HYCOM: Hybrid Coordinate Ocean Model, Water Temperature and Salinity

HYCOM/sea_temp_salinity
Dataset Availability
1992-10-02T00:00:00Z–2023-05-08T09:00:00Z
Dataset Provider
Earth Engine Snippet
ee.ImageCollection("HYCOM/sea_temp_salinity")
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