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

    Metadata Updated: June 25, 2024

    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 4.1), 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.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Created Date May 30, 2023
    Metadata Updated Date June 25, 2024

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    Monthly average of daily maximum temperature, 2019, derived from Daymet version 4 daily data. Months shown (left to right) are winter (January), spring (April), and summer (August).

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date May 30, 2023
    Metadata Updated Date June 25, 2024
    Publisher ORNL_DAAC
    Maintainer
    Identifier C2532007210-ORNL_CLOUD
    Data First Published 2024-06-14
    Language en-US
    Data Last Modified 2024-06-17
    Category Daymet, geospatial
    Public Access Level public
    Bureau Code 026:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://data.nasa.gov/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Citation Thornton, M.M., R. Shrestha, Y. Wei, P.E. Thornton, and S-C. Kao. 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
    Graphic Preview Description Monthly average of daily maximum temperature, 2019, derived from Daymet version 4 daily data. Months shown (left to right) are winter (January), spring (April), and summer (August).
    Graphic Preview File https://daac.ornl.gov/DAYMET/guides/Daymet_Monthly_V4R1_Fig1.png
    Harvest Object Id 3e83ff59-587a-4e71-869c-672918e9d42d
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.3334/ORNLDAAC/2131
    Metadata Type geospatial
    Old Spatial -178.13 14.07 -53.06 82.91
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash 0d248431ba2dd6057e7472dd3ceb36a3126a94ae7dd18b74b9d6e1d534e463ee
    Source Schema Version 1.1
    Spatial
    Temporal 1950-01-01T00:00:00Z/2023-12-31T23:59:59Z

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