An intensification trend of South Pacific Mode Water subduction rates over the 20th century
Article first published online: 18 JUL 2012
©2012. American Geophysical Union. All Rights Reserved.
Journal of Geophysical Research: Oceans (1978–2012)
Volume 117, Issue C7, July 2012
How to Cite
2012), An intensification trend of South Pacific Mode Water subduction rates over the 20th century, J. Geophys. Res., 117, C07009, doi:10.1029/2011JC007755., and (
- Issue published online: 18 JUL 2012
- Article first published online: 18 JUL 2012
- Manuscript Accepted: 29 MAY 2012
- Manuscript Revised: 28 MAY 2012
- Manuscript Received: 14 NOV 2011
 In this paper, the trend of the South Pacific Mode Water subduction rate is assessed based on recently developed ocean and atmosphere reanalysis products for the 20th century. It is found that the subduction volume of the mode water is intensified in the 20th century. The intensification of the mode water in the subtropical gyre of the South Pacific is primarily due to the strengthening of the vertical pumping velocity dominated by the enhanced wind stress curl over the past century. In contrast, the intensification of the South Pacific Subantarctic Mode Water (SAMW) is mainly caused by a deepening of the mixed layer depths and a strengthening of the advection in warm climate. As a result, the total subduction volume of the mode water over the South Pacific is increased in the 20th century.