gov.noaa.nodc:0303808 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 2026-04-08T15:25:11Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) SPLASH Field Study; NOAA PSL thermodynamic profiles retrieved from ASSIST infrared radiances with the optimal estimation physical retrieval TROPoe (NCEI Accession 0303808) 2025-04-29 publication 2025-04-25 creation International DOI Foundation (IDF) 10.25921/wcbz-8383 NOAA National Centers for Environmental Information gov.noaa.nodc:0303808 NCEI Archive Management System 0303808 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 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 Bianca Adler NOAA Physical Sciences Laboratory (PSL) bianca.adler@noaa.gov https://psl.noaa.gov/ HTTPS NOAA Physical Sciences Laboratory (PSL) website Institution web page information collaborator Laura Bianco NOAA Physical Sciences Laboratory (PSL) laura.bianco@noaa.gov https://psl.noaa.gov/ HTTPS NOAA Physical Sciences Laboratory (PSL) website Institution web page information collaborator Irina Djalalova NOAA Physical Sciences Laboratory (PSL) irina.v.djalalova@noaa.gov https://psl.noaa.gov/ HTTPS NOAA Physical Sciences Laboratory (PSL) website Institution web page information collaborator Timothy Myers University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) timothy.myers-1@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 James Wilczak NOAA Physical Sciences Laboratory (PSL) james.m.wilczak@noaa.gov https://psl.noaa.gov/ HTTPS NOAA Physical Sciences Laboratory (PSL) 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 Adler, Bianca NOAA Physical Sciences Laboratory (PSL) https://psl.noaa.gov/ HTTPS NOAA Physical Sciences Laboratory (PSL) website Institution web page information author Bianco, Laura NOAA Physical Sciences Laboratory (PSL) https://psl.noaa.gov/ HTTPS NOAA Physical Sciences Laboratory (PSL) website Institution web page information author Djalalova, Irina NOAA Physical Sciences Laboratory (PSL) https://psl.noaa.gov/ HTTPS NOAA Physical Sciences Laboratory (PSL) website Institution web page information author Myers, Timothy 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 Wilczak, James NOAA Physical Sciences Laboratory (PSL) https://psl.noaa.gov/ HTTPS NOAA Physical Sciences Laboratory (PSL) website Institution web page information author NOAA Physical Science Laboratory https://psl.noaa.gov/ HTTPS NOAA Physical Sciences Laboratory (PSL) 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 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 This dataset contains daily files with thermodynamic profiles retrieved with the optimal estimation physical retrieval TROPoe (TROPoe, Turner and Löhnert 2014; Turner and Blumberg 2019; Turner and Löhnert 2021). The profiles are retrieved every 10 min from instantaneous radiances observed with an Atmospheric Sounder Spectrometer by Infrared Spectral Technology (ASSIST, Rochette et al. 2009). The ASSIST was deployed at Roaring Judy in the East River Watershed in Colorado (38.7169321 N, 106.853031 W, 2494 m above mean sea level) from 21 October 2021 to 28 January 2022 as part of the National Oceanic and Atmospheric Administration (NOAA) Study of Precipitation, the Lower Atmosphere, and Surface for Hydrometeorology (SPLASH) campaign. The spectral bands used in the retrieval are in the wavenumber range from 612 - 905.4 cm-1 and are specified in Turner and Löhnert (2021). Additional input data in TROPoe are cloud base height from a collocated ceilometer, temperature, water vapor mixing ratio, and pressure from colocated near-surface measurements and from hourly analysis profiles from the operational Rapid Refresh (RAP, Benjamin et al. 2021) weather prediction model at the closest grid point. The latter are used only outside the atmospheric boundary layer (ABL) above 4 km above ground level (AGL) and provide information in the middle and upper troposphere where little to no information content is available from the infrared radiances. In addition to these temporally resolved input data, TROPoe requires an a priori dataset (prior) which provides mean climatological estimates of thermodynamic profiles and specifies how temperature and humidity covary with height as an input (for details see e.g. Djalalova et al. 2022). The prior is a key component of the retrieval and provides a constraint on the ill-posed inversion problem. For this study, we computed the prior from operational radiosondes launched near Denver, CO, and re-centered the mean profiles of water vapor and temperature to account for the elevation difference between the East River Valley and the launch site near Denver to get a more representative prior. The file format is netcdf and the file naming conventions are NOAA_PSL_ASSIST_RoaringJudy_yyyymmdd.cdf with yyyy: Year mm: Month dd: Day The time stamp of all data is in UTC. Note that the vertical resolution of the retrieved profiles decreases with height, because of the broadening of the weighting function as a function of height. Thus, there are relatively few independent pieces of information in the profiles, this is reflected in the cumulative degree of freedom variables. The majority of the information from the ASSIST is in the lowest 2-3 km, above that most information comes from the RAP model. Because of strong emission in the infrared from clouds, clouds strongly impact the ability to retrieve profiles from the ASSIST and care should be taken when analyzing the retrievals in the presence of clouds. 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:0303808 Preview graphic PNG 0303808 NCEI ACCESSION NUMBER 2025-04-24 publication AIR TEMPERATURE BAROMETRIC PRESSURE Carbon Dioxide - Air cloud height Cloud Optical Depth dew point Divergence Methane (CH4) Mixing Ratio nitrous oxide (N2O) RELATIVE HUMIDITY theme NODC DATA 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 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 UCO/CIRES > Cooperative Institute for Research in Environmental Sciences, University of Colorado 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 CHEMISTRY > CARBON AND HYDROCARBON COMPOUNDS > ATMOSPHERIC CARBON DIOXIDE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > SURFACE TEMPERATURE > DEW POINT TEMPERATURE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > WATER VAPOR INDICATORS > HUMIDITY > HUMIDITY MIXING RATIO EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > WATER VAPOR INDICATORS > HUMIDITY > RELATIVE HUMIDITY EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > WIND DYNAMICS > DIVERGENCE EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD MICROPHYSICS > CLOUD OPTICAL DEPTH/THICKNESS EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD PROPERTIES > CLOUD HEIGHT EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY 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 base_time cdfs_temperature cdfs_waterVapor dewpt height hour pressure rh sigma_temperature sigma_waterVapor theta thetae time_offset waterVapor theme Provider Keywords Atmospheric Sounder Spectrometer by Infrared Spectral Technology (ASSIST) 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 L1E07P Send2NCEI Submission Package ID accessLevel: Public otherRestrictions Cite as: Ballard, Brad; Adler, Bianca; Bianco, Laura; Djalalova, Irina; Myers, Timothy; Wilczak, James; NOAA Physical Science Laboratory; University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) (2025). SPLASH Field Study; NOAA PSL thermodynamic profiles retrieved from ASSIST infrared radiances with the optimal estimation physical retrieval TROPoe (NCEI Accession 0303808). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/wcbz-8383. Accessed [date]. 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SPDX License: Creative Commons Zero v1.0 Universal (CC0-1.0) Adler, B., Bianco, L., Djalalova, I., Myers, T., & Wilczak, J. (2022). NOAA PSL thermodynamic profiles retrieved from ASSIST infrared radiances with the optimal estimation physical retrieval TROPoe during SPLASH (Version 1.0.0) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.7435059 2022 publication International DOI Foundation (IDF) https://doi.org/10.5281/zenodo.7435059 https://doi.org/10.5281/zenodo.7435059 HTTPS https://doi.org/10.5281/zenodo.7435059 related dataset information Adler, Bianca author Bianco, Laura author Djalalova, Irina author Myers, Timothy author Wilczak, James author Zenodo publisher tableDigital crossReference project eng; USA utf8 environment oceans climatologyMeteorologyAtmosphere -106.853031 -106.853031 38.716932 38.716932 2021-10-21 2022-01-28 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 2430.132 https://doi.org/10.25921/wcbz-8383 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/303808 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/303808 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0238/0303808/ 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 0303808 v1.1 was published. 2025-04-29T19:19:53Z NCEI Accession 0303808 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0303808/1.1 HTTPS NCEI Accession 0303808 v1.1 published 2025-04-29T19:19:53Z download dataset Parameter or Variable: base_time (calculated); Units: second; Observation Category: in situ; Sampling Instrument: Atmospheric Sounder Spectrometer by Infrared Spectral Technology (ASSIST); Sampling and Analyzing Method: Seconds (since 00 UTC 1 Jan 1970) Parameter or Variable: time_offset (calculated); Units: second; Observation Category: in situ; Sampling Instrument: Atmospheric Sounder Spectrometer by Infrared Spectral Technology (ASSIST); Sampling and Analyzing Method: Second (since base_time) Parameter or Variable: hour (calculated); Units: hour; Observation Category: in situ; Sampling Instrument: Atmospheric Sounder Spectrometer by Infrared Spectral Technology (ASSIST); Sampling and Analyzing Method: Hours since OOUTC this day Parameter or Variable: height (calculated); Units: km; Observation Category: in situ; Sampling Instrument: Atmospheric Sounder Spectrometer by Infrared Spectral Technology (ASSIST); Sampling and Analyzing Method: km AGL Parameter or Variable: temperature (measured); Units: degrees C; Observation Category: in situ; Sampling Instrument: Atmospheric Sounder Spectrometer by Infrared Spectral Technology (ASSIST); Sampling and Analyzing Method: C, temperature Parameter or Variable: waterVapor (measured); Units: g/kg; Observation Category: in situ; Sampling Instrument: Atmospheric Sounder Spectrometer by Infrared Spectral Technology (ASSIST); Sampling and Analyzing Method: g/kg, water vapor mixing ratio Parameter or Variable: theta (calculated); Units: degrees K; Observation Category: in situ; Sampling Instrument: Atmospheric Sounder Spectrometer by Infrared Spectral Technology (ASSIST); Sampling and Analyzing Method: K, potential temperature Parameter or Variable: pressure (calculated); Units: hPa; Observation Category: in situ; Sampling Instrument: Atmospheric Sounder Spectrometer by Infrared Spectral Technology (ASSIST); Sampling and Analyzing Method: hPa, pressure Parameter or Variable: rh (calculated); Units: %; Observation Category: in situ; Sampling Instrument: Atmospheric Sounder Spectrometer by Infrared Spectral Technology (ASSIST); Sampling and Analyzing Method: %, relative humidity Parameter or Variable: dewpt (calculated); Units: degrees C; Observation Category: in situ; Sampling Instrument: Atmospheric Sounder Spectrometer by Infrared Spectral Technology (ASSIST); Sampling and Analyzing Method: C, dew point temperature Parameter or Variable: thetae (calculated); Units: degrees K; Observation Category: in situ; Sampling Instrument: Atmospheric Sounder Spectrometer by Infrared Spectral Technology (ASSIST); Sampling and Analyzing Method: K, equivalent potential temperature Parameter or Variable: sigma_temperature (calculated); Units: degrees C; Observation Category: in situ; Sampling Instrument: Atmospheric Sounder Spectrometer by Infrared Spectral Technology (ASSIST); Sampling and Analyzing Method: C, 1-sigma uncertainty temperature Parameter or Variable: sigma_waterVapor (calculated); Units: g/kg; Observation Category: in situ; Sampling Instrument: Atmospheric Sounder Spectrometer by Infrared Spectral Technology (ASSIST); Sampling and Analyzing Method: g/kg, 1-sigma uncertainty water vapor Parameter or Variable: cdfs_temperature (calculated); Units: unitless; Observation Category: in situ; Sampling Instrument: Atmospheric Sounder Spectrometer by Infrared Spectral Technology (ASSIST); Sampling and Analyzing Method: cumulative degrees of freedom for temperature Parameter or Variable: cdfs_waterVapor (calculated); Units: unitless; Observation Category: in situ; Sampling Instrument: Atmospheric Sounder Spectrometer by Infrared Spectral Technology (ASSIST); Sampling and Analyzing Method: cumulative degrees of freedom for water vapor asNeeded Metadata are developed, maintained and distributed by NCEI. 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