气候变化领域集成服务门户(CCPortal): Dynamic Biological Functioning Important for Simulating and Stabilizing Ocean Biogeochemistry

CCPortal

DOI	10.1002/2017GB005753
	Dynamic Biological Functioning Important for Simulating and Stabilizing Ocean Biogeochemistry
	Buchanan P.J.; Matear R.J.; Chase Z.; Phipps S.J.; Bindoff N.L.
发表日期	2018
ISSN	0886-6236
EISSN	1944-9224
起始页码	565
结束页码	593
卷号	32 期号:4
英文摘要	The biogeochemistry of the ocean exerts a strong influence on the climate by modulating atmospheric greenhouse gases. In turn, ocean biogeochemistry depends on numerous physical and biological processes that change over space and time. Accurately simulating these processes is fundamental for accurately simulating the ocean's role within the climate. However, our simulation of these processes is often simplistic, despite a growing understanding of underlying biological dynamics. Here we explore how new parameterizations of biological processes affect simulated biogeochemical properties in a global ocean model. We combine 6 different physical realizations with 6 different biogeochemical parameterizations (36 unique ocean states). The biogeochemical parameterizations, all previously published, aim to more accurately represent the response of ocean biology to changing physical conditions. We make three major findings. First, oxygen, carbon, alkalinity, and phosphate fields are more sensitive to changes in the ocean's physical state. Only nitrate is more sensitive to changes in biological processes, and we suggest that assessment protocols for ocean biogeochemical models formally include the marine nitrogen cycle to assess their performance. Second, we show that dynamic variations in the production, remineralization, and stoichiometry of organic matter in response to changing environmental conditions benefit the simulation of ocean biogeochemistry. Third, dynamic biological functioning reduces the sensitivity of biogeochemical properties to physical change. Carbon and nitrogen inventories were 50% and 20% less sensitive to physical changes, respectively, in simulations that incorporated dynamic biological functioning. These results highlight the importance of a dynamic biology for ocean properties and climate. ©2018. American Geophysical Union. All Rights Reserved.
英文关键词	carbon cycle; carbon dioxide; climate change; marine ecosystem; nitrogen cycle; phytoplankton
语种	英语
scopus关键词	biogeochemistry; carbon cycle; carbon dioxide; climate change; environmental conditions; global ocean; marine ecosystem; model; nitrogen cycle; parameterization; phytoplankton; simulation
来源期刊	Global Biogeochemical Cycles
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/129842
作者单位	Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS, Australia; CSIRO Oceans and Atmosphere, CSIRO Marine Laboratories, Hobart, TAS, Australia; ARC Centre of Excellence in Climate System Science, University of Tasmania, Hobart, TAS, Australia; Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Hobart, TAS, Australia
推荐引用方式 GB/T 7714	Buchanan P.J.,Matear R.J.,Chase Z.,et al. Dynamic Biological Functioning Important for Simulating and Stabilizing Ocean Biogeochemistry[J],2018,32(4).
APA	Buchanan P.J.,Matear R.J.,Chase Z.,Phipps S.J.,&Bindoff N.L..(2018).Dynamic Biological Functioning Important for Simulating and Stabilizing Ocean Biogeochemistry.Global Biogeochemical Cycles,32(4).
MLA	Buchanan P.J.,et al."Dynamic Biological Functioning Important for Simulating and Stabilizing Ocean Biogeochemistry".Global Biogeochemical Cycles 32.4(2018).