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Daymet: Monthly Climate Summaries on a 1-km Grid for North America, Version 4 R1

Overview

DOIhttps://doi.org/10.3334/ORNLDAAC/2131
Version4.5
Project
Published2022-11-01
Updated2023-03-05
Usage2733 downloads
Citations2 publications cited this dataset

Description

This dataset provides Daymet Version 4 R1 monthly climate summaries derived from Daymet Version 4 R1 daily data at a 1 km x 1 km spatial resolution for five Daymet variables: minimum and maximum temperature, precipitation, vapor pressure, and snow water equivalent. Monthly averages are provided for minimum and maximum temperature, vapor pressure, and snow water equivalent, and monthly totals are provided for the precipitation variable. Each data file is yearly by variable with 12 monthly time steps and covers the same period of record as the Daymet V4 R1 daily data. The monthly climatology files are derived from the larger datasets of daily weather parameters produced on a 1 km x 1 km grid for North America, Hawaii, and Puerto Rico. Separate monthly files are provided for the land areas of continental North America (Canada, the United States, and Mexico), Hawaii, and Puerto Rico. Data are distributed in standardized Climate and Forecast (CF)-compliant netCDF (*.nc) and Cloud-Optimized GeoTIFF (*.tif) formats. In Version 4 R1 (ver 4.4), all 2020 and 2021 files (60 total) 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 WATER VAPOR
  • WATER VAPOR INDICATORS
  • VAPOR PRESSURE
  • ATMOSPHERE
  • PRECIPITATION
  • PRECIPITATION AMOUNT
  • TERRESTRIAL HYDROSPHERE
  • SNOW/ICE
  • SNOW WATER EQUIVALENT
  • ATMOSPHERE
  • ATMOSPHERIC RADIATION
  • SHORTWAVE RADIATION
  • ATMOSPHERE
  • ATMOSPHERIC TEMPERATURE
  • SURFACE TEMPERATURE
  • MAXIMUM/MINIMUM TEMPERATURE

Data Use and Citation

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Crosscite Citation Formatter
Thornton, M.M., R. Shrestha, Y. Wei, P.E. Thornton, S-C. Kao, and B.E. Wilson. 2022. Daymet: Monthly Climate Summaries on a 1-km Grid for North America, Version 4 R1. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/2131

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_Monthly_V4R1.pdf

Visualize and Subset Data

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: Monthly Climate Summaries on a 1-km Grid for North America, Version 2 2016-03-17
3.4Daymet: Monthly Climate Summaries on a 1-km Grid for North America, Version 32017-04-19
4.3Daymet: Monthly Climate Summaries on a 1-km Grid for North America, Version 42020-12-15
4.5Daymet: Monthly Climate Summaries on a 1-km Grid for North America, Version 4 R12022-11-01