NCEP/NCAR Reanalysis Data, Sea-Level Pressure

AI-generated Key Takeaways

• The NCEP/NCAR Reanalysis 1 project provides sea level pressure data from 1948 to the present, using a state-of-the-art analysis/forecast system.

• This dataset has a temporal resolution of 6 hours (0000, 0600, 1200, and 1800 UTC) and a spatial resolution of 2.5 degrees.

• Data is provided in mbar units and represents sea level pressure, accessible through the slp band.

• This dataset is freely available for use without restrictions.

• The project is a joint effort between the National Centers for Environmental Prediction (NCEP) and the National Center for Atmospheric Research (NCAR).

Dataset Availability

1948-01-01T00:00:00Z–2025-09-30T18:00:00Z

Dataset Provider

NCEP

Earth Engine Snippet

ee.ImageCollection("NCEP_RE/sea_level_pressure")

Cadence

6 Hours

Tags

atmosphere climate geophysical ncep noaa pressure reanalysis

Description

The 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 atmospheric state (Climate Data Assimilation System, CDAS). The NCEP/NCAR Reanalysis 1 project is using a state-of-the-art analysis/forecast system to perform data assimilation using past data from 1948 to the present. The data have 6-hour temporal resolution (0000, 0600, 1200, and 1800 UTC) and 2.5 degree spatial resolution.

Bands

Pixel Size
278300 meters

Bands

Name	Units	Min	Max	Scale	Pixel Size	Description
slp	mbar	92590*	112590*	0.01	meters	Sea level pressure

* estimated min or max value

Terms of Use

Terms of Use

There are no restrictions on the use of these datasets.

Citations

Citations:

• Kalnay et al., 1996, The NCEP/NCAR 40-Year Reanalysis Project. Bull. Amer. Meteor. Soc., 77, 437-471. doi:10.1175/1520-0477(1996)0770437:TNYRP\2.0.CO;2.

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Code Editor (JavaScript)

var dataset = ee.ImageCollection('NCEP_RE/sea_level_pressure')
                  .filter(ee.Filter.date('2018-08-01', '2018-08-15'));
var seaLevelPressure = dataset.select('slp');
var seaLevelPressureVis = {
  min: 96500.0,
  max: 104500.0,
  palette: ['800080', '0000ab', '008000', 'ffff00', 'ffa500', 'ff0000'],
};
Map.setCenter(-88.6, 26.4, 1);
Map.addLayer(seaLevelPressure, seaLevelPressureVis, 'Sea Level Pressure');

Open in Code Editor

NCEP/NCAR Reanalysis Data, Sea-Level Pressure

The 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 …

NCEP_RE/sea_level_pressure, atmosphere,climate,geophysical,ncep,noaa,pressure,reanalysis

1948-01-01T00:00:00Z/2025-09-30T18:00:00Z

-90 -180 90 180

Google Earth Engine

https://developers.google.com/earth-engine/datasets