DOI: 10.1002/2017GB005753
Scopus记录号: 2-s2.0-85045234278
论文题名: Dynamic Biological Functioning Important for Simulating and Stabilizing Ocean Biogeochemistry
作者: Buchanan P ; J ; , Matear R ; J ; , Chase Z ; , Phipps S ; J ; , Bindoff N ; L
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2018
语种: 英语
英文关键词: Carbon cycle
; Carbon dioxide
; Climate change
; Marine ecosystem
; Nitrogen cycle
; Phytoplankton
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77671
Appears in Collections: 气候变化事实与影响
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作者单位: Institute for Marine and Antarctic Studies University of Tasmania Hobart, Tasmania Australia; CSIRO Oceans and Atmosphere CSIRO Marine Laboratories Hobart, Tasmania Australia; ARC Centre of Excellence in Climate System Science University of Tasmania Hobart, Tasmania Australia; Antarctic Climate and Ecosystems Cooperative Research Centre University of Tasmania Hobart, Tasmania Australia
Recommended Citation:
Buchanan P,J,, Matear R,et al. Dynamic Biological Functioning Important for Simulating and Stabilizing Ocean Biogeochemistry[J]. Global Biogeochemical Cycles,2018-01-01