![NCEP_RE/surface_temp](https://developers.google.com/earth-engine/datasets/images/NCEP_RE/NCEP_RE_surface_temp_sample.png)

Dataset Availability
:   1948-01-01T00:00:00Z--2026-03-18T00:00:00Z

Dataset Producer
:


    [NCEP](https://www.esrl.noaa.gov/psd/data/gridded/data.ncep.reanalysis.html)

Cadence
:   6 Hours

Tags
:
    [atmosphere](https://developers.google.com/earth-engine/datasets/tags/atmosphere) [climate](https://developers.google.com/earth-engine/datasets/tags/climate) [geophysical](https://developers.google.com/earth-engine/datasets/tags/geophysical) [ncep](https://developers.google.com/earth-engine/datasets/tags/ncep) [noaa](https://developers.google.com/earth-engine/datasets/tags/noaa) [reanalysis](https://developers.google.com/earth-engine/datasets/tags/reanalysis) [temperature](https://developers.google.com/earth-engine/datasets/tags/temperature) [weather-and-climate](https://developers.google.com/earth-engine/datasets/tags/weather-and-climate)

#### 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 March 2026. The data have 6-hour temporal
resolution (0000, 0600, 1200, and 1800 UTC) and 2.5 degree spatial
resolution.

NCEP discontinued this dataset in March 2026 and it is no longer being
updated.

### Bands

**Bands**

Pixel size: 278300 meters (all bands)

| Name | Units | Min | Max | Pixel Size | Description |
|---|---|---|---|---|---|
| `air` | K | 187.3\* | 323.5\* | 278300 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)077](https://doi.org/10.1175/1520-0477(1996)077%3C0437:TNYRP%3E2.0.CO;2)[0437:TNYRP\\](https://developers.google.com/earth-engine/datasets/catalog/0437:TNYRP%5C)2.0.CO;2.

### Explore with Earth Engine

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### Code Editor (JavaScript)

```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](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/NCEP_RE/NCEP_RE_surface_temp) [NCEP/NCAR Reanalysis Data, Surface Temperature \[deprecated\]](https://developers.google.com/earth-engine/datasets/catalog/NCEP_RE_surface_temp) 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,weather-and-climate 1948-01-01T00:00:00Z/2026-03-18T00:00:00Z -90 -180 90 180 Google Earth Engine https://developers.google.com/earth-engine/datasets

- [](https://doi.org/https://www.esrl.noaa.gov/psd/data/gridded/data.ncep.reanalysis.html)
- [](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/NCEP_RE_surface_temp)