A coastal ocean climatology of oxygen in the Southern California Bight is estimated from oxygen sample profiles collected by historical California Cooperative Oceanic Fisheries Investigation (CalCOFI) cruises (1950–2009; quarterly after 1984) off southern California and quarterly/monthly nearshore CTD surveys (within 30 km from the coast except for the surfzone; 1999–2009) off San Diego and Los Angeles. The oxygen time series are decomposed into linear combinations of an annual cycle and its five harmonics, as well as three standard climate indices (El Nino-Southern Oscillation (ENSO), Pacific Decadal Oscillation (PDO), North Pacific Gyre Oscillation (NPGO)), the Scripps Pier temperature time series, and a mean and linear trend without time lags. Following the multivariate regression in Kim and Cornuelle [2015], the basis functions are prepared with successively orthogonalized to eliminate ambiguity and overlapped variance in the identification of the contributed variance of each component. The regression coefficients are used to examine the near-shore and offshore variability of oxygen and consistency in a view of vertical transects.

Primary Presenter: Sung Yong Kim, Korea Advanced Institute of Science and Technology (syongkim@kaist.ac.kr)

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