[null,null,[],[[["\u003cp\u003eThe NCEP/NCAR Reanalysis 1 project provides sea level pressure data from 1948 to the present, using a state-of-the-art analysis/forecast system.\u003c/p\u003e\n"],["\u003cp\u003eThis dataset has a temporal resolution of 6 hours (0000, 0600, 1200, and 1800 UTC) and a spatial resolution of 2.5 degrees.\u003c/p\u003e\n"],["\u003cp\u003eData is provided in mbar units and represents sea level pressure, accessible through the \u003ccode\u003eslp\u003c/code\u003e band.\u003c/p\u003e\n"],["\u003cp\u003eThis dataset is freely available for use without restrictions.\u003c/p\u003e\n"],["\u003cp\u003eThe project is a joint effort between the National Centers for Environmental Prediction (NCEP) and the National Center for Atmospheric Research (NCAR).\u003c/p\u003e\n"]]],[],null,["Dataset Availability\n: 1948-01-01T00:00:00Z--2025-09-02T18:00:00Z\n\nDataset Provider\n:\n\n\n [NCEP](https://www.esrl.noaa.gov/psd/data/gridded/data.ncep.reanalysis.html)\n\nCadence\n: 6 Hours\n\nTags\n:\n[atmosphere](/earth-engine/datasets/tags/atmosphere) [climate](/earth-engine/datasets/tags/climate) [geophysical](/earth-engine/datasets/tags/geophysical) [ncep](/earth-engine/datasets/tags/ncep) [noaa](/earth-engine/datasets/tags/noaa) [pressure](/earth-engine/datasets/tags/pressure) [reanalysis](/earth-engine/datasets/tags/reanalysis) \n\nDescription \nThe NCEP/NCAR Reanalysis Project is a joint project between the National\nCenters for Environmental Prediction (NCEP, formerly \"NMC\") and the\nNational Center for Atmospheric Research (NCAR). The goal of this joint\neffort is to produce new atmospheric analyses using historical data as\nwell as to produce analyses of the current atmospheric state (Climate Data\nAssimilation System, CDAS). The NCEP/NCAR Reanalysis 1 project is using a\nstate-of-the-art analysis/forecast system to perform data assimilation using\npast data from 1948 to the present. The data have 6-hour temporal\nresolution (0000, 0600, 1200, and 1800 UTC) and 2.5 degree spatial\nresolution.\n\nBands\n\n\n**Pixel Size**\n\n278300 meters\n\n**Bands**\n\n| Name | Units | Min | Max | Scale | Pixel Size | Description |\n|-------|-------|---------|----------|-------|------------|--------------------|\n| `slp` | mbar | 92590\\* | 112590\\* | 0.01 | meters | Sea level pressure |\n\n\\* estimated min or max value\n\nTerms of Use\n\n**Terms of Use**\n\nThere are no restrictions on the use of these datasets.\n\nCitations \nCitations:\n\n- Kalnay et al., 1996, The NCEP/NCAR 40-Year Reanalysis Project. Bull. Amer.\n Meteor. Soc., 77, 437-471.\n [doi:10.1175/1520-0477(1996)077](https://doi.org/10.1175/1520-0477(1996)077%3C0437:TNYRP%3E2.0.CO;2)[0437:TNYRP\\\\](/earth-engine/datasets/catalog/0437:TNYRP%5C)2.0.CO;2.\n\nExplore 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.](https://console.cloud.google.com/earth-engine)\n\nCode Editor (JavaScript) \n\n```javascript\nvar dataset = ee.ImageCollection('NCEP_RE/sea_level_pressure')\n .filter(ee.Filter.date('2018-08-01', '2018-08-15'));\nvar seaLevelPressure = dataset.select('slp');\nvar seaLevelPressureVis = {\n min: 96500.0,\n max: 104500.0,\n palette: ['800080', '0000ab', '008000', 'ffff00', 'ffa500', 'ff0000'],\n};\nMap.setCenter(-88.6, 26.4, 1);\nMap.addLayer(seaLevelPressure, seaLevelPressureVis, 'Sea Level Pressure');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/NCEP_RE/NCEP_RE_sea_level_pressure) \n[NCEP/NCAR Reanalysis Data, Sea-Level Pressure](/earth-engine/datasets/catalog/NCEP_RE_sea_level_pressure) \nThe NCEP/NCAR Reanalysis Project is a joint project between the National Centers for Environmental Prediction (NCEP, formerly \"NMC\") and the National Center for Atmospheric Research (NCAR). The goal of this joint effort is to produce new atmospheric analyses using historical data as well as to produce analyses of the current ... \nNCEP_RE/sea_level_pressure, atmosphere,climate,geophysical,ncep,noaa,pressure,reanalysis \n1948-01-01T00:00:00Z/2025-09-02T18:00:00Z \n-90 -180 90 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [](https://doi.org/https://www.esrl.noaa.gov/psd/data/gridded/data.ncep.reanalysis.html)\n- [](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/NCEP_RE_sea_level_pressure)"]]
