gov.noaa.nodc:0304717 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 2026-02-06T16:03:14Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) SPLASH Field Study; CLAMPS2 Doppler Lidar VAD Data (NCEI Accession 0304717) 2025-06-04 publication 2025-05-30 creation International DOI Foundation (IDF) 10.25921/rpx2-t532 NOAA National Centers for Environmental Information gov.noaa.nodc:0304717 NCEI Archive Management System 0304717 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 Elizabeth Smith NOAA National Severe Storms Laboratory (NSSL) elizabeth.smith@noaa.gov https://www.nssl.noaa.gov/ HTTPS NOAA National Severe Storms Laboratory (NSSL) website Institution web page information collaborator Tyler Bell NOAA National Severe Storms Laboratory (NSSL) tyler.bell@noaa.gov https://www.nssl.noaa.gov/ HTTPS NOAA National Severe Storms Laboratory (NSSL) website Institution web page information collaborator Lydia Bunting NOAA National Severe Storms Laboratory (NSSL) lydia.bunting@noaa.gov https://www.nssl.noaa.gov/ HTTPS NOAA National Severe Storms Laboratory (NSSL) 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 Smith, Elizabeth NOAA National Severe Storms Laboratory https://www.nssl.noaa.gov/ HTTPS NOAA National Severe Storms Laboratory (NSSL) website Institution web page information author Bell, Tyler NOAA National Severe Storms Laboratory https://www.nssl.noaa.gov/ HTTPS NOAA National Severe Storms Laboratory (NSSL) website Institution web page information author Bunting, Lydia NOAA National Severe Storms Laboratory https://www.nssl.noaa.gov/ HTTPS NOAA National Severe Storms Laboratory (NSSL) website Institution web page information author Ballard, Brad NOAA Physical Sciences Laboratory 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 National Severe Storms Laboratory (NSSL) https://www.nssl.noaa.gov/ HTTPS NOAA National Severe Storms Laboratory (NSSL) website Institution web page information contributor tableDigital These files contain 24-hour periods of data collected from the CLAMPS2 Halo Streamline XR+ Doppler lidar. The Doppler lidar conducts regular conical scans at a set elevation angle. These data are then passed through a typical VAD algorithm to retrieve horizontal wind speed and direction profiles. These data were collected during the SPLASH project. Data collection and processing: For the SPLASH campaign, the CLAMPS2 Doppler lidar collected PPI scans at 60 deg elevation every 5 minutes. The Doppler lidar provides range-resolved, line-of-sight measurements of radial velocity, intensity (signal-to-noise ratio [SNR]+1), and attenuated backscatter. In the case of PPI scans meant for VAD analysis, these data are passed through a VAD code to produce profiles of horizontal wind speed and direction. Vertical velocity is also provided, but it is not as high quality as vertical velocity more directly measured by vertical stares. The provided files provide the intensity field (SNR+1), which can be used as a ‘filter’ for noise. A good rule of thumb cutoff is 1.01. Data format: Data are provided in netcdf format. The typical naming convention is clampsdlvad1turnC2.c1.YYYYMMDD.HHmmss.cdf, following closely to ARM file naming convention. The files have time and height dimensions. 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:0304717 Preview graphic PNG 0304717 NCEI ACCESSION NUMBER 2025-05-28 publication WIND DIRECTION WIND SPEED theme NODC DATA TYPES THESAURUS LIDAR instrument NODC INSTRUMENT TYPES THESAURUS meteorological remote sensing theme NODC OBSERVATION TYPES THESAURUS NOAA National Severe Storms 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/PSL > Physical Sciences Laboratory, Earth System Research Laboratory, OAR, NOAA, U.S. Department of Commerce DOC/NOAA/OAR/NSSL > National Severe Storms Laboratory, OAR, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2026 revision 23 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 > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS > WIND DIRECTION EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS > WIND SPEED EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > UPPER LEVEL WINDS theme Global Change Master Directory (GCMD) Science Keywords 2026 revision 23 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 alt base_time height hour intensity lat lon rms time_offset wdir wspd theme Provider Keywords LIDAR > Light Detection and Ranging instrument Global Change Master Directory (GCMD) Instrument Keywords 2026 revision 23 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 Halo Streamline XR+ and Doppler lidar (DL) instrument Provider Instruments CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > COLORADO place Global Change Master Directory (GCMD) Location Keywords 2026 revision 23 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 X2F3HA Send2NCEI Submission Package ID accessLevel: Public otherRestrictions Cite as: Smith, Elizabeth; Bell, Tyler; Bunting, Lydia; Ballard, Brad (2025). SPLASH Field Study; CLAMPS2 Doppler Lidar VAD Data (NCEI Accession 0304717). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/rpx2-t532. 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 a Creative Commons CC0 1.0 Universal (CC0 1.0) Public Domain Dedication. SPDX License: Creative Commons Zero v1.0 Universal (CC0-1.0) CLAMPS2 Doppler Lidar VAD Data 2022 publication https://data.nssl.noaa.gov/thredds/catalog/FRDD/CLAMPS/campaigns/SPLASH/CLAMPS2/dlvad/catalog.html HTTPS https://data.nssl.noaa.gov/thredds/catalog/FRDD/CLAMPS/campaigns/SPLASH/CLAMPS2/dlvad/catalog.html related dataset information NOAA National Severe Storms Laboratory publisher crossReference Smith, E., Bell, T., & Bunting, L. (2022). CLAMPS2 Doppler Lidar VAD Data [Data set]. Zenodo. https://doi.org/10.5281/zenodo.7308917 2022 publication International DOI Foundation (IDF) https://doi.org/10.5281/zenodo.7308917 https://doi.org/10.5281/zenodo.7308917 HTTPS https://doi.org/10.5281/zenodo.7308917 related dataset information Smith, Elizabeth author Bell, Tyler author Bunting, Lydia author Zenodo publisher tableDigital crossReference eng; USA utf8 environment oceans climatologyMeteorologyAtmosphere -106.98782 -106.98782 38.86971 38.86971 2021-10-06 2022-01-18 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. CDF DOCX 3328.884 https://doi.org/10.25921/rpx2-t532 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/304717 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/304717 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0231/0304717/ 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 0304717 v1.1 was published. 2025-06-04T20:01:17Z NCEI Accession 0304717 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0304717/1.1 HTTPS NCEI Accession 0304717 v1.1 published 2025-06-04T20:01:17Z download dataset Parameter or Variable: base_time (measured); Units: second; Observation Category: in situ; Sampling Instrument: Halo Streamline XR+ and Doppler lidar (DL); Sampling and Analyzing Method: Seconds (since 00 UTC 1 Jan 1970) Parameter or Variable: time_offset (measured); Units: second; Observation Category: in situ; Sampling Instrument: Halo Streamline XR+ and Doppler lidar (DL); Sampling and Analyzing Method: Second (since base_time) Parameter or Variable: hour (measured); Units: hour; Observation Category: in situ; Sampling Instrument: Halo Streamline XR+ and Doppler lidar (DL); Sampling and Analyzing Method: Hours since 00UTC this day Parameter or Variable: height (measured); Units: km; Observation Category: in situ; Sampling Instrument: Halo Streamline XR+ and Doppler lidar (DL); Sampling and Analyzing Method: km AGL Parameter or Variable: wspd (measured); Units: m/s; Observation Category: in situ; Sampling Instrument: Halo Streamline XR+ and Doppler lidar (DL); Sampling and Analyzing Method: m/s, wind speed Parameter or Variable: wdir (measured); Units: degree; Observation Category: in situ; Sampling Instrument: Halo Streamline XR+ and Doppler lidar (DL); Sampling and Analyzing Method: Deg, wind direction Parameter or Variable: rms (measured); Units: m/s; Observation Category: in situ; Sampling Instrument: Halo Streamline XR+ and Doppler lidar (DL); Sampling and Analyzing Method: m/s, RMS between observed velocity & VAD fitted value Parameter or Variable: intensity (measured); Units: unitless; Observation Category: in situ; Sampling Instrument: Halo Streamline XR+ and Doppler lidar (DL); Sampling and Analyzing Method: Unitless, SNR+1 Parameter or Variable: lat (measured); Units: degrees N; Observation Category: in situ; Sampling Instrument: Halo Streamline XR+ and Doppler lidar (DL); Sampling and Analyzing Method: Deg N, latitude Parameter or Variable: lon (measured); Units: degrees W; Observation Category: in situ; Sampling Instrument: Halo Streamline XR+ and Doppler lidar (DL); Sampling and Analyzing Method: Deg W, longitude Parameter or Variable: alt (measured); Units: meter; Observation Category: in situ; Sampling Instrument: Halo Streamline XR+ and Doppler lidar (DL); Sampling and Analyzing Method: m MSL, altitude above mean sea level asNeeded Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness. NOAA National Centers for Environmental Information custodian LIDAR LIDAR Light Detection and Ranging Remote sensing instrument with laser and receiver that uses time, strength and polarization of return to determine characteristics of target.