Ocean Acidification Data Stewardship (OADS) Project

Research Topic: Climate Data & Information Records/Scientific Data Stewardship

Task Leader: Liqing Jiang

CICS Scientist: Liqing Jiang

Sponsor: NESDIS NCEI

Published Date: 9/26/2017

2017 ANNUAL REPORT

Background

The National Centers for Environmental Information (NCEI) developed and implemented a program for data management of global observations surrounding the acidification of the world’s oceans. Partial funding for this effort has been provided by NOAA’s Ocean Acidification Program (OAP). The goal is to ensure all data collected from OAP investment are properly archived and made accessible towards improved assessments of marine ecosystem vulnerability, and better forecasting capabilities, in accordance with the NOAA Plan for Public Access to Research Results (PARR) and the White House executive order on making data open and machine readable. This include dedicated support for data acquisition, quality assurance, management of rich metadata, application of controlled vocabularies, long-term archival, stable data citation, as well as online data discovery and access services. Under this funding effort, Dr. Liqing Jiang, CICS-MD, worked to develop standard data sharing guidelines, rich metadata using international standards to support human and machine data discovery and readability, and value-added scientific data sets for the ocean acidification research community.

Accomplishments

Published all of the submitted data sets over the last year into NCEI’s long-term archives, created rich metadata for these data sets and made sure they are discoverable and searchable: https://www.nodc.noaa.gov/oceanacidification/stewardship/oap_data.html

Revised the Ocean Acidification data search portal to enable link based search. Now a user can copy the link of some search results and get the same results in another browser.

Create new data management forms for PIs to use, so that they do not need to write lengthy data management plans: https://www.nodc.noaa.gov/oceanacidification/downloads.html

We published a peer-reviewed paper about how to document ocean acidification data.

We published a peer-reviewed paper about the how CO2 affects coral reef and human society in the coming century.

Planned work

The following areas will be addressed through this project:

Long-term preservation of future NOAA OAP data streams (i.e. scientific oversight of ocean acidification data submitted to NCEI);

Continual interaction with OA scientific community on data management requirements including implementation of data standards, rich metadata and data discovery.

Continue to improve the project data management infrastructure, including the website, display format, etc.

Publications

Pendleton, L., A. Comte, C. Langdon, J. Ekstrom, S. Cooley, L. Suatoni, M. Beck, L. Brander, L. Burke, J. Cinner, C. Doherty, P. Edwards, D. Gledhill, L.-Q. Jiang, R. Portela, R. van Hooidonk, L. Teh, G. Waldbusser. 2016. Coral reefs and people in a high CO2 world. PLoS ONE, 11(11): e0164699. doi:10.1371/journal.pone.0164699.

Jiang, L.-Q., K. M. Arzayus, J.-P. Gattuso, H. E. Garcia, C. Chandler, A. Kozyr, Y. Yang, R. Thomas, B. Beck, and T. Spears. 2016. How to document ocean acidification data. Limnology and Oceanography e-Lectures, doi:10.1002/loe2.10004.

Products

pH distributions, mechanisms and regressions in the global Ocean.We describe both surface and subsurface pH distributions in the global ocean based on the recently released Global Ocean Data Analysis Project Version 2 (GLODAPv2) database, and discuss the mechanisms that control them. Gridded surface ocean pH in the year of 2002 ranged between 7.77 and 8.35 globally, with an area-averaged surface pH of 8.08. Surface pH is mainly controlled by water temperature and the subsequent ratio of total alkalinity and dissolved inorganic carbon (TA/DIC). Vertically, pH is highest in the surface mixed layer, but unlike calcium carbonate saturation state, minimum pH is often found in mid-water depths ranging from 200 to 2000 m. Subsurface pH shows large differences among the major ocean basins. Aerobic respiration within the global thermohaline circulation plays a major role in shaping the subsurface pH distribution. In addition, subsurface pH is strongly controlled by temperature and pressure. Decreasing temperature with depth increases pH and increasing pressure lowers pH. Multi-Linear regression analyses in the subsurface data at 160 nodes show that temperature, salinity, pressure and dissolved oxygen account for the majority of the pH variations in the global subsurface ocean.

Presentations

Jiang, L.-Q., R. A. Feely, S. Lauvset, B. Carter, A. Olsen. 2017. pH distributions, mechanisms, and regressions in the global ocean, 2017 Aquatic Sciences Meeting, February 26 - March 3, 2017, in Honolulu, HI.

Jiang, L.-Q., K. M. Arzayus, H. Garcia, and J. Relph. 2016. NOAA Ocean Acidification Data Stewardship (OADS) Project, the 3rd Global Ocean Acidification Observing Network (GOA-ON) Science Workshop, May 8-10, 2016, Hobart, Tasmania, Australia.

Jiang, L.-Q., R. A. Feely, B. Carter, R. Wanninkhof, D. Gledhill, R. Key, and K. M. Arzayus. 2016. Climatological distribution of aragonite and calcite saturation states in the global oceans, 4th International Symposium on the Ocean in a High-CO2 World, May 3-6, 2016, Hobart, Tasmania, Australia.

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