PACIFICA Data Synthesis Project

PACIFICA (PACIFic ocean Interior CArbon) was an international collaborative project for the data synthesis of ocean interior carbon and its related parameters in the Pacific Ocean. The North Pacific Marine Science Organization (PICES), Section on Carbon and Climate (S-CC) supported the project. We have merged hydrographic/hydrochemical datasets from a total 213 cruise, including those from cruises conducted between the late 1980s and 2000 but not stored in GLODAP, as well as CLIVAR/CO₂ Repeat Hydrography in 2000s. The adjustment values were estimated for the analytical offsets in the data of dissolved inorganic carbon, total alkalinity, salinity, oxygen and nutrients (nitrate and nitrite, phosphate, and silicic acid) for each cruise as a result of the secondary quality control procedure, based on the crossover analysis for the data from deep layers (Tanhua et.al., 2010). We also merged a total 59 adjusted datasets from Line P off the west coast of Canada. Finally, we have produced the adjusted PACIFICA database that consists of datasets from a total of 306 cruises that also including 34 datasets from WOCE Hydrographic Program cruises in the Pacific Ocean conducted in the 1990s.

The PACIFICA database is available free of charge as a numeric data package (NDP-92) from the OCADS (Ocean Carbon Data System; formerly CDIAC-Oceans) and PACIFICA web sites. The NDP consists of the original cruise data files, adjusted data products, and this documentation, which describes the PACIFICA project.

Please reference the PACIFICA data and data products using:

Suzuki, T., M. Ishii, M. Aoyama, J. R. Christian, K. Enyo, T. Kawano, R. M. Key, N. Kosugi, A. Kozyr, L. A. Miller, A. Murata, T. Nakano, T. Ono, T. Saino, K. Sasaki, D. Sasano, Y. Takatani, M. Wakita and C. L. Sabine. 2013. PACIFICA Data Synthesis Project. ORNL/CDIAC-159, NDP-092. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tennessee. doi:10.3334/CDIAC/OTG.PACIFICA_NDP092

Keywords: PACIFICA, dissolved inorganic carbon, total alkalinity, nutrients, dissolved oxygen, WOCE, GLODAP, CLIVAR, Pacific Ocean