Mathematics – Logic
Scientific paper
Jan 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3502610q&link_type=abstract
Geophysical Research Letters, Volume 35, Issue 2, CiteID L02610
Mathematics
Logic
8
Oceanography: Physical: Decadal Ocean Variability (1616, 1635, 3305, 4215), Oceanography: Physical: Upper Ocean And Mixed Layer Processes, Oceanography: Physical: Air/Sea Interactions (0312, 3339), Oceanography: Physical: General Circulation (1218, 1222)
Scientific paper
Using existing high-resolution CTD observations, complemented by a large amount of recently available Argo floating data, this study provides a detailed description of the subduction of South Pacific waters. With a significantly improved climatological dataset on the mixed layer properties, we obtain an annual subduction rate of 48.8 Sv (1 Sv = 106 m3 s-1) from 10°S to 60°S in the South Pacific. Two peaks stand out in this subduction rate sorted by winter mixed layer density: one corresponds to the formation of eastern Subtropical Mode Water (STMW) and part of the Subtropical Underwater (SUW) between 25.0 and 25.5 σ $\theta$ , and the other has a density range between 26.6 and 27.1 σ $\theta$ , representing the formation of Sub-Antarctic Mode Water and Antarctic Intermediate Water (SAMW/AAIW). The subduction in eastern STMW/SUW range is 12.7 Sv, only slightly smaller than that (14.6 Sv) associated with the SAMW/AAIW. Sandwiched between these two peaks, roughly in the density range between 26.0 and 26.5 σ $\theta$ , is the southwestern STMW, with a relatively small annual subduction of 5.6 Sv. Uncertainties of these estimates are discussed.
Fine Rana A.
Fukumori Ichiro
Gao Shan
Lindstrom Eric J.
Qu Tangdong
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