SBC LTER: pH time series: Water-sample pH and CO2 system chemistry, ongoing since 2011

Data are a time-series of pH and carbonate chemistry in
manually-collected sea water samples from sixteen near-shore
locations and 20 locations along the Santa Barbara Channel,
California, USA, and intended to benchmark data from moored pH
instruments. Data collection began in June 2011 and is ongoing.
Time-series for pH sensors deployed in the field (e.g., SeaFET) are
available elsewhere.

Discrete seawater samples were collected by hand or using a Niskin
bottle. In the laboratory, samples were analyzed for pH (total
scale) and total alkalinity. Two parameters were used to calculate
the full suite of carbonate chemistry parameters using the CO2calc
algorithms. Program outputs are included for laboratory conditions
as input, and adjusted for situ temperature. See Methods for more
information, e.g., Lunden, et al.

Data were collected by a consortium of research groups with the
intent to leverage their collective assets and expertise. These
groups (and sponsors) include Santa Barbara Coastal LTER (NSF),
OMEGAS Project (NSF), Passow Lab (Calif. State Water Board), Hofmann
Lab (NSF, CINMS, US NPS).