The hard work of all contributors to the collection and processing of hydrographic section data analyzed here is gratefully acknowledged. The 1990s data were collected as part of the World Ocean Circulation Experiment (WOCE) Hydrographic Program, and the 1980s Marathon II expedition data, measured to WOCE standards, were adopted by that program. The 2001 reoccupation of WOCE section P15S was a contribution of the Australian Climate Change Research Program. The 2003 reoccupation of WOCE section P06 was part of the Blue Earth Global Expedition (BEAGLE) organized by Japan Agency for Marine-Earth Science and Technology (JAMSTEC). The 2004 reoccupation of WOCE section P02, as well as the 2005 and 2006 reoccupations of WOCE section P16, were part of the NOAA/NSF-funded U.S. CLIVAR/CO2 Repeat Hydrography Program. The comments of three anonymous reviewers improved the manuscript. The NOAA Office of Oceanic and Atmospheric Research and the NOAA Climate Program Office further supported GCJ and SM. The findings and conclusions in this article are those of the authors and do not necessarily represent the views of the National Oceanic and Atmospheric Administration. BMS and SEW were partly funded by the Australian Climate Change Science Program. This paper is a contribution to the CSIRO Climate Change Research Program and the CSIRO Wealth from Oceans Flagship.
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