气候变化领域集成服务门户(CCPortal): Antarctic Bottom Water Warming in the Brazil Basin: 1990s Through 2020; From WOCE to Deep Argo

CCPortal

DOI	10.1029/2020GL089191
	Antarctic Bottom Water Warming in the Brazil Basin: 1990s Through 2020; From WOCE to Deep Argo
	Johnson G.C.; Cadot C.; Lyman J.M.; McTaggart K.E.; Steffen E.L.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:18
英文摘要	A warming trend of 2.1 (±0.4) m °C yr−1 in bottom waters (4,500 to 5,900 dbar) spreading north from Antarctica through the Brazil Basin is quantified by comparing 2019–2020 data from a new Deep Argo regional pilot array to 1989–1995 data from full-depth zonal and meridional hydrographic sections occupied across the basin before and during the World Ocean Circulation Experiment (WOCE). Additionally, float temperatures are about 0.046°C warmer than those from a long-term climatology in those same bottom waters. Lower North Atlantic Deep Water in the basin shows no detectable warming, but Upper North Atlantic Deep Water exhibits evidence of warming in both analyses. The bottom-intensified warming results in a reduction in vertical density stratification between the bottom and deep waters of about 1% per decade. This change is in contrast with the effects of surface-intensified warming, which tends to increase vertical density stratification. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Geophysics; Antarctic Bottom Water; Antarctica; Bottom water; Deep Water; Density stratification; Float temperatures; North Atlantic Deep Water; World Ocean Circulation Experiment; Earth sciences; Antarctic Bottom Water; Argo; climatology; global warming; hydrographic survey; meridional circulation; North Atlantic Deep Water; stratification; WOCE; zonal flow; Antarctica; Atlantic Ocean; Atlantic Ocean (North); Brazil Basin
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169708
作者单位	NOAA/Pacific Marine Environmental Laboratory, Seattle, WA, United States; JIMAR, University of Hawai‘i at Mānoa, Honolulu, HI, United States
推荐引用方式 GB/T 7714	Johnson G.C.,Cadot C.,Lyman J.M.,et al. Antarctic Bottom Water Warming in the Brazil Basin: 1990s Through 2020; From WOCE to Deep Argo[J],2020,47(18).
APA	Johnson G.C.,Cadot C.,Lyman J.M.,McTaggart K.E.,&Steffen E.L..(2020).Antarctic Bottom Water Warming in the Brazil Basin: 1990s Through 2020; From WOCE to Deep Argo.Geophysical Research Letters,47(18).
MLA	Johnson G.C.,et al."Antarctic Bottom Water Warming in the Brazil Basin: 1990s Through 2020; From WOCE to Deep Argo".Geophysical Research Letters 47.18(2020).