מודל האוקיינוס עם קואורדינטות היברידיות (HYCOM) הוא מודל אוקיינוס עם קואורדינטות היברידיות (כלליות) של לחץ סיגמא איזופיקנלי, שמשלב נתונים. קבוצת המשנה של נתוני HYCOM שמתארחים ב-EE מכילה את המשתנים salinity, temperature, velocity ו-elevation. הם עברו אינטרפולציה לרשת אחידה של 0.08 מעלות בקו הרוחב ובקו האורך בין 80.48°S ל-80.48°N. המשתנים של המליחות, הטמפרטורה והמהירות עברו אינטרפולציה ל-40 רמות z סטנדרטיות.
קונסורציום HYCOM, שכולל את National Ocean Partnership Program (NOPP), הוא חלק מ-U.S. Global Ocean Data Assimilation Experiment (GODAE).
המחקר ממומן על ידי National Ocean Partnership Program, Office of Naval
Research (ONR) ו-DoD High Performance Computing Modernization Program.
י. א. קאמינגס ואו. מ. סמדסטד. 2013: Variational Data Assimilation for the Global Ocean. Data Assimilation for Atmospheric, Oceanic and Hydrologic
Applications vol II, chapter 13, 303-343.
מודל האוקיינוס ההיברידי של קואורדינטות (HYCOM) הוא מודל אוקיינוס היברידי של קואורדינטות איזופיקנליות-סיגמה-לחץ (מוכללות) שמשלב נתונים. קבוצת המשנה של נתוני HYCOM שמתארחת ב-EE מכילה את המשתנים salinity (מליחות), temperature (טמפרטורה), velocity (מהירות) ו-elevation (גובה). הנתונים עברו אינטרפולציה לרשת אחידה של 0.08 מעלות בקו הרוחב ובקו האורך, בין 80.48°S ל-80.48°N. המליחות, הטמפרטורה ו…
[null,null,[],[[["\u003cp\u003eThe HYCOM dataset provides sea surface elevation, salinity, temperature, and velocity data from October 2, 1992, to September 5, 2024.\u003c/p\u003e\n"],["\u003cp\u003eData 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.\u003c/p\u003e\n"],["\u003cp\u003eThe Hybrid Coordinate Ocean Model (HYCOM) is a data-assimilative model developed by the HYCOM Consortium, including the National Ocean Partnership Program (NOPP).\u003c/p\u003e\n"],["\u003cp\u003eThis dataset is freely available for use without restrictions.\u003c/p\u003e\n"],["\u003cp\u003eUsers can access and analyze HYCOM data within Google Earth Engine.\u003c/p\u003e\n"]]],["The dataset, available from 1992-10-02 to 2024-09-05, provides daily sea surface elevation data from the Hybrid Coordinate Ocean Model (HYCOM), a product of the NOPP. It includes salinity, temperature, velocity, and elevation, interpolated to a 0.08-degree grid between 80.48°S and 80.48°N. The surface elevation band, measured in meters, has an estimated range between -5681 to 5965, with a pixel size of 8905.6 meters. Data is freely available without restrictions.\n"],null,["# HYCOM: Hybrid Coordinate Ocean Model, Sea Surface Elevation\n\nDataset Availability\n: 1992-10-02T00:00:00Z--2024-09-05T09:00:00Z\n\nDataset Provider\n:\n\n\n [NOPP](https://hycom.org/)\n\nCadence\n: 1 Day\n\nTags\n:\n [elevation](/earth-engine/datasets/tags/elevation) [hycom](/earth-engine/datasets/tags/hycom) [nopp](/earth-engine/datasets/tags/nopp) [ocean](/earth-engine/datasets/tags/ocean) [oceans](/earth-engine/datasets/tags/oceans) [water](/earth-engine/datasets/tags/water) \nssh \n\n#### Description\n\nThe Hybrid Coordinate Ocean Model (HYCOM) is a data-assimilative hybrid\nisopycnal-sigma-pressure (generalized) coordinate ocean model. The subset\nof HYCOM data hosted in EE contains the variables salinity, temperature,\nvelocity, and elevation. They have been interpolated to a uniform\n0.08 degree lat/long grid between 80.48°S and 80.48°N. The salinity,\ntemperature, and velocity variables have been interpolated to 40\nstandard z-levels.\n\nThe HYCOM Consortium, which includes the National Ocean Partnership\nProgram (NOPP), is part of the U.S. Global Ocean Data Assimilation\nExperiment (GODAE).\n\nFunded by the National Ocean Partnership Program, the Office of Naval\nResearch (ONR), and DoD High Performance Computing Modernization Program.\n\nFor more information, see:\n\n- [hycom.org](https://www.hycom.org/)\n- [GIS StackExchange hycom](https://gis.stackexchange.com/questions/tagged/hycom)\n- Wikipedia [HyCOM](https://en.wikipedia.org/wiki/HyCOM)\n- Wikipedia [List of ocean circulation models](https://en.wikipedia.org/wiki/List_of_ocean_circulation_models)\n- Wikipedia [Ocean general circulation model (OGCM)](https://en.wikipedia.org/wiki/Ocean_general_circulation_model)\n\n### Bands\n\n\n**Pixel Size**\n\n8905.6 meters\n\n**Bands**\n\n| Name | Units | Min | Max | Scale | Pixel Size | Description |\n|---------------------|-------|---------|--------|-------|------------|----------------------------------------------------------------------|\n| `surface_elevation` | m | -5681\\* | 5965\\* | 0.001 | meters | Sea surface elevation anomaly relative to the modeled elevation mean |\n\n\\* estimated min or max value\n\n### Image Properties\n\n**Image Properties**\n\n| Name | Type | Description |\n|------------|--------|-------------------|\n| experiment | STRING | Experiment number |\n\n### Terms of Use\n\n**Terms of Use**\n\nThis dataset is freely available with no restrictions.\n\n### Citations\n\nCitations:\n\n- J. A. Cummings and O. M. Smedstad. 2013: Variational Data Assimilation for\n the Global Ocean. Data Assimilation for Atmospheric, Oceanic and Hydrologic\n Applications vol II, chapter 13, 303-343.\n\n### Explore with Earth Engine\n\n| **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.](https://console.cloud.google.com/earth-engine)\n\n### Code Editor (JavaScript)\n\n```javascript\nvar dataset = ee.ImageCollection('HYCOM/sea_surface_elevation')\n .filter(ee.Filter.date('2018-08-01', '2018-08-15'));\nvar surfaceElevation = dataset.select('surface_elevation');\nvar surfaceElevationVis = {\n min: -2000.0,\n max: 2000.0,\n palette: ['blue', 'cyan', 'yellow', 'red'],\n};\nMap.setCenter(-28.1, 28.3, 1);\nMap.addLayer(surfaceElevation, surfaceElevationVis, 'Surface Elevation');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/HYCOM/HYCOM_sea_surface_elevation) \n[HYCOM: Hybrid Coordinate Ocean Model, Sea Surface Elevation](/earth-engine/datasets/catalog/HYCOM_sea_surface_elevation) \nThe 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 ... \nHYCOM/sea_surface_elevation, elevation,hycom,nopp,ocean,oceans,water \n1992-10-02T00:00:00Z/2024-09-05T09:00:00Z \n-80.48 -180 80.48 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [](https://doi.org/https://hycom.org/)\n- [](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/HYCOM_sea_surface_elevation)"]]
