gov.noaa.nodc:0303584 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 2026-07-29T13:19:59Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) SPLASH Field Study; HELiX UAS Solar Irradiance data from 2022-03-12 to 2022-06-04 (NCEI Accession 0303584) 2025-04-18 publication 2025-04-17 creation International DOI Foundation (IDF) 10.25921/1x3z-k658 NOAA National Centers for Environmental Information gov.noaa.nodc:0303584 NCEI Archive Management System 0303584 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 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 Janet Intrieri NOAA Physical Sciences Laboratory (PSL) janet.intrieri@noaa.gov https://psl.noaa.gov/ HTTPS NOAA Physical Sciences Laboratory (PSL) website Institution web page information collaborator Gijs de Boer University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) gijs.deboer@colorado.edu https://cires.colorado.edu/ HTTPS University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website Institution web page information collaborator Jonathan Hamilton University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) jonathan.hamilton@colorado.edu https://cires.colorado.edu/ HTTPS University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website Institution web page information collaborator Radiance Calmer University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) radiance.calmer@colorado.edu https://cires.colorado.edu/ HTTPS University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website Institution web page information collaborator Ballard, Brad NOAA Physical Sciences Laboratory (PSL) https://psl.noaa.gov/ HTTPS NOAA Physical Sciences Laboratory (PSL) website Institution web page information author Intrieri, Janet NOAA Physical Sciences Laboratory (PSL) https://psl.noaa.gov/ HTTPS NOAA Physical Sciences Laboratory (PSL) website Institution web page information author de Boer, Gijs University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) https://cires.colorado.edu/ HTTPS University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website Institution web page information author Hamilton, Jonathan University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) https://cires.colorado.edu/ HTTPS University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website Institution web page information author Calmer, Radiance University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) https://cires.colorado.edu/ HTTPS University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website Institution web page information author University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) https://cires.colorado.edu/ HTTPS University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website Institution web page information contributor NOAA Physical Sciences Laboratory (PSL) https://psl.noaa.gov/ HTTPS NOAA Physical Sciences Laboratory (PSL) website Institution web page information contributor tableDigital From fall 2021 through summer 2023, NOAA and research partners conducted a field study (SPLASH - the Study of Precipitation, the Lower Atmosphere and Surface for Hydrometeorology). This field study established a 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. The ultimate goal of this project is improved prediction of weather and water in the Colorado mountains and beyond to inform societal preparedness and response. This dataset includes data files collected during flights of the HELiX uncrewed aircraft system (UAS). The system was equipped with stabilized up and downward looking pyranometers which measure the incident solar energy, and when used together they can provide information on the reflectivity of the surface. Flights were conducted at the Avery Picnic and Kettle Ponds SPLASH sites during spring 2022 and capture the evolution of the snow surface during spring snow melt. 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:0303584 Preview graphic PNG 0303584 NCEI ACCESSION NUMBER 2025-03-31 publication SHORTWAVE IRRADIANCE UPWELLING IRRADIANCE theme NODC DATA TYPES THESAURUS pyranometer instrument NODC INSTRUMENT TYPES THESAURUS in situ theme NODC OBSERVATION TYPES THESAURUS NOAA Physical Sciences Laboratory University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS NOAA Physical Sciences Laboratory dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS climatology theme WMO_CategoryCode 2012-09-15 publication DOC/NOAA/OAR/ESRL/PSL > Physical Sciences Laboratory, Earth System Research Laboratory, OAR, NOAA, U.S. Department of Commerce UCO/CIRES > Cooperative Institute for Research in Environmental Sciences, University of Colorado 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 > 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 Altitude_AGL Altitude_MSL ErrFlg FltFlg HiGrdFlg LowGrdFlg TreeFlg base_time time_offset theme Provider Keywords PYRANOMETERS > PYRANOMETERS 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 HELiX uncrewed aircraft system (UAS) 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 69CDUE Send2NCEI Submission Package ID accessLevel: public otherRestrictions Cite as: Ballard, Brad; Intrieri, Janet; de Boer, Gijs; Hamilton, Jonathan; Calmer, Radiance (2025). SPLASH Field Study; HELiX UAS Solar Irradiance data from 2022-03-12 to 2022-06-04 (NCEI Accession 0303584). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/1x3z-k658. 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) de Boer, G., Hamilton, J., Intrieri, J., & Calmer, R. (2023). HELiX UAS data for SPLASH 2022 (Version 1) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.7701557 2023 publication International DOI Foundation (IDF) https://doi.org/10.5281/zenodo.7701557 https://doi.org/10.5281/zenodo.7701557 HTTPS https://doi.org/10.5281/zenodo.7701557 related dataset information de Boer, Gijs author Hamilton, Jonathan author Intrieri, Janet author Calmer, Radiance author Zenodo publisher tableDigital crossReference project eng; USA utf8 environment climatologyMeteorologyAtmosphere -106.996855 -106.973006 38.942005 38.972425 2022-03-12 2022-06-04 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. Originator data format 180.544 https://doi.org/10.25921/1x3z-k658 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/303584 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/303584 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0237/0303584/ 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 0303584 v1.1 was published. 2025-04-18T16:08:54Z NCEI Accession 0303584 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0303584/1.1 HTTPS NCEI Accession 0303584 v1.1 published 2025-04-18T16:08:54Z download dataset Parameter or Variable: base_time (measured); Units: second; Observation Category: in situ; Sampling Instrument: HELiX uncrewed aircraft system (UAS); Sampling and Analyzing Method: 'seconds since 2020-01-01 0:00:00 0:00' Datatype: int32 Parameter or Variable: time_offset (measured); Units: second; Observation Category: in situ; Sampling Instrument: HELiX uncrewed aircraft system (UAS); Sampling and Analyzing Method: seconds since 2022-03-12 22:42:48 0:00' Parameter or Variable: FltFlg (measured); Units: unitless; Observation Category: in situ; Sampling Instrument: HELiX uncrewed aircraft system (UAS); Sampling and Analyzing Method: Flag Identifying Aircraft Flight (1=flying) Parameter or Variable: ErrFlg (measured); Units: unitless; Observation Category: in situ; Sampling Instrument: HELiX uncrewed aircraft system (UAS); Sampling and Analyzing Method: Flag Identifying Erroneous Data (0=Good Data) Parameter or Variable: LowGrdFlg (measured); Units: unitless; Observation Category: in situ; Sampling Instrument: HELiX uncrewed aircraft system (UAS); Sampling and Analyzing Method: Flag Identifying Time Spent on low Avery Grid (1=On Grid) Parameter or Variable: HiGrdFlg (measured); Units: unitless; Observation Category: in situ; Sampling Instrument: HELiX uncrewed aircraft system (UAS); Sampling and Analyzing Method: Flag Identifying Time Spent on high Avery Grid (1=On Grid) Parameter or Variable: TreeFlg (measured); Units: unitless; Observation Category: in situ; Sampling Instrument: HELiX uncrewed aircraft system (UAS); Sampling and Analyzing Method: Flag Identifying Time Spent on Avery Tree Triangle (1=On Grid) Parameter or Variable: Latitude (measured); Units: degrees N; Observation Category: in situ; Sampling Instrument: HELiX uncrewed aircraft system (UAS); Sampling and Analyzing Method: Units = 'degree N' Description = 'Aircraft Latitude' Parameter or Variable: Longitude (measured); Units: degrees E; Observation Category: in situ; Sampling Instrument: HELiX uncrewed aircraft system (UAS); Sampling and Analyzing Method: Units = 'degree E' Description = 'Aircraft Longitude' Parameter or Variable: Altitude_MSL (measured); Units: meter; Observation Category: in situ; Sampling Instrument: HELiX uncrewed aircraft system (UAS); Sampling and Analyzing Method: Units = 'm MSL' Description = 'Aircraft Altitude, Relative to Sea Level' Parameter or Variable: Altitude_AGL (measured); Units: meter; Observation Category: in situ; Sampling Instrument: HELiX uncrewed aircraft system (UAS); Sampling and Analyzing Method: Units = 'm AGL' Description = 'Aircraft Altitude, Relative to Take Off Point' asNeeded Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness. NOAA National Centers for Environmental Information custodian pyranometer pyranometer Instrument that measure solar radiation.