HYCOM: Hybrid Coordinate Ocean Model, Water Temperature and Salinity

HYCOM/sea_temp_salinity
Dataset Availability
1992-10-02T00:00:00Z–2024-09-05T09:00:00Z
Dataset Provider
Earth Engine Snippet
ee.ImageCollection("HYCOM/sea_temp_salinity")
Cadence
1 Day
Tags
hycom nopp ocean sst water
salinity
water-temp

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:

Bands

Resolution
8905.6 meters

Bands

Name Units Min Max Scale Offset Description
water_temp_0 °C -32768* 32763* 0.001 20

Sea water temperature at a depth of 0m
salinity_0 psu -20009* 32767* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 0m
water_temp_2 °C -32768* 32755* 0.001 20

Sea water temperature at a depth of 2m
salinity_2 psu -20002* 32767* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 2m
water_temp_4 °C -32768* 32746* 0.001 20

Sea water temperature at a depth of 4m
salinity_4 psu -20001* 32767* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 4m
water_temp_6 °C -32768* 32742* 0.001 20

Sea water temperature at a depth of 6m
salinity_6 psu -19991* 32767* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 6m
water_temp_8 °C -32768* 32741* 0.001 20

Sea water temperature at a depth of 8m
salinity_8 psu -19795* 32767* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 8m
water_temp_10 °C -32768* 32738* 0.001 20

Sea water temperature at a depth of 10m
salinity_10 psu -19624* 32767* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 10m
water_temp_12 °C -32768* 32735* 0.001 20

Sea water temperature at a depth of 12m
salinity_12 psu -19624* 32767* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 12m
water_temp_15 °C -32768* 32763* 0.001 20

Sea water temperature at a depth of 15m
salinity_15 psu -19624* 32767* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 15m
water_temp_20 °C -32768* 32715* 0.001 20

Sea water temperature at a depth of 20m
salinity_20 psu -18606* 32767* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 20m
water_temp_25 °C -32768* 32737* 0.001 20

Sea water temperature at a depth of 25m
salinity_25 psu -18131* 32767* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 25m
water_temp_30 °C -32768* 32754* 0.001 20

Sea water temperature at a depth of 30m
salinity_30 psu -17892* 32767* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 30m
water_temp_35 °C -32768* 32754* 0.001 20

Sea water temperature at a depth of 35m
salinity_35 psu -17874* 32767* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 35m
water_temp_40 °C -32768* 32674* 0.001 20

Sea water temperature at a depth of 40m
salinity_40 psu -17831* 32767* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 40m
water_temp_45 °C -32768* 32701* 0.001 20

Sea water temperature at a depth of 45m
salinity_45 psu -17831* 32767* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 45m
water_temp_50 °C -32768* 32237* 0.001 20

Sea water temperature at a depth of 50m
salinity_50 psu -17738* 32767* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 50m
water_temp_60 °C -32768* 32630* 0.001 20

Sea water temperature at a depth of 60m
salinity_60 psu -17733* 32767* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 60m
water_temp_70 °C -32768* 23172* 0.001 20

Sea water temperature at a depth of 70m
salinity_70 psu -17423* 24303* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 70m
water_temp_80 °C -32768* 27875* 0.001 20

Sea water temperature at a depth of 80m
salinity_80 psu -17326* 25320* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 80m
water_temp_90 °C -32768* 32393* 0.001 20

Sea water temperature at a depth of 90m
salinity_90 psu -16787* 26604* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 90m
water_temp_100 °C -32768* 31847* 0.001 20

Sea water temperature at a depth of 100m
salinity_100 psu -16717* 27143* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 100m
water_temp_125 °C -32768* 31469* 0.001 20

Sea water temperature at a depth of 125m
salinity_125 psu -14896* 30131* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 125m
water_temp_150 °C -32768* 31335* 0.001 20

Sea water temperature at a depth of 150m
salinity_150 psu -14712* 31215* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 150m
water_temp_200 °C -32768* 30029* 0.001 20

Sea water temperature at a depth of 200m
salinity_200 psu -14567* 30979* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 200m
water_temp_250 °C -32768* 21629* 0.001 20

Sea water temperature at a depth of 250m
salinity_250 psu -13198* 27945* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 250m
water_temp_300 °C -32768* 22796* 0.001 20

Sea water temperature at a depth of 300m
salinity_300 psu -220* 27712* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 300m
water_temp_350 °C -32768* 18501* 0.001 20

Sea water temperature at a depth of 350m
salinity_350 psu -136* 21866* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 350m
water_temp_400 °C -32768* 23875* 0.001 20

Sea water temperature at a depth of 400m
salinity_400 psu 0* 24711* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 400m
water_temp_500 °C -32768* 18663* 0.001 20

Sea water temperature at a depth of 500m
salinity_500 psu 0* 24929* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 500m
water_temp_600 °C -32768* 14251* 0.001 20

Sea water temperature at a depth of 600m
salinity_600 psu 0* 24128* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 600m
water_temp_700 °C -32768* 11300* 0.001 20

Sea water temperature at a depth of 700m
salinity_700 psu 0* 22350* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 700m
water_temp_800 °C -32768* 8630* 0.001 20

Sea water temperature at a depth of 800m
salinity_800 psu 0* 21959* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 800m
water_temp_900 °C -32768* 9544* 0.001 20

Sea water temperature at a depth of 900m
salinity_900 psu 0* 21965* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 900m
water_temp_1000 °C -32768* 7050* 0.001 20

Sea water temperature at a depth of 1000m
salinity_1000 psu 0* 21982* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 1000m
water_temp_1250 °C -32768* 8837* 0.001 20

Sea water temperature at a depth of 1250m
salinity_1250 psu 0* 22075* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 1250m
water_temp_1500 °C -23069* 12933* 0.001 20

Sea water temperature at a depth of 1500m
salinity_1500 psu 0* 20937* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 1500m
water_temp_2000 °C -25670* 4925* 0.001 20

Sea water temperature at a depth of 2000m
salinity_2000 psu 0* 20936* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 2000m
water_temp_2500 °C -32768* 0* 0.001 20

Sea water temperature at a depth of 2500m
salinity_2500 psu 0* 19073* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 2500m
water_temp_3000 °C -22062* 0* 0.001 20

Sea water temperature at a depth of 3000m
salinity_3000 psu 0* 19057* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 3000m
water_temp_4000 °C -21564* 0* 0.001 20

Sea water temperature at a depth of 4000m
salinity_4000 psu 0* 19012* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 4000m
water_temp_5000 °C -21469* 0* 0.001 20

Sea water temperature at a depth of 5000m
salinity_5000 psu 0* 15583* 0.001 20

Sea water salinity, in practical salinity units, at a depth of 5000m
* 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

Code Editor (JavaScript)

// Import the time series of global images, filter 15 days in August, 2018.
var dataset = ee.ImageCollection('HYCOM/sea_temp_salinity')
    .filter(ee.Filter.date('2018-08-01', '2018-08-15'));

// Select water temperature at 0 meters and scale to degrees C.
var seaWaterTemperature = dataset.select('water_temp_0')
    .map(function scaleAndOffset(image) {
      return ee.Image(image).multiply(0.001).add(20);
    });

// Define visualization parameters.
var visParams = {
  min: -2.0,  // Degrees C
  max: 34.0,
  palette: ['000000', '005aff', '43c8c8', 'fff700', 'ff0000'],
};

// Display mean 15-day temperature on the map.
Map.setCenter(-88.6, 26.4, 1);
Map.addLayer(seaWaterTemperature.mean(), visParams, 'Sea Water Temperature');
Open in Code Editor
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_temp_salinity, hycom,nopp,ocean,sst,water
1992-10-02T00:00:00Z/2024-09-05T09:00:00Z
-80.48 -180.0 80.48 180.0
Google Earth Engine