有机质	D4m	难熔氮平均穿透深度
Z6	异养鞭毛虫	N3n	硝酸盐	Q6c	易分解有机质	D5m	难熔磷平均穿透深度
B1	异养细菌	N4n	铵盐	Q7c	难降解有机质	D6m	可降解碳的平均穿透深度
R1	不稳定溶解态有机质	N5s	硅酸盐	Q17c	埋藏有机质	D7m	可降解氮的平均穿透深度
R2	半不稳定有机质	N7f*	铁离子	bL2c*	文石	D8m	可降解磷的平均穿透深度
R3	半难溶有机质	bioAlk*	生物碱度	G2o	溶解氧	D9m	可降解硅的平均穿透深度
R4	小型颗粒态有机质			G3c	溶解有机碳
注: *为模型中非必须选项

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