Methods Timeline.

Abstract

CalCOFI Time Series data are over 67 years old. New adopted practices, methods, software and hardware are thoroughly tested to maintain dataset continuity as the program & science evolves. Core measurements are maintained and many new measurements added. CTD temperature sensors, for example, provide data at a much higher resolution than a 20 bottle hydrocast equipped with reversing thermometers pre-9308 (Aug 1993).

Although the CTDs casts on CalCOFI started in 1990, CTD-rosette casts did not replace bottles-on-wire hydro casts completely until Aug 1993 (9308). In 2004, LTER joined the CalCOFI cruises, expanding the seawater analyses, adding new measurements.

Changes of standard practices, methods, software, & equipment will be tabulated here, particularly those affecting the hydrographic data or other data products.