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Multistressor Observations of Coastal Hypoxia and Acidification (MOCHA) Synthesis (NCEI Accession 0277984)

Metadata Updated: December 1, 2023

The California Current System (CCS) is a highly complex upwelling system supporting productive fisheries and high biodiversity, but it is vulnerable to warming, deoxygenation, and acidification. Data fragmentation and limited data availability constrain our understanding of when and where stressful coastal conditions manifest. Here, we present a large synthesis of compiled, formatted, and quality-controlled publicly available temperature, dissolved oxygen, and carbonate-system observations to create an accessible, high-resolution database for mapping marine climate stress in U.S. waters along the CCS. Only direct observations were included in this synthesis; no calculated data was retained. The synthesis includes 66 distinct data sources with observations from high resolution autonomous sensors, synoptic oceanographic cruises, and shore samples. Data has been organized across 13.7 million rows and 41 columns. Each row includes one or more individual oceanic parameter measurements accompanied by a dataset ID, which ties observations to their sources in the accompanying dataset Metadata Table, spatial and temporal information about the observations, the data collection method (cruise, mooring, etc.), and a habitat tag to identify estuarine datasets. Rows also include temperature, salinity, dissolved oxygen, carbonate-system, nutrient, and chlorophyll observations as available, along with quality flags and data collection methods for each included observation. Overall, this synthesis includes 13.1 million temperature observations, 3.6 million salinity, 3.3 million dissolved oxygen, 2.1 million pH, 8,485 dissolved inorganic carbon, 10,392 total alkalinity, and 113,000 pCO2 observations, with limited additional chlorophyll and nutrient observations. A summary dataset that provides daily averages of observations by location, depth, and project is also available (aggregated_daily_dataset.csv), along with geographic subsets of the full dataset. This synthesis dataset has been optimized for high-resolution coastal multiparameter investigations and will provide a valuable tool for assessing regional and local climate risk, evaluating the efficacy and completeness of CCS monitoring efforts, and investigating spatiotemporal scales of coastal oceanographic variability.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Date 2023-09-08T10:51:22Z
Metadata Created Date May 12, 2023
Metadata Updated Date December 1, 2023
Reference Date(s) May 22, 2023 (publication), September 8, 2023 (revision)
Frequency Of Update asNeeded

Metadata Source

Harvested from NOAA/NESDIS/ncei/accessions

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Additional Metadata

Resource Type Dataset
Metadata Date 2023-09-08T10:51:22Z
Metadata Created Date May 12, 2023
Metadata Updated Date December 1, 2023
Reference Date(s) May 22, 2023 (publication), September 8, 2023 (revision)
Responsible Party (Point of Contact)
Contact Email
Guid gov.noaa.nodc:0277984
Access Constraints Cite as: Kennedy, Esther G.; Zulian, Meghan; Hamilton, Sara L.; Hill, Tessa M.; Delgado, Manuel; Fish, Carina R.; Gaylord, Brian; Kroeker, Kristy J.; Palmer, Hannah M.; Ricart, Aurora M.; Sanford, Eric; Spalding, Ana K.; Ward, Melissa A.; Carrasco, Guadalupe; Elliott, Meredith; Grisby, Genece V.; Harris, Evan; Jahncke, Jaime; Rocheleau, Catherine N.; Westerink, Sebastian; Wilmot, Maddie I. (2023). Multistressor Observations of Coastal Hypoxia and Acidification (MOCHA) Synthesis (NCEI Accession 0277984). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. Accessed [date]., Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Bbox East Long -117.2
Bbox North Lat 48.49
Bbox South Lat 32
Bbox West Long -150
Coupled Resource
Frequency Of Update asNeeded
Graphic Preview Description Preview graphic
Graphic Preview File
Graphic Preview Type PNG
Harvest Object Id 6d7183d8-56cc-484e-847c-ee8cd51571ef
Harvest Source Id c084a438-6f6b-470d-93e0-16aeddb9f513
Harvest Source Title NOAA/NESDIS/ncei/accessions
Licence accessLevel: Public
Metadata Language eng
Metadata Type geospatial
Old Spatial {"type": "Polygon", "coordinates": [[[-150.0, 32.0], [-117.2, 32.0], [-117.2, 48.49], [-150.0, 48.49], [-150.0, 32.0]]]}
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 1949-02-28
Temporal Extent End 2020-12-31

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