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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
Version4.4
Project
Published2022-11-01
Updated2022-11-01
Usage138 downloads

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 TEMPERATURE
  • SURFACE TEMPERATURE
  • MAXIMUM/MINIMUM TEMPERATURE
  • ATMOSPHERE
  • ATMOSPHERIC RADIATION
  • SHORTWAVE RADIATION
  • TERRESTRIAL HYDROSPHERE
  • SNOW/ICE
  • SNOW WATER EQUIVALENT
  • ATMOSPHERE
  • PRECIPITATION
  • PRECIPITATION AMOUNT
  • ATMOSPHERE
  • ATMOSPHERIC WATER VAPOR
  • WATER VAPOR INDICATORS
  • VAPOR PRESSURE

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

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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
4.4Daymet: Monthly Climate Summaries on a 1-km Grid for North America, Version 4 R12022-11-01