gov.noaa.nodc:0301002 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 2026-04-08T17:08:28Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) SPLASH Field Study; NOAA and CIRES Ceilometer Cloud Data Products at Kettle Ponds, Colorado, 2021-10-19 to 2023-08-15 (NCEI Accession 0301002) 2025-02-03 publication 2025-01-22 creation International DOI Foundation (IDF) 10.25921/5ajc-sm08 NOAA National Centers for Environmental Information gov.noaa.nodc:0301002 NCEI Archive Management System 0301002 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 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 Christian Herrera NOAA Global Monitoring Laboratory (GML) christian.herrera@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 Ballard, Brad NOAA Earth System Research Laboratory, Physical Sciences Laboratory https://psl.noaa.gov/ HTTPS NOAA Physical Sciences Laboratory (PSL) website Institution web page information author 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 Herrera, Christian 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 NOAA Global Monitoring Laboratory https://gml.noaa.gov/ HTTPS NOAA Global Monitoring Laboratory (GML) 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 From fall 2021 through summer 2023, NOAA Global Monitoring Laboratory (GML) and the Cooperative Institute for Research in Environmental Sciences (CIRES) 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. The NOAA GML Radiation, Aerosols, and Cloud Division (G-RAD) and CIRES, University of Colorado Boulder, operated Vaisala CL51 ceilometers at the Kettle Ponds (CKP) and Brush Creek (CBC) observatory field sites during the SPLASH experiment. The cloud product files were produced in order to condense the wealth of level 0 data streams and instrument health checks in order to focus on the primary data observations/products these ceilometers produce; namely attenuated backscatter coefficient profiles (aerosol and cloud hydrometeor backscatter) cloud detection status, and cloud base height above ground level. Note, Vaisala’s BL View retrieved boundary layer height estimates are not included in these files but will be archived as separate data product/data files. The files were produced daily at each location. The CL51 ceilometers were deployed in early- to mid-October 2021, with data collection occurring from 2021-10-19 through 2023-08-15 at the Kettle Ponds site. A separate archive is available for the data collected at the Brush Creek location. 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: NOAA Global Monitoring Laboratory (GML) Funding Agency: Black Swift Technologies Funding Agency: Rocky Mountain Biological Laboratory Funding Agency: Cooperative Institute for Research in Atmospheric Science Funding Agency: US Department of Energy Funding Agency: Colorado State University Funding Agency: Lawrence Berkeley National Laboratory Funding Agency: National Center for Atmospheric Research Funding Agency: NOAA Physical Sciences Laboratory Funding Agency: US National Oceanic and Atmospheric Administration Funding Agency: University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences 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:0301002 Preview graphic PNG 0301002 NCEI ACCESSION NUMBER 2024-12-18 publication cloud height theme NODC DATA TYPES THESAURUS ceilometer instrument NODC INSTRUMENT TYPES THESAURUS in situ 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 climatology 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 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 > CLOUDS > CLOUD PROPERTIES > CLOUD HEIGHT 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 byte cloud_layer(cloud_layer) float backscatter_profile(time, range) float cloud_status(time) int range(range) int64 time(time) theme Provider Keywords CEILOMETERS > CEILOMETERS 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 Vaisala CL51 ceilometer 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 0NLEAM Send2NCEI Submission Package ID accessLevel: Public otherRestrictions Cite as: Ballard, Brad; Telg, Hagen; Sedlar, Joseph; Herrera, Christian; Stierle, Scott; NOAA Global Monitoring Laboratory (2025). SPLASH Field Study; NOAA and CIRES Ceilometer Cloud Data Products at Kettle Ponds, Colorado, 2021-10-19 to 2023-08-15 (NCEI Accession 0301002). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/5ajc-sm08. 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. Telg, H., Sedlar, J., Herrera, C., & STIERLE, S. C. O. T. T. (2024). NOAA GML and CIRES/Uni. of Colorado-Boulder Ceilometer Cloud Data Products at Kettle Ponds (CKP) for SPLASH (Version 1.3.2) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.10520197 2024 publication International DOI Foundation (IDF) https://doi.org/10.5281/zenodo.10520197 https://doi.org/10.5281/zenodo.10520197 HTTPS https://doi.org/10.5281/zenodo.10520197 related dataset information Telg, Hagen author Sedlar, Joseph author Herrera, Christian author STIERLE, SCOTT author Zenodo publisher tableDigital crossReference project eng; USA utf8 environment climatologyMeteorologyAtmosphere 106.973099 106.973099 38.9417 38.9417 2021-10-19 2023-08-15 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 2524.972 https://doi.org/10.25921/5ajc-sm08 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/301002 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/301002 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0234/0301002/ 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 0301002 v1.1 was published. 2025-02-03T19:12:47Z NCEI Accession 0301002 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0301002/1.1 HTTPS NCEI Accession 0301002 v1.1 published 2025-02-03T19:12:47Z download dataset Parameter or Variable: int64 time(time) (measured); Units: seconds; Observation Category: in situ; Sampling Instrument: Vaisala CL51 ceilometer; Sampling and Analyzing Method: time:units = "seconds since 1900-01-01T00:00:00+00:00" ; time:calendar = "proleptic_gregorian" Parameter or Variable: int range(range) (measured); Units: meter; Observation Category: in situ; Sampling Instrument: Vaisala CL51 ceilometer; Sampling and Analyzing Method: range:long_name = "Distance from ground" ; range:units = "m" ; range:standard_name = "distance" ; range:axis = "Z" ; range:positive = "up" Parameter or Variable: byte cloud_layer(cloud_layer) (measured); Units: 1; Observation Category: in situ; Sampling Instrument: Vaisala CL51 ceilometer; Sampling and Analyzing Method: cloud_layer:long_name = "Cloud layer index" ; cloud_layer:units = "1" ; cloud_layer:axis = "Z" ; cloud_layer:positive = "up" Parameter or Variable: float backscatter_profile(time, range) (measured); Units: 10e-9 m^-1 sr^-1; Observation Category: in situ; Sampling Instrument: Vaisala CL51 ceilometer; Sampling and Analyzing Method: backscatter_profile:_FillValue = NaNf ; backscatter_profile:long_name = "2-D ceilometer signal backscatter profile." ; backscatter_profile:units = "10e-9 m^-1 sr^-1" ; backscatter_profile:comments = "Range-corrected-scattering" Parameter or Variable: float cloud_status(time) (measured); Units: 1; Observation Category: in situ; Sampling Instrument: Vaisala CL51 ceilometer; Sampling and Analyzing Method: cloud_status:_FillValue = NaNf ; cloud_status:long_name = "Cloud detection status." ; cloud_status:units = "1" ; cloud_status:flag_values = "0,1,2,3,4" ; cloud_status:flag_0 = "No significant backscatter." ; cloud_status:flag_1 = "One cloud layer detected." ; cloud_status:flag_2 = "Two cloud layers detected." ; cloud_status:flag_3 = "Three cloud layers detected." ; cloud_status:flag_4 = "Full obscuration/vertical visibility mode. First cloud_base will report vertical visibility and second cloud_base will report highest signal" ; cloud_status:comments = "When cloud_status=4 there is an optically thick cloud that obscures the signal. Therefore it is not possible to discern additional cloud layers above it so the vertical visibility and highest signal are reported instead." asNeeded Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness. NOAA National Centers for Environmental Information custodian ceilometer ceilometer Ceilometers are devices using a laser or other light source to determine the height of a cloud base. An optical ceilometer uses triangulation to determine the height of a spot of light projected onto the base of the cloud; a laser ceilometer determines the height by measuring the time required for a pulse of light to be scattered back from the cloud base.