Data Set (knb-lter-sbc.75.3)

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

  Summary and Data Links People and Organizations Temporal, Geographic and Taxonomic Coverage Methods and Protocols  
Data Set General Information:
Identifier: knb-lter-sbc.75.3 (in the knb Catalog System)
Alternate Identifier: DOI: 10.6073/pasta/9c82d94638d36878e3f691b888db5310
Alternate Identifier: knb-lter-sbc.75

Data are a time-series of pH and carbonate chemistry in manually-collected sea water samples from nine near-shore 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), total alkalinity and/or total CO2 (sum of carbon dioxide, bicarbonate and carbonate). 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).

Short Name: pH time series, water samples
Publication Date: 2018-02-22
Language: English
Time Period:
Detailed Data Description and Download:
water sample pH and CO2calc output
measured pH, alkalinity (or total CO2) from water samples with carbonate system parameters calculated by CO2calc for both laboratory (input) and in situ (adjusted) conditions
People and Organizations:
View complete information for all parties
Contact: Information Manager, Santa Barbara Coastal LTER [  email ]
Organization Santa Barbara Coastal LTER
Owner: Hofmann, Gretchen E 
Owner: Blanchette, Carol A 
Owner: Passow, Uta 
Owner: Washburn, Libe 
Owner: Lunden, Jay 
Owner: Rivest, Emily 
Owner: Kapsenberg, Lydia 

Data Set Citation

How to cite this data set: Hofmann, G. , C. Blanchette, U. Passow, L. Washburn, J. Lunden, E. Rivest and L. Kapsenberg. 2018. SBC LTER: pH time series: Water-sample pH and CO2 system chemistry, ongoing since 2011. Santa Barbara Coastal Long Term Ecological Research Project. doi:10.6073/pasta/9c82d94638d36878e3f691b888db5310

Key Words and Terms

By Thesaurus:
LTER Controlled Vocabulary v1 acidity, alkalinity, carbon dioxide, dissolved inorganic carbon, LTER, pH, Santa Barbara Coastal
SBC-LTER Controlled Vocabulary carbonate chemistry, OMEGAS
Santa Barbara Coastal LTER Places Alegria, Arroyo Quemado, Cambria, Coal Oil Point, Lompoc Landing, Mohawk, Purissima, Razors, Stearns Wharf
NBII Biocomplexity acidity, alkalinity

Data Set Usage Rights

This data package is released under the Creative Commons license Attribution 4.0 International (CC BY 4.0 , see This license states that consumers ("Data Users" herein) may distribute, adapt, reuse, remix, and build upon this work, as long as they give appropriate credit, provide a link to the license, and indicate if changes were made. If redistributed, a Data User may not apply additional restrictions or technological measures that prevent access.

The Data User has an ethical obligation to cite the data source appropriately in any publication or product that results from its use, and notify the data contact or creator. Communication, collaboration, or co-authorship (as appropriate) with the creators of this data package is encouraged to prevent duplicate research or publication. The Data User is urged to contact the authors of these data if any questions about methodology or results occur. The Data User should realize that these data may be actively used by others for ongoing research and that coordination may be necessary to prevent duplication or inappropriate use. The Data User should realize that misinterpretation may occur if data are used outside of the context of the original study. The Data User should be aware that data are updated periodically and it is the responsibility of the Data User to check for new versions of the data.

While substantial efforts are made to ensure the accuracy of data and associated documentation, complete accuracy of data sets cannot be guaranteed. This data package (with its components) is made available “as is” and with no warranty of accuracy or fitness for use. The creators of this data package and the repository where these data were obtained shall not be liable for any damages resulting from misinterpretation, use or misuse of the data package or its components.

Additional Metadata

Download the original XML file (in Ecological Metadata Language) Viewable in Oxygen XML Editor