期刊
ANNUAL REVIEW OF MARINE SCIENCE, VOL 10
卷 10, 期 -, 页码 503-527出版社
ANNUAL REVIEWS
DOI: 10.1146/annurev-marine-121916-063414
关键词
Antarctic Bottom Water; chlorofluorocarbons; deep-ocean ventilation; abyssal warming; bottom limb of the meridional overturning circulation; changes in ocean circulation
资金
- Directorate For Geosciences
- Division Of Ocean Sciences [1433922, 1437015] Funding Source: National Science Foundation
- Directorate For Geosciences
- Division Of Ocean Sciences [1357121, 1536115] Funding Source: National Science Foundation
Antarctic Bottom Water (AABW) is the coldest, densest, most prolific water mass in the global ocean. AABW forms at several distinct regions along the Antarctic coast and feeds into the bottom limb of the meridional overturning circulation, filling most of the global deep ocean. AABW has warmed, freshened, and declined in volume around the globe in recent decades, which has implications for the global heat and sea level rise budgets. Over the past three decades, the use of tracers, especially time-varying tracers such as chlorofluorocarbons, has been essential to our understanding of the formation, circulation, and variability of AABW. Here, we review three decades of temperature, salinity, and tracer data and analysis that have led to our current knowledge of AABW and how the southern component of deep-ocean ventilation is changing with time.
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