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    • SPLASH Field Study; Atmospheric Surface Flux Station #50 measurements (level 2 Processed), Oct2021-Jun2023 (NCEI Accession 0303960)

    Metadata Updated: December 1, 2025

    Processed (Level 2) measurements and derived variables from the Atmospheric Surface Flux Station #50 (ASFS-50) deployed at the Avery Picnic site (38°58.3455' N, 106°59.8113' W) during the Study of Precipitation, the Lower Atmosphere, and Surface for Hydrometeorology (SPLASH) campaign near Gothic, Colorado, from October 2021 through June 2023. The ASFS measured variables of the surface energy budget, momentum flux, near-surface meteorology, and soil properties. Measurements of high-resolution 3-dimensional winds were observed at a nominal height of 4.6 m (depending on snow depth). Measurements of upwelling broadband radiation and meteorology observed from a nominal height of 2.9 m. The measurements are included in three netCDF files per day. The "sledmet" files are comprised of 1-min averages of measured and derived variables, including near-surface meteorology, surface skin temperature, snow depth, radiative fluxes, and conductive fluxes. The "sledseb" files are 10-min averages of the same variables as in the 1-min files and also include calculations of turbulent sensible and latent heat fluxes, momentum flux, and associated diagnostics, surface stress, and Monin-Obukhov parameters using both eddy covariance and bulk methodologies, all valid for the 10-min intervals. Both of these file types also contain a "_qc" variable paired with each measurement variable, or family of variables, that is a temporally-matched quality control code: 0 = good data, 1 = caution (data may be suspect), 2 = bad data, and -1 = missing (no data was collected). The "10hz" files include 3-dimensional winds and gas densities of water vapor and carbon dioxide that are quality-controlled, aggregated to a regular 10-Hz temporal grid, and (for winds) rotated into the earth coordinate frame. A detailed documentation of the measurement conditions, the processing steps taken to construct this data set, and other caveats and uncertainties will be provided in an accompanying published data manuscript.

    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.

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    Dates

    Metadata Date 2025-11-19T13:05:53Z
    Metadata Created Date June 1, 2025
    Metadata Updated Date December 1, 2025
    Reference Date(s) May 6, 2025 (publication)
    Frequency Of Update asNeeded

    Metadata Source

    Harvested from NOAA/NESDIS/ncei/accessions

    Other Data Resources

    Graphic Preview

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    Additional Metadata

    Resource Type Dataset
    Metadata Date 2025-11-19T13:05:53Z
    Metadata Created Date June 1, 2025
    Metadata Updated Date December 1, 2025
    Reference Date(s) May 6, 2025 (publication)
    Responsible Party (Point of Contact)
    Contact Email
    Guid gov.noaa.nodc:0303960
    Access Constraints Cite as: Ballard, Brad; Cox, Christopher; Gallagher, Michael; Intrieri, Janet; Butterworth, Brian; Meyers, Tilden; Persson, Ola (2025). SPLASH Field Study; Atmospheric Surface Flux Station #50 measurements (level 2 Processed), Oct2021-Jun2023 (NCEI Accession 0303960). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/j9hx-mt86. Accessed [date]., Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
    Bbox East Long -106.598113
    Bbox North Lat 38.583455
    Bbox South Lat 38.583455
    Bbox West Long -106.598113
    Coupled Resource
    Frequency Of Update asNeeded
    Graphic Preview Description Preview graphic
    Graphic Preview File https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0303960
    Graphic Preview Type PNG
    Harvest Object Id f53b8bc1-e435-4562-ab1c-4c5dc90b8215
    Harvest Source Id c084a438-6f6b-470d-93e0-16aeddb9f513
    Harvest Source Title NOAA/NESDIS/ncei/accessions
    Licence accessLevel: Public
    Lineage
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Point", "coordinates": [-106.598113, 38.583455]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2021-10-12
    Temporal Extent End 2023-06-21

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