MBARI SECRET: Studies of Ecological and Chemical Responses to Environmental Trends 
(Quarterly observations on CalCOFI Line 67). In 1997 MBARI expanded hydrographic observations into the California Current. Quarterly cruises (cruise list) were scheduled in 1997-2008 to survey the areas offshore of Monterey Bay (map).

MBARI scientists collect samples for analysis of Salinity, Oxygen, TCO2 (DIC+DOC), Nutrients (Phosphate, Silicate, Nitrate, Nitrite, and Ammonium), Chlorophyll, C14 and N15 Primary Production, and surface Phytoplankton samples of A*, HPLC, POC, FCM, and Quanitative Phytoplankton (QP). From the underway surface water, pCO2 and fluorometeric samples are taken. These samples and the cruises they are collected on support the studies of physical, chemical and biological dynamics off the west coast of Central California and have resulted in a rich and consistent history of ocean dynamics, from seasonal variations to longterm trends, such as El Nino Southern Oscillation (ENSO) and the Pacifc Decadal Oscillation (PDO). Cycles which have direct effects on the coastal marine life and economy. (M. Blum, MBARI)