Daymet V3: Daily Surface Weather and Climatological Summaries [deprecated]

  • The Daymet V3 dataset provides gridded estimates of daily weather parameters for specific regions including the United States, Mexico, Canada, Hawaii, and Puerto Rico from 1980 to 2019.

  • This dataset has been superseded by the NASA/ORNL/DAYMET_V4 version.

  • It includes daily data for parameters such as daylight duration, precipitation, radiation, snow water equivalent, temperature (max and min), and vapor pressure at a pixel size of 1000 meters.

  • The data is in the public domain and available without restrictions on use and distribution.
NASA/ORNL/DAYMET_V3
Dataset Availability
1980-01-01T00:00:00Z–2019-12-31T00:00:00Z
Dataset Provider
Earth Engine Snippet
ee.ImageCollection("NASA/ORNL/DAYMET_V3")
Cadence
1 Day
Tags
climate
daily
daylight
daymet
flux
geophysical
nasa
ornl
precipitation
radiation
snow
temperature
vapor
water
weather

Description

Daymet V3 provides gridded estimates of daily weather parameters for United States, Mexico, Canada, Hawaii, and Puerto Rico. It is derived from selected meteorological station data and various supporting data sources.

Compared to the previous version, Daymet V3 uses an entirely new suite of inputs including:

  • NASA SRTM DEM version 2.1.

  • Land/Water Mask: MODIS 250 MOD44W_v2.NASA_ORNL_

  • Horizon files derived from the SRTM DEM.

  • Ground station weather inputs from several sources with QA/QC.

Documentation:

Bands

Pixel Size
1000 meters

Bands

Name Units Min Max Pixel Size Description
dayl seconds 0* 86400* meters

Duration of the daylight period. Based on the period of the day during which the sun is above a hypothetical flat horizon.
prcp mm 0* 200* meters

Daily total precipitation, sum of all forms converted to water-equivalent.
srad W/m^2 0* 800* meters

Incident shortwave radiation flux density, taken as an average over the daylight period of the day.
swe kg/m^2 0* 1000* meters

Snow water equivalent, the amount of water contained within the snowpack.
tmax °C -50* 50* meters

Daily maximum 2-meter air temperature.
tmin °C -50* 50* meters

Daily minimum 2-meter air temperature.
vp Pa 0* 10000* meters

Daily average partial pressure of water vapor.
* estimated min or max value

Terms of Use

Terms of Use

This dataset is in the public domain and is available without restriction on use and distribution. See NASA's Earth Science Data & Information Policy for additional information.

Citations

Citations:

  • Thornton, P.E., M.M. Thornton, B.W. Mayer, Y. Wei, R. Devarakonda, R.S.Vose, and R.B. Cook. {YEAR}. Daymet: Daily Surface Weather Data on a 1-km Grid for North America, Version3. ORNL DAAC, Oak Ridge, Tennessee, USA

  • Other Citation Details - Thornton, P.E., M.M. Thornton, B.W. Mayer, Y. Wei, R. Devarakonda, R.S. Vose, and R.B. Cook. 2016. Daymet: Daily Surface Weather Data on a 1-km Grid for North America, Version 3. ORNL DAAC, Oak Ridge, Tennessee, USA. doi:10.3334/ORNLDAAC/1328

DOIs

Explore with Earth Engine

Code Editor (JavaScript)

var dataset = ee.ImageCollection('NASA/ORNL/DAYMET_V3')
                  .filter(ee.Filter.date('2017-04-01', '2017-04-30'));
var maximumTemperature = dataset.select('tmax');
var maximumTemperatureVis = {
  min: -40.0,
  max: 30.0,
  palette: ['1621A2', 'white', 'cyan', 'green', 'yellow', 'orange', 'red'],
};
Map.setCenter(-110.21, 35.1, 4);
Map.addLayer(maximumTemperature, maximumTemperatureVis, 'Maximum Temperature');
Open in Code Editor
Daymet V3 provides gridded estimates of daily weather parameters for United States, Mexico, Canada, Hawaii, and Puerto Rico. It is derived from selected meteorological station data and various supporting data sources. Compared to the previous version, Daymet V3 uses an entirely new suite of inputs including: NASA SRTM DEM version …
NASA/ORNL/DAYMET_V3, climate,daily,daylight,flux,geophysical,nasa,ornl,precipitation,radiation,snow,temperature,vapor,water,weather
1980-01-01T00:00:00Z/2019-12-31T00:00:00Z
1.6 -150.8 84 -1.1
Google Earth Engine