title: Reinterpretation of oceanic230Th profiles based on decadal export productivity (2003-2010).
abstract: Understanding230Th distributions in the global ocean is important to support and guide the use of this important radioactive nuclide in multiple aspects of oceanographic research, and this issue is now revisited. Based on estimates of export productivity (EP) over 2003-2010 and assuming230Th scavenging at equilibrium at seven Pacific stations where linear230Th profiles are found, an empirical equilibrium-state230Th-scavenging versus EP correlation is established. This correlation demonstrates the relationship between230Th-scavenging intensity and EP in the absence of advection. With this correlation, other230Th profiles from global oceans are reinterpreted. My findings provide alternative explanations of signals carried by230Th distributions with regard to advection, by a reassessment of the230Th deficits in deep waters. Such an equilibrium-state230Th-scavenging versus EP correlation provides a basis for convenient parameterization for use in 3D modeling studies of the230Th distributions.
authors.affiliation: Geophysical Institute, University of Bergen and Bjerknes Centre for Climate Research, Allegaten 70, 5020, Bergen, Norway. yiming.luo@uib.no.|Department of Oceanography, Dalhousie University, 1355 Oxford Street, Halifax, NS B3L2H4, Canada. yiming.luo@uib.no.
authors.forename: Yiming
authors.initials: Y
authors.lastname: Luo