NCEP/NCAR Reanalysis Data, Surface Temperature

AI-generated Key Takeaways

• The NCEP/NCAR Reanalysis 1 project provides surface air temperature data from 1948 to the present, with a temporal resolution of 6 hours and a spatial resolution of 2.5 degrees.

• This dataset is a joint effort between the National Centers for Environmental Prediction (NCEP) and the National Center for Atmospheric Research (NCAR) to produce new atmospheric analyses using historical and current data.

• The data is available in Earth Engine and can be accessed using the ee.ImageCollection("NCEP_RE/surface_temp") code snippet.

• There are no restrictions on the use of this dataset.

Dataset Availability

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

Dataset Provider

NCEP

Earth Engine Snippet

ee.ImageCollection("NCEP_RE/surface_temp")

Cadence

6 Hours

Tags

atmosphere climate geophysical ncep noaa reanalysis temperature

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	Pixel Size	Description
air	K	187.3*	323.5*	meters	Surface air temperature

* 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/surface_temp')
                  .filter(ee.Filter.date('2018-08-01', '2018-08-15'));
var surfaceAirTemperature = dataset.select('air');
var surfaceAirTemperatureVis = {
  min: 230.0,
  max: 308.0,
  palette: [
    '800080', '0000ab', '0000ff', '008000', '19ff2b', 'a8f7ff', 'ffff00',
    'd6d600', 'ffa500', 'ff6b01', 'ff0000'
  ],
};
Map.setCenter(71.72, 52.48, 3.0);
Map.addLayer(
    surfaceAirTemperature, surfaceAirTemperatureVis, 'Surface Air Temperature');

Open in Code Editor

NCEP/NCAR Reanalysis Data, Surface Temperature

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/surface_temp, atmosphere,climate,geophysical,ncep,noaa,reanalysis,temperature

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

-90 -180 90 180

Google Earth Engine

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