FN Archimer Export Format
PT J
TI What fraction of the Pacific and Indian oceans' deep water is formed in the Southern Ocean?
BT 
AF RAE, James W. B.
   BROECKER, Wally
AS 1:1;2:2;
FF 1:;2:;
C1 Univ St Andrews, Sch Earth & Environm Sci, Irvine Bldg, St Andrews KY16 9AL, Fife, Scotland.
   Columbia Univ, Lamont Doherty Earth Observ, 61 Route 9W,POB 1000, Palisades, NY 10964 USA.
C2 UNIV ST ANDREWS, UK
   UNIV COLUMBIA, USA
IN DOAJ
IF 3.951
TC 16
UR https://archimer.ifremer.fr/doc/00675/78684/80861.pdf
   https://archimer.ifremer.fr/doc/00675/78684/80862.pdf
LA English
DT Article
CR OISO - OCÉAN INDIEN SERVICE D'OBSERVATION
AB In this contribution we explore constraints on the fractions of deep water present in the Indian and Pacific oceans which originated in the northern Atlantic and in the Southern Ocean. Based on PO4* we show that if ventilated Antarctic shelf waters characterize the Southern contribution, then the proportions could be close to 50-50. If instead a Southern Ocean bottom water value is used, the Southern contribution is increased to 75 %. While this larger estimate may best characterize the volume of water entering the Indo-Pacific from the Southern Ocean, it contains a significant portion of entrained northern water. We also note that ventilation may be highly tracer dependent: for instance Southern Ocean waters may contribute only 35% of the deep radiocarbon budget, even if their volumetric contribution is 75 %. In our estimation, the most promising approaches involve using CFC-11 to constrain the amount of deep water formed in the Southern Ocean. Finally, we highlight the broad utility of PO4* as a tracer of deep water masses, including descending plumes of Antarctic Bottom Water and large-scale patterns of deep ocean mixing, and as a tracer of the efficiency of the biological pump. 
PY 2018
PD JUL
SO Biogeosciences
SN 1726-4170
PU Copernicus Gesellschaft Mbh
VL 15
IS 12
UT 000435857800001
BP 3779
EP 3794
DI 10.5194/bg-15-3779-2018
ID 78684
ER

EF