气候变化领域集成服务门户(CCPortal): Ocean Biogeochemistry in GFDL's Earth System Model 4.1 and Its Response to Increasing Atmospheric CO2

CCPortal

DOI	10.1029/2019MS002043
	Ocean Biogeochemistry in GFDL's Earth System Model 4.1 and Its Response to Increasing Atmospheric CO2
	Stock C.A.; Dunne J.P.; Fan S.; Ginoux P.; John J.; Krasting J.P.; Laufkötter C.; Paulot F.; Zadeh N.
发表日期	2020
ISSN	19422466
卷号	12 期号:10
英文摘要	This contribution describes the ocean biogeochemical component of the Geophysical Fluid Dynamics Laboratory's Earth System Model 4.1 (GFDL-ESM4.1), assesses GFDL-ESM4.1's capacity to capture observed ocean biogeochemical patterns, and documents its response to increasing atmospheric CO2. Notable differences relative to the previous generation of GFDL ESM's include enhanced resolution of plankton food web dynamics, refined particle remineralization, and a larger number of exchanges of nutrients across Earth system components. During model spin-up, the carbon drift rapidly fell below the 10 Pg C per century equilibration criterion established by the Coupled Climate-Carbon Cycle Model Intercomparison Project (C4MIP). Simulations robustly captured large-scale observed nutrient distributions, plankton dynamics, and characteristics of the biological pump. The model overexpressed phosphate limitation and open ocean hypoxia in some areas but still yielded realistic surface and deep carbon system properties, including cumulative carbon uptake since preindustrial times and over the last decades that is consistent with observation-based estimates. The model's response to the direct and radiative effects of a 200% atmospheric CO2 increase from preindustrial conditions (i.e., years 101–120 of a 1% CO2 yr−1 simulation) included (a) a weakened, shoaling organic carbon pump leading to a 38% reduction in the sinking flux at 2,000 m; (b) a two-thirds reduction in the calcium carbonate pump that nonetheless generated only weak calcite compensation on century time-scales; and, in contrast to previous GFDL ESMs, (c) a moderate reduction in global net primary production that was amplified at higher trophic levels. We conclude with a discussion of model limitations and priority developments. ©2020. The Authors.
英文关键词	carbon cycle; climate change; Earth System Model; marine ecosystems; ocean biogeochemistry
语种	英语
scopus关键词	Biogeochemistry; Bioinformatics; Calcite; Calcium carbonate; Carbon dioxide; Dynamics; Forestry; Nutrients; Oceanography; Organic carbon; Plankton; Calcite compensation; Enhanced resolutions; Geophysical fluid dynamics laboratories; Net primary production; Nutrient distributions; Ocean biogeochemistry; Phosphate limitation; Pre-industrial conditions; Climate models; atmosphere-ocean coupling; biogeochemistry; biological pump; calcite; calcium carbonate; carbon dioxide; climate modeling; food web; net primary production; open ocean; organic carbon
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156626
作者单位	National Ocean and Atmospheric Administration, Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States; Climate and Environmental Phys, University of Bern, Bern, Switzerland; Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland; SAIC/GFDL, Princeton, NJ, United States
推荐引用方式 GB/T 7714	Stock C.A.,Dunne J.P.,Fan S.,et al. Ocean Biogeochemistry in GFDL's Earth System Model 4.1 and Its Response to Increasing Atmospheric CO2[J],2020,12(10).
APA	Stock C.A..,Dunne J.P..,Fan S..,Ginoux P..,John J..,...&Zadeh N..(2020).Ocean Biogeochemistry in GFDL's Earth System Model 4.1 and Its Response to Increasing Atmospheric CO2.Journal of Advances in Modeling Earth Systems,12(10).
MLA	Stock C.A.,et al."Ocean Biogeochemistry in GFDL's Earth System Model 4.1 and Its Response to Increasing Atmospheric CO2".Journal of Advances in Modeling Earth Systems 12.10(2020).