Publication Date:
2022-05-25
Description:
Author Posting. © American Meteorological Society, 2013. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Physical Oceanography 43 (2013): 2132–2141, doi:10.1175/JPO-D-12-0182.1.
Description:
Repeated occupations of two hydrographic sections in the southwest Pacific basin from the 1990s to 2000s track property changes of Antarctic Bottom Water (AABW). The largest property changes—warming, freshening, increase in total carbon, and decrease in oxygen—are found near the basin’s deep western boundary between 50° and 20°S. The magnitude of the property changes decreases with increasing distance from the western boundary. At the deep western boundary, analysis of the relative importance of AABW (γn 〉 28.1 kg m−3) freshening, heating, or isopycnal heave suggests that the deep ocean stratification change is the result of both warming and freshening processes. The consistent deep ocean changes near the western boundary of the southwest Pacific basin dispel the notion that the deep ocean is quiescent. High-latitude climate variability is being directly transmitted into the deep southwest Pacific basin and the global deep ocean through dynamic deep western boundary currents.
Description:
BMS,
SEW, and BT were supported by the Australian Climate
Change Science Program, funded jointly by the Department
of Climate Change and Energy Efficiency and
CSIRO. Funding for AM was provided through NOAA
GrantNA110AR4310063.
Description:
2014-04-01
Keywords:
Circulation/ Dynamics
;
Waves
;
Oceanic
Repository Name:
Woods Hole Open Access Server
Type:
Article
Format:
application/pdf
