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Daymet News

Daymet now available in the Fixed Sites Tool

Fixed Sites Subsets Tool for North America Now Includes Daymet Data

A site within the National Ecological Observatory Network demonstrates that Daymet data can now be accessed using the Fixed Sites Subsets Tool.

For study sites in North America, Daymet daily weather data is now provided alongside pre-processed MODIS and VIIRS data subsets.

Daymet Goodness-of-Fit Statistics for 2017

Daymet station-level cross-validation statistics for year 2016

Station-level cross validation of Daymet at weather station locations showing annual mean absolute error (MAE; degrees C) for the variable maximum temperature (tmax) in 2016.

Daymet provides information to access the accuracy and uncertainty of modeled climate data at each ground station location or two-degree tile.

Daymet Climatologies Updated

Daymet V3 average annual minimum temperature for 1980 and 2015

Daymet V3 average annual minimum temperature for 1980 and 2015 for a subset of the Daymet domain in Alaska and western Canada.

Daymet V3 annual and monthly climatologies for minimum and maximum temperature, precipitation, and vapor pressure have been updated to include year 2017.

Calculate Climate Anomalies from Daymet

Climate normal and anomaly calculated from Daymet

Climate anomaly (right panel) in minimum daily temperature for year 1990 compared to the long-term normal (left panel). The climate normal and anomaly were calculated for a single 2-degree tile from the Daymet dataset.

New Jupyter notebook tutorials show how to access and visualize Daymet climate data from within Python and how to calculate climate normals and anomalies.

Daymet Data for Year 2016 Now Available

Daymet data is archived and distributed by the ORNL DAAC

Daymet data is archived and distributed by the ORNL DAAC

Daymet takes in daily meteorological observations to produce high-resolution, gridded estimates of daily weather parameters across North America.

Daymet V3 Annual and Monthly Climatology

Daymet V3 average annual minimum temperature for 1980 and 2015 for a subset of the Daymet domain in Alaska and western Canada.

Daymet V3 average annual minimum temperature for 1980 and 2015 for a subset of the Daymet domain in Alaska and western Canada.

Annual and monthly climatologies for 1980-2015 for minimum and maximum temperature, precipitation, and vapor pressure are now available for Daymet V3.

Daymet Version 3 Data Now Available

Daymet V3.0 2012 Average Daily Maximum Temperature for North America, Hawaii, and Puerto Rico

Daymet V3.0 2012 Average Daily Maximum Temperature for North America, Hawaii, and Puerto Rico

The new version of Daymet data includes an expanded North American spatial extent including Canada, the United States (including Alaska), Mexico, Puerto Rico, and Hawaii.

Quantifying uncertainty in Daymet, 1980-2015

Daymet cross-validation showing the number of station-days evaluated, "nstndays", per 2-degree by 2-degree Daymet tile for 1980 precipitation.

Daymet cross-validation showing the number of station-days evaluated, "nstndays", per 2-degree by 2-degree Daymet tile for 1980 precipitation.

The Daymet data set has been updated to provide estimates of uncertainty in the daily temperature and precipitation values for North America.

2015 Daymet data now available

Average daily maximum temperature in 2015 from Daymet.

Average daily maximum temperature in 2015 from Daymet.

Daymet is a gridded data set of estimates of daily weather parameters for North America.

Quantifying uncertainty in Daymet

Daymet cross-validation tile-wide summary statistics for maximum temperature in 1980; "daymae" = mean absolute error for single day predictions.

Daymet cross-validation tile-wide summary statistics for maximum temperature in 1980; "daymae" = mean absolute error for single day predictions.

A new data set provides estimates of uncertainty in the daily temperature and precipitation values for North America provided by Daymet.