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Chlorofluorocarbons in a global ocean eddy‐resolving OGCM: Pathway and formation of Antarctic Bottom Water
Author(s) -
Sasai Yoshikazu,
Ishida Akio,
Yamanaka Yasuhiro,
Sasaki Hideharu
Publication year - 2004
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2004gl019895
Subject(s) - antarctic bottom water , bottom water , oceanography , geology , ridge , weddell sea bottom water , climatology , paleontology , sea ice , ice shelf , cryosphere
We have investigated the pathway of Antarctic Bottom Water (AABW) using simulated chlorofluorocarbons (CFCs) distribution in a global eddy‐resolving OGCM. Our goal is to improve our understanding of the processes and pathways determining the distribution of CFCs in the Southern Ocean, where much of this tracer is entrained by formation of the deep and bottom water. The model exhibits considerable skill in reproducing the section along the Greenwich Meridian (AJAX) and 170°W (WOCE P15S). In the South Atlantic, the model indicates two pathways transporting CFC‐11 from the Weddell Sea to the AJAX section: an upper pathway through the Scotia Sea, and a lower pathway south along the South Scotia Ridge. The simulated CFC‐11 inventory along the two sections is much like that observed.