![NASA/NLDAS/FORA0125_H002](https://developers.google.com/earth-engine/datasets/images/NASA/NASA_NLDAS_FORA0125_H002_sample.png) Dataset Availability : 1979-01-01T13:00:00Z--2026-11-08T12:00:00Z Dataset Producer : [NASA GES DISC at NASA Goddard Space Flight Center](https://doi.org/10.5067/6J5LHHOHZHN4) Cadence : 1 Hour Tags : [climate](https://developers.google.com/earth-engine/datasets/tags/climate.md.txt) [evaporation](https://developers.google.com/earth-engine/datasets/tags/evaporation.md.txt) [forcing](https://developers.google.com/earth-engine/datasets/tags/forcing.md.txt) [geophysical](https://developers.google.com/earth-engine/datasets/tags/geophysical.md.txt) [hourly](https://developers.google.com/earth-engine/datasets/tags/hourly.md.txt) [humidity](https://developers.google.com/earth-engine/datasets/tags/humidity.md.txt) [ldas](https://developers.google.com/earth-engine/datasets/tags/ldas.md.txt) [nasa](https://developers.google.com/earth-engine/datasets/tags/nasa.md.txt) [precipitation](https://developers.google.com/earth-engine/datasets/tags/precipitation.md.txt) [pressure](https://developers.google.com/earth-engine/datasets/tags/pressure.md.txt) [radiation](https://developers.google.com/earth-engine/datasets/tags/radiation.md.txt) [soil](https://developers.google.com/earth-engine/datasets/tags/soil.md.txt) [temperature](https://developers.google.com/earth-engine/datasets/tags/temperature.md.txt) [water-vapor](https://developers.google.com/earth-engine/datasets/tags/water-vapor.md.txt) [weather-and-climate](https://developers.google.com/earth-engine/datasets/tags/weather-and-climate.md.txt) [wind](https://developers.google.com/earth-engine/datasets/tags/wind.md.txt) nldas #### Description Land Data Assimilation System (LDAS) combines multiple sources of observations (such as precipitation gauge data, satellite data, and radar precipitation measurements) to produce estimates of climatological properties at or near the Earth''s surface. This dataset is the primary (default) forcing file (File A) for Phase 2 of the North American Land Data Assimilation System (NLDAS-2). The data are in 1/8th-degree grid spacing; the temporal resolution is hourly. NLDAS is a collaboration project among several groups: NOAA/NCEP''s Environmental Modeling Center (EMC), NASA''s Goddard Space Flight Center (GSFC), Princeton University, the University of Washington, the NOAA/NWS Office of Hydrological Development (OHD), and the NOAA/NCEP Climate Prediction Center (CPC). NLDAS is a core project with support from NOAA''s Climate Prediction Program for the Americas (CPPA). Documentation: - [Readme](https://hydro1.gesdisc.eosdis.nasa.gov/data/NLDAS/README.NLDAS2.pdf) - [How-To](https://disc.gsfc.nasa.gov/information/howto?tags=hydrology) - [GES DISC Hydrology Documentation](https://disc.gsfc.nasa.gov/information/documents?title=Hydrology+Documentation) - [GES DISC Data Rods Documentation](https://disc.gsfc.nasa.gov/information/tools?title=Hydrology+Data+Rods) ### Bands **Bands** Pixel size: 13915 meters (all bands) | Name | Units | Min | Max | Pixel Size | Description | |---|---|---|---|---|---| | `temperature` | °C | -49.79\* | 51.2\* | 13915 meters | Air temperature at 2 meters above the surface | | `specific_humidity` | Mass fraction | 0\* | 0.02\* | 13915 meters | Specific humidity at 2 meters above the surface | | `pressure` | Pa | 61847.6\* | 105338\* | 13915 meters | Surface pressure | | `wind_u` | m/s | -27.93\* | 27.54\* | 13915 meters | U wind component at 10 meters above the surface | | `wind_v` | m/s | -27.45\* | 35.13\* | 13915 meters | V wind component at 10 meters above the surface | | `longwave_radiation` | W/m\^2 | 72.18\* | 545.11\* | 13915 meters | Surface downward longwave radiation | | `convective_fraction` | | 0\* | 1\* | 13915 meters | Fraction of total precipitation that is convective: from NARR | | `potential_energy` | J/kg | 0\* | 76666.2\* | 13915 meters | Convective available potential energy (J/kg): from NARR | | `potential_evaporation` | kg/m\^2 | 0\* | 2.76\* | 13915 meters | Potential evaporation: from NARR | | `total_precipitation` | kg/m\^2 | 0\* | 124.19\* | 13915 meters | Hourly total precipitation | | `shortwave_radiation` | W/m\^2 | 0\* | 1368.54\* | 13915 meters | Surface downward shortwave radiation - bias corrected | \* estimated min or max value ### Image Properties **Image Properties** | Name | Type | Description | |---|---|---| | end_hour | DOUBLE | End hour | | start_hour | DOUBLE | Start hour | ### Terms of Use **Terms of Use** Distribution of data from the Goddard Earth Sciences Data and Information Services Center (GES DISC) is funded by NASA's Science Mission Directorate (SMD). Consistent with NASA [Earth Science Data and Information Policy](https://www.earthdata.nasa.gov/engage/open-data-services-and-software/data-and-information-policy/), data from the GES DISC archive are available free to the user community. For more information visit the GES DISC [Data Policy](https://disc.sci.gsfc.nasa.gov/citing) page. ### Citations Citations: - The data set source should be properly cited when the data are used. A formal reference of the form: \\, 2012, last updated 2013: \\. NASA/GSFC, Greenbelt, MD, USA, NASA Goddard Earth Sciences Data and Information Services Center (GES DISC). Accessed \\ at \\ is suggested following Parsons et al. (2010), [doi:10.1029/2010EO340001](https://doi.org/10.1029/2010EO340001). ### Explore with Earth Engine > [!NOTE] > **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) ### Code Editor (JavaScript) ```javascript var dataset = ee.ImageCollection('NASA/NLDAS/FORA0125_H002') .filter(ee.Filter.date('2018-07-01', '2018-07-30')); var temperature = dataset.select('temperature'); var temperatureVis = { min: -5.0, max: 40.0, palette: ['3d2bd8', '4e86da', '62c7d8', '91ed90', 'e4f178', 'ed6a4c'], }; Map.setCenter(-110.21, 35.1, 4); Map.addLayer(temperature, temperatureVis, 'Temperature'); ``` [Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/NASA/NASA_NLDAS_FORA0125_H002) [NLDAS-2: North American Land Data Assimilation System Forcing Fields](https://developers.google.com/earth-engine/datasets/catalog/NASA_NLDAS_FORA0125_H002.md.txt) Land Data Assimilation System (LDAS) combines multiple sources of observations (such as precipitation gauge data, satellite data, and radar precipitation measurements) to produce estimates of climatological properties at or near the Earth''s surface. This dataset is the primary (default) forcing file (File A) for Phase 2 of the North American ... NASA/NLDAS/FORA0125_H002, climate,evaporation,forcing,geophysical,hourly,humidity,ldas,nasa,precipitation,pressure,radiation,soil,temperature,water-vapor,weather-and-climate,wind 1979-01-01T13:00:00Z/2026-11-08T12:00:00Z 24.85 -125.15 53.28 -66.85 Google Earth Engine https://developers.google.com/earth-engine/datasets - [](https://doi.org/https://doi.org/10.5067/6J5LHHOHZHN4) - [](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/NASA_NLDAS_FORA0125_H002)