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Bottom water warming along the pathway of lower circumpolar deep water in the Pacific Ocean
Author(s) -
Kawano Takeshi,
Fukasawa Masao,
Kouketsu Shinya,
Uchida Hiroshi,
Doi Toshimasa,
Kaneko Ikuo,
Aoyama Michio,
Schneider Wolfgang
Publication year - 2006
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 - 10.1029/2006gl027933
Subject(s) - hydrography , circumpolar deep water , circumpolar star , bottom water , oceanography , antarctic bottom water , climatology , environmental science , deep water , water mass , deep ocean water , hydrographic survey , effects of global warming on oceans , global warming , geology , climate change , north atlantic deep water
Repeat trans‐Pacific hydrographic observations along the pathway of Lower Circumpolar Deep Water (LCDW) reveal that bottom water has warmed by about 0.005 to 0.01°C in recent decades. The warming is probably not from direct heating of LCDW, but is manifest as a decrease of the coldest component of LCDW evident at each hydrographic section. This result is consistent with numerical model results of warming associated with decreased bottom water formation rates around Antarctica.