HYCOM: Hybrid Coordinate Ocean Model, Sea Surface Elevation

AI-generated Key Takeaways

• The HYCOM dataset provides sea surface elevation, salinity, temperature, and velocity data from October 2, 1992, to September 5, 2024.

• Data is interpolated to a 0.08-degree latitude/longitude grid between 80.48°S and 80.48°N, with salinity, temperature, and velocity data further interpolated to 40 standard z-levels.

• The Hybrid Coordinate Ocean Model (HYCOM) is a data-assimilative model developed by the HYCOM Consortium, including the National Ocean Partnership Program (NOPP).

• This dataset is freely available for use without restrictions.

• Users can access and analyze HYCOM data within Google Earth Engine.

Dataset Availability

1992-10-02T00:00:00Z–2024-09-05T09:00:00Z

Dataset Provider

NOPP

Earth Engine Snippet

ee.ImageCollection("HYCOM/sea_surface_elevation")

Cadence

1 Day

Tags

elevation hycom nopp ocean oceans water

ssh

Description

The Hybrid Coordinate Ocean Model (HYCOM) is a data-assimilative hybrid isopycnal-sigma-pressure (generalized) coordinate ocean model. The subset of HYCOM data hosted in EE contains the variables salinity, temperature, velocity, and elevation. They have been interpolated to a uniform 0.08 degree lat/long grid between 80.48°S and 80.48°N. The salinity, temperature, and velocity variables have been interpolated to 40 standard z-levels.

The HYCOM Consortium, which includes the National Ocean Partnership Program (NOPP), is part of the U.S. Global Ocean Data Assimilation Experiment (GODAE).

Funded by the National Ocean Partnership Program, the Office of Naval Research (ONR), and DoD High Performance Computing Modernization Program.

For more information, see:

• hycom.org
• GIS StackExchange hycom
• Wikipedia HyCOM
• Wikipedia List of ocean circulation models
• Wikipedia Ocean general circulation model (OGCM)

Bands

Pixel Size
8905.6 meters

Bands

Name	Units	Min	Max	Scale	Pixel Size	Description
surface_elevation	m	-5681*	5965*	0.001	meters	Sea surface elevation anomaly relative to the modeled elevation mean

* estimated min or max value

Image Properties

Image Properties

Name	Type	Description
experiment	STRING	Experiment number

Terms of Use

Terms of Use

This dataset is freely available with no restrictions.

Citations

Citations:

• J. A. Cummings and O. M. Smedstad. 2013: Variational Data Assimilation for the Global Ocean. Data Assimilation for Atmospheric, Oceanic and Hydrologic Applications vol II, chapter 13, 303-343.

Explore with Earth Engine

Important: Earth Engine is a platform for petabyte-scale scientific analysis and visualization of geospatial datasets, both for public benefit and for business and government users. Earth Engine is free to use for research, education, and nonprofit use. To get started, please register for Earth Engine access.

Code Editor (JavaScript)

var dataset = ee.ImageCollection('HYCOM/sea_surface_elevation')
                  .filter(ee.Filter.date('2018-08-01', '2018-08-15'));
var surfaceElevation = dataset.select('surface_elevation');
var surfaceElevationVis = {
  min: -2000.0,
  max: 2000.0,
  palette: ['blue', 'cyan', 'yellow', 'red'],
};
Map.setCenter(-28.1, 28.3, 1);
Map.addLayer(surfaceElevation, surfaceElevationVis, 'Surface Elevation');

Open in Code Editor

HYCOM: Hybrid Coordinate Ocean Model, Sea Surface Elevation

The Hybrid Coordinate Ocean Model (HYCOM) is a data-assimilative hybrid isopycnal-sigma-pressure (generalized) coordinate ocean model. The subset of HYCOM data hosted in EE contains the variables salinity, temperature, velocity, and elevation. They have been interpolated to a uniform 0.08 degree lat/long grid between 80.48°S and 80.48°N. The salinity, temperature, and …

HYCOM/sea_surface_elevation, elevation,hycom,nopp,ocean,oceans,water

1992-10-02T00:00:00Z/2024-09-05T09:00:00Z

-80.48 -180 80.48 180

Google Earth Engine

https://developers.google.com/earth-engine/datasets