GRIDMET: University of Idaho Gridded Surface Meteorological Dataset (IDAHO_EPSCOR/GRIDMET)

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

NameDescriptionGee Unit
prPrecipitation amountmm, daily total
rmaxMaximum relative humidity%
rminMinimum relative humidity%
sphSpecific humididykg/kg
sradSurface downward shortwave radiationW/m^2
thWind directionDegrees clockwise from North
tmmnMinimum temperatureK
tmmxMaximum temperatureK
vsWind velocity at 10mm/s
ercEnergy release componentNFDRS fire danger index
etoDaily reference evapotranspirationgrass, mm
biBurning indexNFDRS fire danger index
fm100100-hour dead fuel moisture%
fm10001000-hour dead fuel moisture%
etrDaily reference evapotranspirationAlfalfa, mm
vpdMean vapor pressure deficitkPa


University of Idaho (producer, licensor)
Google Earth Engine (host)
STAC Version 0.6.0
Keywords climate, fireburning, gridmet, humidity, idaho, metdata, nfdrs, precipitation, radiation, temperature, uofi, wind
License proprietary
Temporal Extent 12/31/1978, 4:00:00 PM - now
Citation Abatzoglou J. T., Development of gridded surface meteorological data for ecological applications and modelling, International Journal of Climatology. (2012) doi: [](
Type image_collection
GSD arc minutesm
Cadence day
Asset schema {"name":"status","description":"'early', 'provisional', or 'permanent'","type":"STRING"}