gov.noaa.nodc:0305474 eng utf8 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NOAA Contact Information Information for contacts at NCEI. information custodian 2026-06-08T13:21:47Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) SPLASH Field Study; Spectral Surface Albedo Observations from NOAA GML/GRAD and CIRES at Brush Creek (CBC) (NCEI Accession 0305474) 2025-06-26 publication 2025-06-18 creation International DOI Foundation (IDF) 10.25921/2yzw-qb93 NOAA National Centers for Environmental Information gov.noaa.nodc:0305474 NCEI Archive Management System 0305474 NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information publisher Bradley Ballard NOAA Earth System Research Laboratory (ESRL) bradley.ballard@noaa.gov https://www.esrl.noaa.gov/ HTTPS NOAA Earth System Research Laboratory (ESRL) website Institution web page information resourceProvider NOAA Physical Sciences Laboratory (PSL) https://psl.noaa.gov/ HTTPS NOAA Physical Sciences Laboratory (PSL) website Institution web page information resourceProvider Hagen Telg NOAA Global Monitoring Laboratory (GML) hagen.telg@noaa.gov https://gml.noaa.gov/ HTTPS NOAA Global Monitoring Laboratory (GML) website Institution web page information collaborator Joseph Sedlar NOAA Global Monitoring Laboratory (GML) joseph.sedlar@noaa.gov https://gml.noaa.gov/ HTTPS NOAA Global Monitoring Laboratory (GML) website Institution web page information collaborator Laura Riihimaki NOAA Global Monitoring Laboratory (GML) laura.riihimaki@noaa.gov https://gml.noaa.gov/ HTTPS NOAA Global Monitoring Laboratory (GML) website Institution web page information collaborator Logan Soldo NOAA Global Monitoring Laboratory (GML) logan.soldo@noaa.gov https://gml.noaa.gov/ HTTPS NOAA Global Monitoring Laboratory (GML) website Institution web page information collaborator SCOTT STIERLE NOAA Global Monitoring Laboratory (GML) scott.stierle@noaa.gov https://gml.noaa.gov/ HTTPS NOAA Global Monitoring Laboratory (GML) website Institution web page information collaborator EMIEL HALL NOAA Global Monitoring Laboratory (GML) emiel.hall@noaa.gov https://gml.noaa.gov/ HTTPS NOAA Global Monitoring Laboratory (GML) website Institution web page information collaborator GARY HODGES NOAA Global Monitoring Laboratory (GML) gary.hodges@noaa.gov https://gml.noaa.gov/ HTTPS NOAA Global Monitoring Laboratory (GML) website Institution web page information collaborator KATHLEEN LANTZ NOAA Global Monitoring Laboratory (GML) kathy.o.Lantz@noaa.gov https://gml.noaa.gov/ HTTPS NOAA Global Monitoring Laboratory (GML) website Institution web page information collaborator Brad Ballard NOAA Physical Sciences Laboratory (PSL) bradley.ballard@noaa.gov https://psl.noaa.gov/ HTTPS NOAA Physical Sciences Laboratory (PSL) website Institution web page information collaborator Telg, Hagen NOAA Global Monitoring Laboratory (GML) https://gml.noaa.gov/ HTTPS NOAA Global Monitoring Laboratory (GML) website Institution web page information author Sedlar, Joseph NOAA Global Monitoring Laboratory (GML) https://gml.noaa.gov/ HTTPS NOAA Global Monitoring Laboratory (GML) website Institution web page information author Riihimaki, Laura D. NOAA Global Monitoring Laboratory (GML) https://gml.noaa.gov/ HTTPS NOAA Global Monitoring Laboratory (GML) website Institution web page information author Soldo, Logan NOAA Global Monitoring Laboratory (GML) https://gml.noaa.gov/ HTTPS NOAA Global Monitoring Laboratory (GML) website Institution web page information author Stierle, Scott NOAA Global Monitoring Laboratory (GML) https://gml.noaa.gov/ HTTPS NOAA Global Monitoring Laboratory (GML) website Institution web page information author Hall, Emiel NOAA Global Monitoring Laboratory (GML) https://gml.noaa.gov/ HTTPS NOAA Global Monitoring Laboratory (GML) website Institution web page information author Hodges, Gary NOAA Global Monitoring Laboratory (GML) https://gml.noaa.gov/ HTTPS NOAA Global Monitoring Laboratory (GML) website Institution web page information author Lantz, Kathleen O. NOAA Global Monitoring Laboratory (GML) https://gml.noaa.gov/ HTTPS NOAA Global Monitoring Laboratory (GML) website Institution web page information author Ballard, Brad NOAA Physical Sciences Laboratory (PSL) https://psl.noaa.gov/ HTTPS NOAA Physical Sciences Laboratory (PSL) website Institution web page information author NOAA Physical Sciences Laboratory (PSL) https://psl.noaa.gov/ HTTPS NOAA Physical Sciences Laboratory (PSL) website Institution web page information contributor NOAA Global Monitoring Laboratory (GML) https://gml.noaa.gov/ HTTPS NOAA Global Monitoring Laboratory (GML) website Institution web page information contributor tableDigital Overview The NOAA Global Monitoring Laboratory (GML), Radiation, Aerosols, and Cloud Division (G-RAD), in collaboration with the Cooperative Institute for Research in Environmental Sciences (CIRES) at the University of Colorado Boulder, conducted spectral surface albedo measurements at — Brush Creek (CBC) — as part of the NOAA Study of Precipitation, the Lower Atmosphere, and Surface for Hydrometeorology (SPLASH) campaign. Spectral albedo values were derived from combined upwelling and downwelling hemispheric irradiance measurements in seven narrow spectral bands centered at nominal wavelengths of 415, 500, 670, 870, 940, and 1625 nm. Downwelling irradiance was measured using an upward-facing Multifilter Rotating Shadowband Radiometer (MFRSR). Upwelling irradiance was measured using a downward-facing Multifilter Radiometer (MFR) mounted approximately 2 meters above ground level. Measurements were recorded at a 20-second interval. Due to the sequential nature of MFRSR observations — which reconstruct downwelling irradiance from irradiances during various shadowband positions — each timestamp represents neither a purely instantaneous nor a time-averaged measurement. The full measurement cycle is completed within eight seconds prior to each reported timestamp. Calibration Approach Instrument responsivity calibrations were performed using: Laboratory lamp calibrations for the MFRSR (downwelling) In-field side-by-side calibration for the MFR (upwelling) Relative calibration between the MFR and MFRSR reduced propagated uncertainty in the albedo product. Surface albedo was computed as the simple ratio of the calibrated upwelling to downwelling irradiance at each wavelength. Note: The NOAA/GML/GRAD calibration facility does not currently support absolute responsivity calibration at 1625 nm. Consequently, irradiance values at this wavelength carry an unknown scaling factor. However, a side-by-side calibration was performed, enabling valid and consistent albedo retrievals at 1625 nm. Data Quality Considerations (notes on both locations) During winter, both instruments were occasionally buried in snow when snow depths exceeded their 2-meter installation height. These periods — more frequent at CKP (Kettle Ponds) than CBC — were not removed from the dataset and may be associated with degraded data quality. Users should exercise caution when analyzing data from winter periods, particularly at CKP, due to potential signal degradation caused by snow coverage over the instruments. Data Availability Spectral surface albedo data are available for the following date ranges: CBC: 2021-10-17 through 2023-06-23 File Naming Convention Files are named as follows: <site>.<product>.<yyyymmdd>.nc Example: cbc.spectral_surface_albedo.20230623.nc cbc – Site identifier spectral_surface_albedo – Data product descriptor 20230623 – Data collection date (YYYYMMDD) File Format All files are in NetCDF format and conform to the CF-1.8 standard. Each file includes the following key variables: surface_albedo — Spectral surface albedo derived from the ratio of upwelling and downwelling irradiance. Unit: 1. downwelling_hemispheric_irradiance — Global downwelling irradiance from MFRSR. Unit: W m-2 nm-1. upwelling_hemispheric_irradiance — Upwelling irradiance from MFR. Unit: W m-2 nm-1. downwelling_hemispheric_irradiance_1625nm — Relative downwelling irradiance at 1625 nm. Unit: 1. upwelling_hemispheric_irradiance_1625nm — Relative upwelling irradiance at 1625 nm. Unit: 1. solar_zenith_angle — Solar zenith angle in degrees. solar_azimuth_angle — Solar azimuth angle in degrees. channel_wavelength_mfr — MFR channel central wavelengths in nanometers. channel_wavelength_mfrsr — MFRSR channel central wavelengths in nanometers.</yyyymmdd></product></site> From fall 2021 through summer 2023, NOAA and research partners participated in the Study of Precipitation, the Lower Atmosphere and Surface for Hydrometeorology (SPLASH). This field study installed a comprehensive, state-of-the-art observing network in the East River watershed of the Colorado mountains with a goal of advancing weather and water prediction capabilities in areas with complex terrain. Benefits: In combination with scientific analysis of the resulting datasets, research will apply SPLASH observations and the resulting enhanced process-understanding to evaluate and improve NOAA's latest suite of modeling tools, including the Unified Forecast System, Rapid Refresh Forecast System, and National Water Model. The ultimate goal of this project will be improved prediction of weather and water in the Colorado mountains and beyond to inform societal preparedness and response. Funding Agency: University of Colorado - Boulder; Cooperative Institute for Research in Environmental Sciences (CIRES) Funding Agency: Rocky Mountain Biological Laboratory Funding Agency: US Department of Energy Funding Agency: Black Swift Technologies Funding Agency: Colorado State University Funding Agency: Lawrence Berkeley National Laboratory Funding Agency: NOAA Global Monitoring Laboratory (GML) Funding Agency: NOAA Physical Sciences Laboratory (PSL) Funding Agency: National Center for Atmospheric Research (NCAR) Funding Agency: National Oceanic and Atmospheric Administration (NOAA) completed historicalArchive NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information pointOfContact asNeeded https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0305474 Preview graphic PNG 0305474 NCEI ACCESSION NUMBER 2025-06-17 publication Albedo LONGWAVE IRRADIANCE SHORTWAVE IRRADIANCE UPWELLING IRRADIANCE theme NODC DATA TYPES THESAURUS radiometer instrument NODC INSTRUMENT TYPES THESAURUS in situ meteorological theme NODC OBSERVATION TYPES THESAURUS NOAA Global Monitoring Laboratory NOAA Physical Sciences Laboratory dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS NOAA Physical Sciences Laboratory dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS meteorology theme WMO_CategoryCode 2012-09-15 publication DOC/NOAA/OAR/ESRL/GMD > Global Monitoring Division, Earth System Research Laboratory, NOAA, U.S. Department of Commerce DOC/NOAA/OAR/ESRL/PSL > Physical Sciences Laboratory, Earth System Research Laboratory, OAR, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian SPLASH - Study of Precipitation, the Lower Atmosphere, and Surface for Hydrometeorology project Provider Project Names EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > ALBEDO EARTH SCIENCE > OCEANS > OCEAN OPTICS > IRRADIANCE theme Global Change Master Directory (GCMD) Science Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian channel channel_wavelength_mfr channel_wavelength_mfrsr downwelling_hemispheric_irradiance downwelling_hemispheric_irradiance_1625nm solar_azimuth_angle solar_zenith_angle surface_albedo time upwelling_hemispheric_irradiance upwelling_hemispheric_irradiance_1625nm theme Provider Keywords RADIOMETERS instrument Global Change Master Directory (GCMD) Instrument Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Multifilter Radiometer (MFR) Multifilter Rotating Shadowband Radiometer (MFRSR) Multifilter Rotating Shadowband Radiometer (MFRSR) & Multifilter Radiometer (MFR) tifilter Rotating Shadowband Radiometer (MFRSR) instrument Provider Instruments CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > COLORADO place Global Change Master Directory (GCMD) Location Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Y7DRRG Send2NCEI Submission Package ID accessLevel: public otherRestrictions Cite as: Telg, Hagen; Sedlar, Joseph; Riihimaki, Laura D.; Soldo, Logan; Stierle, Scott; Hall, Emiel; Hodges, Gary; Lantz, Kathleen O.; Ballard, Brad (2025). SPLASH Field Study; Spectral Surface Albedo Observations from NOAA GML/GRAD and CIRES at Brush Creek (CBC) (NCEI Accession 0305474). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/2yzw-qb93. Accessed [date]. Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives. otherRestrictions 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. license This dataset has been dedicated to the public domain under the Creative Commons CC0 1.0 Universal (CC0 1.0) Public Domain Dedication. SPDX License: Creative Commons Zero v1.0 Universal (CC0-1.0) Telg, H., Sedlar, J., Riihimaki, L., Soldo, L., Stierle, S., Hall, E., Hodges, G., & Lantz, K. (2025). Spectral Surface Albedo Observations from NOAA GML/GRAD and CIRES during the SPLASH Campaign [Data set]. Zenodo. https://doi.org/10.5281/zenodo.15531691 2025 publication International DOI Foundation (IDF) https://doi.org/10.5281/zenodo.15531691 https://doi.org/10.5281/zenodo.15531691 HTTPS https://doi.org/10.5281/zenodo.15531691 related dataset information Telg, Hagen author Sedlar, Joseph author Riihimaki, Laura author Soldo, Logan author Stierle, Scott author Hall, Emiel author Hodges, Gary author Lantz, Kathleen author Zenodo publisher tableDigital crossReference sciencePaper eng; USA utf8 environment oceans climatologyMeteorologyAtmosphere -106.920904 -106.920904 38.859127 38.859127 2021-10-17 2023-06-23 NOAA National Centers for Environmental Information +1-301-713-3277 ncei.info@noaa.gov pointOfContact In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media. Contact NCEI for other distribution options and instructions. netCDF netCDF-4 CF-1.8 252 https://doi.org/10.25921/2yzw-qb93 HTTPS Web browser NCEI Dataset Landing Page Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/archive/accession/oas/305474 HTTPS Web browser Descriptive Information Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/archive/accession/download/305474 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0234/0305474/ FTP Any FTP client FTP These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP). download dataset NCEI Accession 0305474 v1.1 was published. 2025-06-26T15:22:39Z NCEI Accession 0305474 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0305474/1.1 HTTPS NCEI Accession 0305474 v1.1 published 2025-06-26T15:22:39Z download dataset Parameter or Variable: time (measured); Units: second; Observation Category: in situ; Sampling Instrument: Multifilter Rotating Shadowband Radiometer (MFRSR) & Multifilter Radiometer (MFR); Sampling and Analyzing Method: seconds since 2021-10-17 17:58:39 Parameter or Variable: channel (measured); Units: nm; Observation Category: in situ; Sampling Instrument: Multifilter Rotating Shadowband Radiometer (MFRSR) & Multifilter Radiometer (MFR); Sampling and Analyzing Method: Nominal channel wavelength Parameter or Variable: surface_albedo (measured); Units: 1; Observation Category: in situ; Sampling Instrument: Multifilter Rotating Shadowband Radiometer (MFRSR) & Multifilter Radiometer (MFR); Sampling and Analyzing Method: Spectral surface albedo derived from the ratio of upwelling and downwelling irradiance Parameter or Variable: downwelling_hemispheric_irradiance (measured); Units: W m-2 nm-1; Observation Category: in situ; Sampling Instrument: tifilter Rotating Shadowband Radiometer (MFRSR); Sampling and Analyzing Method: Global downwelling irradiance from MFRSR Parameter or Variable: upwelling_hemispheric_irradiance (measured); Units: W m-2 nm-1; Observation Category: in situ; Sampling Instrument: Multifilter Radiometer (MFR); Sampling and Analyzing Method: Upwelling irradiance from MFR Parameter or Variable: downwelling_hemispheric_irradiance_1625nm (measured); Units: 1; Observation Category: in situ; Sampling Instrument: Multifilter Rotating Shadowband Radiometer (MFRSR) & Multifilter Radiometer (MFR); Sampling and Analyzing Method: Relative downwelling irradiance at 1625 nm Parameter or Variable: upwelling_hemispheric_irradiance_1625nm (measured); Units: 1; Observation Category: in situ; Sampling Instrument: Multifilter Rotating Shadowband Radiometer (MFRSR) & Multifilter Radiometer (MFR); Sampling and Analyzing Method: Relative upwelling irradiance at 1625 nm Parameter or Variable: solar_zenith_angle (measured); Units: degree; Observation Category: in situ; Sampling Instrument: Multifilter Rotating Shadowband Radiometer (MFRSR) & Multifilter Radiometer (MFR); Sampling and Analyzing Method: Solar zenith angle in degrees Parameter or Variable: solar_azimuth_angle (measured); Units: degree; Observation Category: in situ; Sampling Instrument: Multifilter Rotating Shadowband Radiometer (MFRSR) & Multifilter Radiometer (MFR); Sampling and Analyzing Method: Solar azimuth angle in degrees Parameter or Variable: channel_wavelength_mfr (measured); Units: nm; Observation Category: in situ; Sampling Instrument: Multifilter Radiometer (MFR); Sampling and Analyzing Method: MFR channel central wavelengths in nanometers Parameter or Variable: channel_wavelength_mfrsr (measured); Units: nm; Observation Category: in situ; Sampling Instrument: Multifilter Rotating Shadowband Radiometer (MFRSR); Sampling and Analyzing Method: MFRSR channel central wavelengths in nanometers asNeeded Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness. NOAA National Centers for Environmental Information custodian radiometer radiometer radiometer