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Dataset Overview | National Centers for Environmental Information (NCEI)

Thermographs

EV2 - Thermographs

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The Thermograph data collection consists primary of weekly circular charts recording continuous temperature at a given station. The collection also includes hygrothermographs, which are long rectangular charts which also capture humidity on the same chart. There are hundreds of thousands of thermograph charts in physical media. The online collection only contains a subset of this massive collection. The bulk of the records spans the entire 20th century, although there are records that fall outside this time period.
  • Cite this dataset when used as a source.
  • NCEI DSI 3900_01
  • NCEI Physical Archive Collection: CHTHRM
  • gov.noaa.ncdc:C01008
gov.noaa.ncdc:C01008
Full Text · XML
Order Data
Distribution Formats
  • XML
  • PDF
  • MICROFILM
  • PAPER
  • MICROFICHE
Ordering Instructions Contact NCEI for other distribution options and instructions.
Distributor NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Dataset Point of Contact Customer Engagement Branch
NOAA National Centers for Environmental Information
1-828-271-4800
ncei.orders@noaa.gov
Time Period 1888-01-01 to 2000-12-31
Spatial Bounding Box Coordinates
West: -180.0
East: 180.0
South: -90.0
North: 90.0
Spatial Coverage Map
General Documentation
Publication Dates
  • publication: 2011-03-15
  • revision: 2013-05-02
Data Presentation Form Digital image
Hardcopy image - image archived in analog format
Dataset Progress Status Historical archive - data has been stored in an offline storage facility
Data Update Frequency As needed
Purpose Thermographs can be used to show the rate of temperature and (for hygrothermographs) humidity change over time in a given location. This information can be useful to many industries, including energy and engineering.
Use Limitations
  • Controlled user access to the EV2 system. Thermographs were generally created at stations that also took hourly weather observations, limiting the value of the thermograph to inter-hour temperature readings.
Dataset Citation
  • Cite this dataset when used as a source.
Cited Authors
  • DOC/NOAA/NWS > National Weather Service, NOAA, U.S. Department of Commerce
Originators
  • DOC/NOAA/NWS > National Weather Service, NOAA, U.S. Department of Commerce
Publishers
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Theme keywords Global Change Master Directory (GCMD) Science Keywords
  • Earth Science > Atmosphere > Atmospheric Temperature > Surface Temperature > Air Temperature
  • Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Indicators > Humidity
Global Climate Observing System (GCOS) Essential Climate Variables (ECVs)
  • Atmospheric - Surface - Air Temperature
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
Platform keywords Global Change Master Directory (GCMD) Platform Keywords
  • Meteorological Stations
Instrument keywords Global Change Master Directory (GCMD) Instrument Keywords
  • Hygrothermographs
  • Thermometers
Place keywords Global Change Master Directory (GCMD) Location Keywords
  • Continent > North America > United States Of America
  • Geographic Region > Global Land
Data Resolution keywords Global Change Master Directory (GCMD) Horizontal Data Resolution Keywords
  • Point Resolution
Global Change Master Directory (GCMD) Vertical Data Resolution Keywords
  • Point Resolution
Stratum keywords Global Change Master Directory (GCMD) Location Keywords
  • Vertical Location > Land Surface
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 custom orders, data certifications, copies of analog materials, and data distribution on physical media.
Lineage information for: dataset
Lineage Statement NWS Stations were equipped with hygrothermograph machines. Records were sent to the NOAA Archive to ensure long-term stewardship of the data records. During the late 1990s and early 2000s, there was an effort to scan and digitize as many analog records as possible, to ensure better accessibility to records. A subset of the Archive's Thermograph collection was scanned during that time.
Processor
  • NCDC Climate Data Modernization Program
Processing Steps
  • Scanned as JPG and TIF
    Rationale: To digitize collection in order to make available online.
Processing Environment Paper forms captured digitally using various types of scanning equipment. All forms were scanned using a minimum of 300 dpi (standard archive quality).
Source Datasets
  • NCEI WebARTIS - CHTHRM
    • NCEI WebARTIS - CHTHRM
      Search WebARTIS--collection CHTHRM--for more detail about available data in the physical archives.
    • Description of Source: Thermographs records were scanned from physical forms contained in the Archive.
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: 2023-09-08
For questions about the information on this page, please email: ncei.info@noaa.gov