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Coastal Ocean Reanalysis (CORA)

Published by Center for Operational Oceanographic Products and Services | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: December 19, 2025 | Last Modified: 2024-01-01T00:00:00.000+00:00

NOAA's Coastal Ocean Reanalysis (CORA) couples long-term water level observations with hydrodynamic modeling to create historical information between tide stations to bridge gaps in service and serve the Nation's coastal communities effectively and accurately. CORA water levels are simulated with ADvanced CIRCulation (ADCIRC) for ocean circulation modeling and coupled with a phase-averaging model called Simulating WAves Nearshore (SWAN) to produce surface gravity wave spectra and account for time-averaged wave contributions. Coastal water level observations from NOAA's Center for Operational Oceanographic Products and Services (CO-OPS) National Water Level Observation Network (NWLON) are low-pass filtered and assimilated into the model to account for long-term sea level variability and to reduce model errors, and validate results. The domain of this reanalysis spans the Gulf, Atlantic (East), and Caribbean coastlines (or CORA-GEC). The reanalysis (1979-2022) was performed through the partnership of NOAA National Ocean Service (NOS) and University of North Carolina's (UNC) Institute of Marine Sciences and Renaissance Computing Institute (RENCI). Validation of CORA-GEC water levels compared to tide gauge observations was conducted in collaboration with the University of Hawaii Sea Level Center (UHSLC). This modeled dataset, also provides hourly water levels for unstructured grid nodes along state shorelines and in 500m structured grids. Secondary derived datasets including daily maximums (daily maxes), monthly statistics, and peak over thresholds are included for the structured 500m grids. Tidal datums, extreme water levels and sub-seasonal to annual high tide flooding predictions and outlooks are also among the derived products to be added. Moreover, the domain of the analysis will be expanded to the Pacific and the dataset to be included when it becomes available.

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Complete Metadata

@type	dcat:Dataset
accessLevel	non-public
contactPoint	{ "fn": "Not provided - Contact data.gov", "hasEmail": "mailto:datagovsupport@gsa.gov" }
describedByType	application/octet-steam
description	NOAA's Coastal Ocean Reanalysis (CORA) couples long-term water level observations with hydrodynamic modeling to create historical information between tide stations to bridge gaps in service and serve the Nation's coastal communities effectively and accurately. CORA water levels are simulated with ADvanced CIRCulation (ADCIRC) for ocean circulation modeling and coupled with a phase-averaging model called Simulating WAves Nearshore (SWAN) to produce surface gravity wave spectra and account for time-averaged wave contributions. Coastal water level observations from NOAA's Center for Operational Oceanographic Products and Services (CO-OPS) National Water Level Observation Network (NWLON) are low-pass filtered and assimilated into the model to account for long-term sea level variability and to reduce model errors, and validate results. The domain of this reanalysis spans the Gulf, Atlantic (East), and Caribbean coastlines (or CORA-GEC). The reanalysis (1979-2022) was performed through the partnership of NOAA National Ocean Service (NOS) and University of North Carolina's (UNC) Institute of Marine Sciences and Renaissance Computing Institute (RENCI). Validation of CORA-GEC water levels compared to tide gauge observations was conducted in collaboration with the University of Hawaii Sea Level Center (UHSLC). This modeled dataset, also provides hourly water levels for unstructured grid nodes along state shorelines and in 500m structured grids. Secondary derived datasets including daily maximums (daily maxes), monthly statistics, and peak over thresholds are included for the structured 500m grids. Tidal datums, extreme water levels and sub-seasonal to annual high tide flooding predictions and outlooks are also among the derived products to be added. Moreover, the domain of the analysis will be expanded to the Pacific and the dataset to be included when it becomes available.
distribution	[ { "@type": "dcat:Distribution", "title": "https://registry.opendata.aws/noaa-nos-cora/", "mediaType": "placeholder/value", "description": "NOAA Open Data Dissemination (NODD) Program Description page.", "downloadURL": "https://registry.opendata.aws/noaa-nos-cora/", "describedByType": "application/octet-steam" }, { "@type": "dcat:Distribution", "title": "https://tidesandcurrents.noaa.gov/cora.html", "accessURL": "https://tidesandcurrents.noaa.gov/cora.html", "description": "This is the landing page for CORA with additional resources.", "describedByType": "application/octet-steam" }, { "@type": "dcat:Distribution", "title": "https://noaa-nos-cora-pds.s3.amazonaws.com/index.html", "accessURL": "https://noaa-nos-cora-pds.s3.amazonaws.com/index.html", "description": "NOAA Open Data Dissemination (NODD) Program Amazon Web Services (AWS) Server Direct Link. 'V1.1' is the latest version of the dataset and is available in NetCDF format.", "describedByType": "application/octet-steam" }, { "@type": "dcat:Distribution", "title": "https://github.com/NOAA-CO-OPS/CORA-Coastal-Ocean-ReAnalysis-CORA", "mediaType": "placeholder/value", "description": "GitHub repository for accessing and visualizing data", "downloadURL": "https://github.com/NOAA-CO-OPS/CORA-Coastal-Ocean-ReAnalysis-CORA", "describedByType": "application/octet-steam" }, { "@type": "dcat:Distribution", "title": "NOAA Data Management Plan (DMP)", "mediaType": "placeholder/value", "description": "NOAA Data Management Plan for this record on InPort.", "downloadURL": "https://www.fisheries.noaa.gov/inportserve/waf/noaa/nos/co-ops/dmp/pdf/75048.pdf", "describedByType": "application/octet-steam" }, { "@type": "dcat:Distribution", "title": "GCMD Keyword Forum Page", "mediaType": "placeholder/value", "description": "Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords", "downloadURL": "https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords", "describedByType": "application/octet-steam" }, { "@type": "dcat:Distribution", "title": "Full Metadata Record", "mediaType": "placeholder/value", "description": "View the complete metadata record on InPort for more information about this dataset.", "downloadURL": "https://www.fisheries.noaa.gov/inport/item/75048", "describedByType": "application/octet-steam" }, { "@type": "dcat:Distribution", "title": "Tides and Currents", "mediaType": "placeholder/value", "description": "Website listed for Center for Operational Oceanographic Products and Services", "downloadURL": "https://tidesandcurrents.noaa.gov/", "describedByType": "application/octet-steam" } ]
identifier	gov.noaa.nmfs.inport:75048
issued	2024-01-01T00:00:00.000+00:00
keyword	[ "EARTH SCIENCE", "EARTH SCIENCE > CLIMATE INDICATORS > ATMOSPHERIC/OCEAN INDICATORS > SEA LEVEL RISE", "EARTH SCIENCE > CLIMATE INDICATORS > ATMOSPHERIC/OCEAN INDICATORS > SEA LEVEL RISE > INUNDATION", "EARTH SCIENCE > OCEANS > OCEAN WAVES > STORM SURGE", "EARTH SCIENCE > OCEANS > OCEAN WAVES > WAVE DIRECTION", "EARTH SCIENCE > OCEANS > OCEAN WAVES > WAVE FREQUENCY", "EARTH SCIENCE > OCEANS > OCEAN WAVES > WAVE HEIGHT", "EARTH SCIENCE > OCEANS > OCEAN WAVES > WAVE PERIOD", "EARTH SCIENCE > OCEANS > OCEAN WAVES > WAVE RUNUP", "EARTH SCIENCE > OCEANS > OCEAN WAVES > WAVE SPECTRA", "EARTH SCIENCE > OCEANS > OCEAN WAVES > WAVE SPEED/DIRECTION", "EARTH SCIENCE > OCEANS > SEA SURFACE TOPOGRAPHY > SEA LEVEL > MEAN SEA LEVEL", "EARTH SCIENCE > OCEANS > SEA SURFACE TOPOGRAPHY > SEA LEVEL > SEA LEVEL ANOMALY", "EARTH SCIENCE > OCEANS > SEA SURFACE TOPOGRAPHY > SEA SURFACE HEIGHT", "EARTH SCIENCE > OCEANS > SEA SURFACE TOPOGRAPHY > SEA SURFACE HEIGHT > SEA SURFACE HEIGHT ANOMALY (SSHA)", "EARTH SCIENCE > OCEANS > TIDES > STORM SURGE", "EARTH SCIENCE > OCEANS > TIDES > TIDAL HEIGHT", "EARTH SCIENCE > OCEANS > TIDES > TIDAL RANGE", "EARTH SCIENCE > SOLID EARTH > GEOMORPHIC LANDFORMS/PROCESSES > COASTAL PROCESSES > WAVE EROSION", "EARTH SCIENCE > SOLID EARTH > GEOMORPHIC LANDFORMS/PROCESSES > COASTAL PROCESSES > WAVE EROSION > DEGRADATION", "EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER PROCESSES/MEASUREMENTS > INUNDATION > INUNDATION AMOUNT", "DOC/NOAA/NOS/CO-OPS > Center for Operational Oceanographic Products and Services, National Ocean Service, NOAA, U.S. Department of Commerce", "CO-OPS Metadata Library" ]
landingPage	https://www.fisheries.noaa.gov/inport/item/75048
language	[]
license	https://creativecommons.org/publicdomain/zero/1.0/
modified	2024-01-01T00:00:00.000+00:00
publisher	{ "name": "Center for Operational Oceanographic Products and Services", "@type": "org:Organization" }
references	[ "https://www.fisheries.noaa.gov/inportserve/waf/noaa/nos/co-ops/dmp/pdf/75048.pdf" ]
rights	otherRestrictions, unclassified
spatial	-53.8,5.8,-98.0,45.8
temporal	1978-01-01T00:00:00+00:00/2022-01-01T00:00:00+00:00
title	Coastal Ocean Reanalysis (CORA)