एनसीईपी/एनसीएआर रीऐनलिसिस प्रोजेक्ट, नैशनल सेंटर फ़ॉर एनवायरमेंटल प्रेडिक्शन (एनसीईपी, पहले "एनएमसी") और नैशनल सेंटर फ़ॉर एटमॉस्फ़ेरिक रिसर्च (एनसीएआर) का एक जॉइंट प्रोजेक्ट है. इस संयुक्त प्रयास का मकसद, पुराने डेटा का इस्तेमाल करके वायुमंडल का नया विश्लेषण करना है. साथ ही, वायुमंडल की मौजूदा स्थिति का विश्लेषण करना है (क्लाइमेट डेटा एसिमिलेशन सिस्टम, सीडीएएस). NCEP/NCAR Reanalysis 1 प्रोजेक्ट, डेटा एसिमिलेशन के लिए आधुनिक विश्लेषण/पूर्वानुमान सिस्टम का इस्तेमाल कर रहा है. इसके लिए, 1948 से लेकर अब तक के डेटा का इस्तेमाल किया जा रहा है. डेटा का समय के हिसाब से रिज़ॉल्यूशन छह घंटे (0000, 0600, 1200, और 1800 यूटीसी) और जगह के हिसाब से रिज़ॉल्यूशन 2.5 डिग्री है.
एनसीईपी/एनसीएआर रीऐनलिसिस प्रोजेक्ट, नैशनल सेंटर फ़ॉर एटमॉस्फ़ेरिक रिसर्च (एनसीएआर) और नैशनल सेंटर फ़ॉर एनवायरमेंटल प्रेडिक्शन (एनसीईपी, पहले "एनएमसी") का एक जॉइंट प्रोजेक्ट है. इस संयुक्त प्रयास का मकसद, पुराने डेटा का इस्तेमाल करके वायुमंडल का नया विश्लेषण करना है. साथ ही, मौजूदा … का विश्लेषण करना है
[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--2025-08-28T18:00:00Z\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/2025-08-28T18:00:00Z \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)"]]
