The Gridded Surface Meteorological dataset provides
high spatial resolution (~4-km) daily surface fields of temperature,
precipitation, winds, humidity and radiation across the contiguous
United States from 1979. The dataset blends the high resolution
spatial data from PRISM with the high temporal resolution data
from the National Land Data Assimilation System (NLDAS) to produce
spatially and temporally continuous fields that lend themselves
to additional land surface modeling.
This dataset contains provisional products that are replaced with
updated versions when the complete source data become available.
Products can be distinguished by the value of the 'status' property.
At first, assets are ingested with status='early'. After several
days, they are replaced by assets with status='provisional'.
After about 2 months, they are replaced by the final assets with
status='permanent'.
Bands
Pixel Size 4638.3 meters
Bands
Name
Units
Min
Max
Pixel Size
Description
pr
mm, daily total
0*
690.44*
meters
Precipitation amount
rmax
%
1.05*
100*
meters
Maximum relative humidity
rmin
%
0*
100*
meters
Minimum relative humidity
sph
Mass fraction
0*
0.02*
meters
Specific humididy
srad
W/m^2
0*
455.61*
meters
Surface downward shortwave radiation
th
deg
meters
Wind direction
tmmn
K
225.54*
314.88*
meters
Minimum temperature
tmmx
K
233.08*
327.14*
meters
Maximum temperature
vs
m/s
0.14*
29.13*
meters
Wind velocity at 10m
erc
NFDRS fire danger index
0*
131.85*
meters
Energy release component
eto
mm
0*
17.27*
meters
Daily grass reference evapotranspiration
bi
NFDRS fire danger index
0*
214.2*
meters
Burning index
fm100
%
0.28*
33.2*
meters
100-hour dead fuel moisture
fm1000
%
0.36*
47.52*
meters
1000-hour dead fuel moisture
etr
mm
0*
27.02*
meters
Daily alfalfa reference evapotranspiration
vpd
kPa
0*
9.83*
meters
Mean vapor pressure deficit
* estimated min or max value
Image Properties
Image Properties
Name
Type
Description
status
STRING
'early', 'provisional', or 'permanent'
Terms of Use
Terms of Use
This work (METDATA, by John Abatzoglou) is in the public
domain and is free of known copyright restrictions. Users should
properly cite the source used in the creation of any reports and
publications resulting from the use of this dataset and note the
date when the data was acquired.
Citations
Citations:
Abatzoglou J. T., Development of gridded surface meteorological
data for ecological applications and modelling, International Journal
of Climatology. (2012) doi:10.1002/joc.3413
The Gridded Surface Meteorological dataset provides high spatial resolution (~4-km) daily surface fields of temperature, precipitation, winds, humidity and radiation across the contiguous United States from 1979. The dataset blends the high resolution spatial data from PRISM with the high temporal resolution data from the National Land Data Assimilation System …
[null,null,[],[[["\u003cp\u003eThe Gridded Surface Meteorological (GRIDMET) dataset provides daily surface data for climate variables such as temperature, precipitation, wind, humidity, and radiation across the contiguous US from 1979 to near present.\u003c/p\u003e\n"],["\u003cp\u003eGRIDMET data is at a 4-km resolution and blends high-resolution spatial data from PRISM with high temporal resolution data from NLDAS.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset includes provisional products that are updated to permanent status after approximately 2 months and users should note the 'status' property.\u003c/p\u003e\n"],["\u003cp\u003eData is freely available for research, education, and nonprofit use; appropriate citation is requested when using this public domain dataset.\u003c/p\u003e\n"]]],[],null,["Dataset Availability\n: 1979-01-01T00:00:00Z--2025-08-29T06:00:00Z\n\nDataset Provider\n:\n\n\n [University of California Merced](http://www.climatologylab.org/gridmet.html)\n\nCadence\n: 1 Day\n\nTags\n:\n [climate](/earth-engine/datasets/tags/climate) [gridmet](/earth-engine/datasets/tags/gridmet) [humidity](/earth-engine/datasets/tags/humidity) [merced](/earth-engine/datasets/tags/merced) [metdata](/earth-engine/datasets/tags/metdata) [precipitation](/earth-engine/datasets/tags/precipitation) [radiation](/earth-engine/datasets/tags/radiation) [temperature](/earth-engine/datasets/tags/temperature) [water-vapor](/earth-engine/datasets/tags/water-vapor) [wind](/earth-engine/datasets/tags/wind) \n fireburning \nnfdrs \n\nDescription \nThe Gridded Surface Meteorological dataset provides\nhigh spatial resolution (\\~4-km) daily surface fields of temperature,\nprecipitation, winds, humidity and radiation across the contiguous\nUnited States from 1979. The dataset blends the high resolution\nspatial data from PRISM with the high temporal resolution data\nfrom the National Land Data Assimilation System (NLDAS) to produce\nspatially and temporally continuous fields that lend themselves\nto additional land surface modeling.\n\nThis dataset contains provisional products that are replaced with\nupdated versions when the complete source data become available.\nProducts can be distinguished by the value of the 'status' property.\nAt first, assets are ingested with status='early'. After several\ndays, they are replaced by assets with status='provisional'.\nAfter about 2 months, they are replaced by the final assets with\nstatus='permanent'.\n\nBands\n\n\n**Pixel Size**\n\n4638.3 meters\n\n**Bands**\n\n| Name | Units | Min | Max | Pixel Size | Description |\n|----------|-------------------------|----------|----------|------------|--------------------------------------------|\n| `pr` | mm, daily total | 0\\* | 690.44\\* | meters | Precipitation amount |\n| `rmax` | % | 1.05\\* | 100\\* | meters | Maximum relative humidity |\n| `rmin` | % | 0\\* | 100\\* | meters | Minimum relative humidity |\n| `sph` | Mass fraction | 0\\* | 0.02\\* | meters | Specific humididy |\n| `srad` | W/m\\^2 | 0\\* | 455.61\\* | meters | Surface downward shortwave radiation |\n| `th` | deg | | | meters | Wind direction |\n| `tmmn` | K | 225.54\\* | 314.88\\* | meters | Minimum temperature |\n| `tmmx` | K | 233.08\\* | 327.14\\* | meters | Maximum temperature |\n| `vs` | m/s | 0.14\\* | 29.13\\* | meters | Wind velocity at 10m |\n| `erc` | NFDRS fire danger index | 0\\* | 131.85\\* | meters | Energy release component |\n| `eto` | mm | 0\\* | 17.27\\* | meters | Daily grass reference evapotranspiration |\n| `bi` | NFDRS fire danger index | 0\\* | 214.2\\* | meters | Burning index |\n| `fm100` | % | 0.28\\* | 33.2\\* | meters | 100-hour dead fuel moisture |\n| `fm1000` | % | 0.36\\* | 47.52\\* | meters | 1000-hour dead fuel moisture |\n| `etr` | mm | 0\\* | 27.02\\* | meters | Daily alfalfa reference evapotranspiration |\n| `vpd` | kPa | 0\\* | 9.83\\* | meters | Mean vapor pressure deficit |\n\n\\* estimated min or max value\n\nImage Properties\n\n**Image Properties**\n\n| Name | Type | Description |\n|--------|--------|----------------------------------------|\n| status | STRING | 'early', 'provisional', or 'permanent' |\n\nTerms of Use\n\n**Terms of Use**\n\nThis work (METDATA, by John Abatzoglou) is in the public\ndomain and is free of known copyright restrictions. Users should\nproperly cite the source used in the creation of any reports and\npublications resulting from the use of this dataset and note the\ndate when the data was acquired.\n\nCitations \nCitations:\n\n- Abatzoglou J. T., Development of gridded surface meteorological\n data for ecological applications and modelling, International Journal\n of Climatology. (2012) [doi:10.1002/joc.3413](https://doi.org/10.1002/joc.3413)\n\nExplore with Earth Engine **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)\n\nCode Editor (JavaScript) \n\n```javascript\nvar dataset = ee.ImageCollection('IDAHO_EPSCOR/GRIDMET')\n .filter(ee.Filter.date('2018-08-01', '2018-08-15'));\nvar maximumTemperature = dataset.select('tmmx');\nvar maximumTemperatureVis = {\n min: 290.0,\n max: 314.0,\n palette: ['d8d8d8', '4addff', '5affa3', 'f2ff89', 'ff725c'],\n};\nMap.setCenter(-115.356, 38.686, 5);\nMap.addLayer(maximumTemperature, maximumTemperatureVis, 'Maximum Temperature');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/IDAHO_EPSCOR/IDAHO_EPSCOR_GRIDMET) \n[GRIDMET: University of Idaho Gridded Surface Meteorological Dataset](/earth-engine/datasets/catalog/IDAHO_EPSCOR_GRIDMET) \nThe Gridded Surface Meteorological dataset provides high spatial resolution (\\~4-km) daily surface fields of temperature, precipitation, winds, humidity and radiation across the contiguous United States from 1979. The dataset blends the high resolution spatial data from PRISM with the high temporal resolution data from the National Land Data Assimilation System ... \nIDAHO_EPSCOR/GRIDMET, climate,gridmet,humidity,merced,metdata,precipitation,radiation,temperature,water-vapor,wind \n1979-01-01T00:00:00Z/2025-08-29T06:00:00Z \n24.9 -124.9 49.6 -66.8 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [](https://doi.org/http://www.climatologylab.org/gridmet.html)\n- [](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/IDAHO_EPSCOR_GRIDMET)"]]
