- Dataset Availability
- 1979-01-01T13:00:00Z–2024-10-31T19:00:00Z
- Dataset Provider
- NASA GES DISC at NASA Goddard Space Flight Center
- Earth Engine Snippet
-
ee.ImageCollection("NASA/NLDAS/FORA0125_H002")
- Tags
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:
Bands
Resolution
13915 meters
Bands
Name | Units | Min | Max | Description |
---|---|---|---|---|
temperature |
°C | -49.79* | 51.2* | Air temperature at 2 meters above the surface |
specific_humidity |
Mass fraction | 0* | 0.02* | Specific humidity at 2 meters above the surface |
pressure |
Pa | 61847.6* | 105338* | Surface pressure |
wind_u |
m/s | -27.93* | 27.54* | U wind component at 10 meters above the surface |
wind_v |
m/s | -27.45* | 35.13* | V wind component at 10 meters above the surface |
longwave_radiation |
W/m^2 | 72.18* | 545.11* | Surface downward longwave radiation |
convective_fraction |
0* | 1* | Fraction of total precipitation that is convective: from NARR |
|
potential_energy |
J/kg | 0* | 76666.2* | Convective available potential energy (J/kg): from NARR |
potential_evaporation |
kg/m^2 | 0* | 2.76* | Potential evaporation: from NARR |
total_precipitation |
kg/m^2 | 0* | 124.19* | Hourly total precipitation |
shortwave_radiation |
W/m^2 | 0* | 1368.54* | Surface downward shortwave radiation - bias corrected |
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, data from the GES DISC archive are available free to the user community. For more information visit the GES DISC Data Policy page.
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.
Explore with Earth Engine
Code Editor (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');