气候变化领域集成服务门户(CCPortal): 20th century cooling of the deep ocean contributed to delayed acceleration of Earth’s energy imbalance

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DOI	10.1038/s41467-021-24472-3
	20th century cooling of the deep ocean contributed to delayed acceleration of Earth’s energy imbalance
	Bagnell A.; DeVries T.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	The historical evolution of Earth’s energy imbalance can be quantified by changes in the global ocean heat content. However, historical reconstructions of ocean heat content often neglect a large volume of the deep ocean, due to sparse observations of ocean temperatures below 2000 m. Here, we provide a global reconstruction of historical changes in full-depth ocean heat content based on interpolated subsurface temperature data using an autoregressive artificial neural network, providing estimates of total ocean warming for the period 1946-2019. We find that cooling of the deep ocean and a small heat gain in the upper ocean led to no robust trend in global ocean heat content from 1960-1990, implying a roughly balanced Earth energy budget within −0.16 to 0.06 W m−2 over most of the latter half of the 20th century. However, the past three decades have seen a rapid acceleration in ocean warming, with the entire ocean warming from top to bottom at a rate of 0.63 ± 0.13 W m−2. These results suggest a delayed onset of a positive Earth energy imbalance relative to previous estimates, although large uncertainties remain. © 2021, The Author(s).
语种	英语
scopus关键词	acceleration; cooling; energy budget; global ocean; reconstruction; seasonal variation; twentieth century; upper ocean; acceleration; article; artificial neural network; budget; cooling; heat; sea; uncertainty; warming
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250648
作者单位	Interdepartmental Graduate Program in Marine Science, University of California, Santa Barbara, United States; Department of Geography, University of California, Santa Barbara, United States; Earth Research Institute, University of California, Santa Barbara, United States
推荐引用方式 GB/T 7714	Bagnell A.,DeVries T.. 20th century cooling of the deep ocean contributed to delayed acceleration of Earth’s energy imbalance[J],2021,12(1).
APA	Bagnell A.,&DeVries T..(2021).20th century cooling of the deep ocean contributed to delayed acceleration of Earth’s energy imbalance.Nature Communications,12(1).
MLA	Bagnell A.,et al."20th century cooling of the deep ocean contributed to delayed acceleration of Earth’s energy imbalance".Nature Communications 12.1(2021).