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    • Change in First Leaf and Bloom Dates Between 1951–1960 and 2014–2023

    Metadata Updated: February 25, 2025

    This indicator shows modeled trends in lilac and honeysuckle first leaf dates at weather stations across the contiguous 48 states. This map compares the average first leaf date during two 10-year periods, developed using data from the USA National Phenology Network. Blue circles represent later leaf dates, and red circles represent earlier. For more information: https://www.epa.gov/climate-indicators

    Access & Use Information

    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 Date June 14, 2024
    Metadata Created Date February 25, 2025
    Metadata Updated Date February 25, 2025
    Reference Date(s) August 2, 2016 (publication)
    Frequency Of Update annually

    Metadata Source

    Harvested from Environmental Dataset Gateway ISO Geospatial Metadata

    Other Data Resources

    Graphic Preview

    Change in leaf bloom dates

    Additional Metadata

    Resource Type Dataset
    Metadata Date June 14, 2024
    Metadata Created Date February 25, 2025
    Metadata Updated Date February 25, 2025
    Reference Date(s) August 2, 2016 (publication)
    Responsible Party U.S. Environmental Protection Agency, Office of Air and Radiation (Publisher)
    Contact Email
    Guid 7E337966-74D0-4EF3-99DD-B7FB46EBFD2
    Access Constraints https://edg.epa.gov/EPA_Data_License.html
    Bbox East Long -67.4
    Bbox North Lat 49
    Bbox South Lat 25.92
    Bbox West Long -124.4
    Coupled Resource
    Frequency Of Update annually
    Graphic Preview Description Change in leaf bloom dates
    Graphic Preview File https://edg.epa.gov/data/PUBLIC/OAR/OAP/metadata/Thumbnails/LeafBloom.png
    Graphic Preview Type PNG
    Harvest Object Id e3cecd91-55fb-4a51-a0df-ee0fbc5a81c9
    Harvest Source Id 9b3cd81e-5515-4bb7-ad3c-5ae44de9b4bd
    Harvest Source Title Environmental Dataset Gateway ISO Geospatial Metadata
    Licence None. Please check sources, scale, accuracy, currency and other available information. Please confirm that you are using the most recent copy of both data and metadata. Acknowledgement of the EPA would be appreciated.
    Lineage
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-124.4, 25.92], [-67.4, 25.92], [-67.4, 49.0], [-124.4, 49.0], [-124.4, 25.92]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System 102010
    Spatial Harvester True
    Temporal Extent Begin 1951-01-01
    Temporal Extent End 2015-01-01

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