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Daymet: Daily Surface Weather Data on a 1-km Grid for North America, Version 4 R1

Overview

DOIhttps://doi.org/10.3334/ORNLDAAC/2129
Version4.1
Project
Published2022-11-01
Usage24406 downloads
Citations48 publications cited this dataset

Description

This dataset provides Daymet Version 4 R1 data as gridded estimates of daily weather parameters for North America, Hawaii, and Puerto Rico. Daymet variables include the following parameters: minimum temperature, maximum temperature, precipitation, shortwave radiation, vapor pressure, snow water equivalent, and day length. The dataset covers the period from January 1, 1980, to December 31 (or December 30 in leap years) of the most recent full calendar year for the Continental North America and Hawaii spatial regions. Data for Puerto Rico is available starting in 1950. Each subsequent year is processed individually at the close of a calendar year. Daymet variables are provided as individual files, by variable and year, at a 1 km x 1 km spatial resolution and a daily temporal resolution. Areas of Hawaii and Puerto Rico are available as files separate from the continental North America. Data are in a North America Lambert Conformal Conic projection and are distributed in a standardized Climate and Forecast (CF)-compliant netCDF file format. In Version 4 R1, all 2020 and 2021 files were updated to improve predictions especially in high-latitude areas. It was found that input files used for deriving 2020 and 2021 data had, for a significant portion of Canadian weather stations, missing daily variable readings for the month of January. NCEI has corrected issues with the Environment Canada ingest feed which led to the missing readings. The revised 2020 and 2021 Daymet V4 R1 files were derived with new GHCNd inputs. Files outside of 2020 and 2021 have not changed from the previous V4 release.

Science Keywords

  • ATMOSPHERE
  • ATMOSPHERIC TEMPERATURE
  • SURFACE TEMPERATURE
  • MAXIMUM/MINIMUM TEMPERATURE
  • ATMOSPHERE
  • PRECIPITATION
  • SNOW WATER EQUIVALENT
  • ATMOSPHERE
  • PRECIPITATION
  • PRECIPITATION AMOUNT
  • 24 HOUR PRECIPITATION AMOUNT
  • ATMOSPHERE
  • ATMOSPHERIC WATER VAPOR
  • WATER VAPOR INDICATORS
  • VAPOR PRESSURE
  • ATMOSPHERE
  • ATMOSPHERIC RADIATION
  • SHORTWAVE RADIATION

Data Use and Citation

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Crosscite Citation Formatter
Thornton, M.M., R. Shrestha, Y. Wei, P.E. Thornton, and S-C. Kao. 2022. Daymet: Daily Surface Weather Data on a 1-km Grid for North America, Version 4 R1. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/2129

This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use Policy. See our Data Use and Citation Policy for more information.

Data Files

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Companion Files

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Dataset has 1 companion files.

  • Daymet_Daily_V4R1.pdf

Advanced Data Access through THREDDS Data Server

Additional Resources

TypeTitle
TutorialSpatial and Temporal Subsets of Daymet Data Using the THREDDS NetCDF Subset Service (NCSS) for Grids
Codegeoknife package version 1.5.5
WebinarToward Analysis Ready Data - Programmatically Discover, Access, and Subset Daymet V4 Data with Python and ArcGIS
TutorialDaymet Single Pixel Data Extraction - Web Services
CodeDaymetPy: A python library for accessing Daymet surface weather data
CodeFedData - Getting assorted geospatial data into R
CodeDaymet Single Pixel Batch Scripts
CodeHyRiver - A suite of Python packages that includes the PyDaymet API and Notebook examples to assess Aridity, Potential Evapotranspiration, and Climates using Daymet inputs.
CodePyGeoHydro - a python library designed to aid in watershed analysis
Classroom ExerciseGEOG 576 EX3 Shapefile projection and daymet grids
TutorialAccessing data through ORNL DAAC web services
CodeA Programmatic Interface to the Daymet Web Services: DaymetR
TutorialPython Methods to Derive a Seasonal Mean from Daymet Data
WebinarNetCD-what? An Ecologist's Guide to Working with Daymet and other NetCDF-formatted Data

Version History

VersionDataset TitlePublished
2Daymet: Daily Surface Weather Data on a 1-km Grid for North America, Version 22014-05-15
3.4Daymet: Daily Surface Weather Data on a 1-km Grid for North America, Version 32016-07-15
4.2Daymet: Daily Surface Weather Data on a 1-km Grid for North America, Version 42020-12-15
4.1Daymet: Daily Surface Weather Data on a 1-km Grid for North America, Version 4 R12022-11-01