Surface Airways Observations (SAO) Hourly Data 1928-1948 (CDMP)

CDMP SAO 28-48 Hourly

The dataset consists of hourly U.S. surface airways observations (SAO). These observations extend as far back as 1928, from the time when commercial aviation began in the United States and meteorological observing stations were established at many airports (although occasionally, early-period SAO's were taken at U.S. Weather Bureau city offices). For most stations, this dataset extends through June of 1948. The major data variables are as follows: WBAN Station Identification Number, observational type, ceiling and cloud, visibility, present weather data, temperature, wind and pressure. The observations are generally recorded for the 24-hour period midnight to midnight, although many stations did not record 24-hour observations, especially early in the period when commercial aviation was just getting started. Two output keying formats were created to adjust to an observational form change during the period. One format was generally used for years 1928-33, and the other for sets from around 1934 through June of 1948. Each keying format was designed to reflect the data as entered on the observational form for ease of keying by key entry personnel, who were not trained meteorological technicians. The "raw" observations which comprise the DSI-3851 dataset were quality checked, to include data adjustments, and converted to NCDC's Integrated Surface Hourly (ISH) format.

The complimentary data to this collection can be found in the Surface Weather Observation 1001 Forms (Keyed) collection.
  • Cite this dataset when used as a source.
  • NCEI DSI 3851_01
  • gov.noaa.ncdc:C00623
Other Access
  • NCEI Customer Support (offlineAccess)
    Data in this archival information package are not currently available for public download from NCEI. Please contact NCEI Information Services directly for access to these data.
Distribution Formats
  • CSV
Distributor Customer Engagement Branch
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
1-828-271-4800
ncei.orders@noaa.gov
Dataset Point of Contact Customer Engagement Branch
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
1-828-271-4800
ncei.orders@noaa.gov
Time Period 1928-01-01 to 1948-12-31 (time interval: 1-hour)
Spatial Bounding Box Coordinates
N: 72.0
S: 18.0
E: -66.0
W: 172.0
Spatial Coverage Map
Dataset Information
  • CDMP web page
    Web page describing the program that created this dataset
General Documentation
Associated Resources
Publication Dates
  • publication: 2005-02-03
  • creation: 2005-02-03
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Data Update Frequency Not planned
Purpose Prior to this project, the pre-1948 SAOs were only available in manuscript form. As part of the mission of the National Climatic Data Center's (NCDC) Climate Database Modernization Program (CDMP), NCDC embarked upon a massive project to preserve these paper records, and make their data more accessible. To that end, these records were keyed, leading to this dataset. These observations may be integrated with hourly in-situ datasets to extend the period of record.
Use Limitations
  • These are "raw" keyed data, and have undergone limited quality control or quality assurance checks. A pre-keying check of the original data forms was performed to correct obvious errors, and some internal bounds checking was performed on the data at keying.
Dataset Citation
  • Cite this dataset when used as a source.
Cited Authors
  • Joe Elms
    NCDC Climate Database Modernization Program
Originators
  • Joe Elms
    NCDC Climate Database Modernization Program
Publishers
  • NOAA National Centers for Environmental Information
Theme keywords Global Change Master Directory (GCMD) Science Keywords
  • Earth Science > Atmosphere > Atmospheric Pressure > Atmospheric Pressure Measurements
  • Earth Science > Atmosphere > Atmospheric Temperature > Surface Temperature > Air Temperature
  • Earth Science > Atmosphere > Atmospheric Temperature > Dew Point Temperature
  • Earth Science > Atmosphere > Atmospheric Winds > Surface Winds
  • Earth Science > Atmosphere > Air Quality > Visibility
  • Earth Science > Atmosphere > Clouds > Cloud Properties > Cloud Fraction
  • Earth Science > Atmosphere > Clouds > Cloud Properties > Cloud Height
  • Earth Science > Atmosphere > Precipitation
Data Center keywords Global Change Master Directory (GCMD) Data Center Keywords
  • DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Place keywords Global Change Master Directory (GCMD) Location Keywords
  • Continent > North America > United States Of America
Stratum keywords Global Change Master Directory (GCMD) Location Keywords
  • Vertical Location > Land Surface
  • Vertical Location > Troposphere
Use Constraints
  • Cite this dataset when used as a source.
  • 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.
Access Constraints
  • 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.
Fees
  • In most cases, electronic downloads of the data are free, however fees may apply for data certifications, copies of analog materials, and data distribution on physical media.
Lineage information for: dataset
Lineage Statement Data in this dataset were keyed by contract staff under the Climate Database Modernization Program (CDMP) and sent to NCDC via FTP. Data were also sent to the Northeast Regional Climate Center (NeRCC) in Ithaca, New York, where staff applied automated quality control (QC) routines and sent QC'd data files back to NCDC.
Processor
  • Climate Database Modernization Program
Source Datasets
  • Surface Weather Observations Hourly
    • Surface Weather Observations Hourly Landing Page
      More information about the actual forms used are available in the Surface Weather Observations Hourly landing page.
    • Description of Source: Data are keyed from a subset of Surface Weather Observational paper forms. The period was chosen because the Weather Bureau/Weather Service forms were more consistent during this time period, allowing for faster keying of data.
Lineage information for: repository
Processing Steps
  • 2015-04-22T00:00:00 - NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
Last Modified: 2018-05-25
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