Earth System Research Laboratory Halocarbons and Other Atmospheric Trace Gases Radiatively Important Trace Species (RITS) Measurements

ESRL GMD HATS RITS

browse graphicRadiatively Important Trace Species (RITS) Instrument
The Halocarbons and other Atmospheric Trace Species (HATS) group aims to quantify the atmospheric burden, and the distributions and magnitudes of sources and sinks for nitrous oxide and other halogen containing compounds. They utilize numerous types of platforms, including ground-based stations, towers, ships, aircraft, and balloons to accomplish their mission. HATS measures chlorofluorocarbons (CFCs) at measurement sites spanning the globe. CFCs are non-toxic, non-flammable chemicals that contain carbon, chlorine, and fluorine atoms. CFCs were used as solvents, refrigerants, and aerosol sprays. While inert in the troposphere, they decompose in the stratosphere to release chlorine for destructive reactions with ozone. This process eventually led to the creation of the "Ozone Hole" over the Antarctic. Monitoring the amounts of CFCs and other trace gases is important, both for tracking the growth and recovery of the Ozone Hole, and because many upward trending trace gases are potent and durable greenhouse gases.

Original in-situ sampling electron capture gas chromatographs ("RITS"): The Radiatively Important Trace Species (RITS) program consisted of five stand-alone systems that were used to make in-situ measurements at Barrow, AK (BRW), Mauna Loa, HI (MLO), American Samoa (SMO), South Pole, Antarctica (SPO), and Niwot Ridge, CO (NWR) from 1983 until 2001 when the last of the systems was retired. The RITS systems were replaced by the next-generation CATS systems that have remained operational since then. The RITS systems measured nitrous oxide (N2O), the chlorofluorocarbons CFC-12 (CCl2F2), CFC-11 (CCl3F), and CFC-113 (CCl2F-CClF2, although quality measurements of this gas have been nullified by the lack of stable references during the RITS period), methyl chloroform (CH3CCl3), and carbon tetrachloride (CCl4) once per hour.

Through the Big Earth Data Initiative (BEDI), ESRL/GMD has taken their data collection and converted files into NetCDF-4, a self-describing format.
  • Cite as: Elkins, James W.; Nance, David, Bradley Hall, and NOAA ESRL (2017): Earth System Research Laboratory Halocarbons and Other Atmospheric Trace Gases Radiatively Important Trace Species (RITS) Measurements, Version 1. [indicate subset used]. NOAA National Centers for Environmental Information. doi:10.7289/V51N7ZDK [access date].
Download Data
Distribution Formats
  • netCDF-4
    • File Compression: Yes
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 collaborator Geoffrey Dutton
Professional Research Assistant
DOC/NOAA/ESRL/GMD > Global Monitoring Division, Earth System Research Laboratory, NOAA, U.S. Department of Commerce
(303) 497-6086
geoff.dutton@noaa.gov
Time Period 1987-08-01 to 2001-08-31 (time interval: 1-hour)
Spatial Bounding Box Coordinates
N: 90.0
S: -90.0
E: 180.0
W: -180.0
Spatial Coverage Map
General Documentation
Associated Resources
Publication Dates
  • publication: 2017-11
  • creation: 1987-08-01
Edition Version 1
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 The general mission of the Halocarbons and other Atmospheric Trace Species group is to quantify the distributions and magnitudes of sources and sinks for atmospheric nitrous oxide (N2O) and halogen containing compounds.
Dataset Citation
  • Cite as: Elkins, James W.; Nance, David, Bradley Hall, and NOAA ESRL (2017): Earth System Research Laboratory Halocarbons and Other Atmospheric Trace Gases Radiatively Important Trace Species (RITS) Measurements, Version 1. [indicate subset used]. NOAA National Centers for Environmental Information. doi:10.7289/V51N7ZDK [access date].
Cited Authors
  • Elkins, James
    DOC/NOAA/ESRL/GMD > Global Monitoring Division, Earth System Research Laboratory, NOAA, U.S. Department of Commerce
  • Nance, David
    DOC/NOAA/ESRL/GMD > Global Monitoring Division, Earth System Research Laboratory, NOAA, U.S. Department of Commerce
  • Hall, Bradley
    DOC/NOAA/ESRL/GMD > Global Monitoring Division, Earth System Research Laboratory, NOAA, U.S. Department of Commerce
Principal Investigators
  • Elkins, James
    DOC/NOAA/ESRL/GMD > Global Monitoring Division, Earth System Research Laboratory, NOAA, U.S. Department of Commerce
Collaborators
  • Nance, David
    DOC/NOAA/ESRL/GMD > Global Monitoring Division, Earth System Research Laboratory, NOAA, U.S. Department of Commerce
  • Hall, Bradley
    DOC/NOAA/ESRL/GMD > Global Monitoring Division, Earth System Research Laboratory, 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 Chemistry > Nitrogen Compounds > Nitrous Oxide
  • Earth Science > Atmosphere > Atmospheric Chemistry > Halocarbons And Halogens > Chlorofluorocarbons
  • Earth Science > Atmosphere > Atmospheric Chemistry > Halocarbons And Halogens > Carbon Tetrachloride
Global Climate Observing System (GCOS) Essential Climate Variables (ECVs)
  • Atmospheric - Composition - Carbon Dioxide, Methane and other Greenhouse Gases (including N2O, CFCs, HCFCs, HFCs, SF6 and PFCs)
Keyword Thesaurus Title
  • EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > HALOCARBONS AND HALOGENS > METHYL CHLOROFORM
  • Ozone Depletion
  • Montreal Protocol
  • Halocarbons
  • Atmospheric - Composition - Nitrous Oxide and Greenhouse Gases (including CFCs, halons, and SF6)
Data Center keywords Global Change Master Directory (GCMD) Data Center Keywords
  • DOC/NOAA/ESRL/GMD > Global Monitoring Division, Earth System Research Laboratory, 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
  • AIR MONITORING STATIONS/NETWORKS
  • ESRL STATIONS > NOAA Earth Science Research Laboratory Stations
Instrument keywords Global Change Master Directory (GCMD) Instrument Keywords
  • GAS CHROMATOGRAPHS
Place keywords Global Change Master Directory (GCMD) Location Keywords
  • Continent > North America > United States Of America > Alaska
  • Continent > North America > United States Of America > Hawaii
  • Continent > North America > United States Of America > Colorado
  • Ocean > Pacific Ocean > Central Pacific Ocean > American Samoa
  • Continent > Antarctica
Project keywords Global Change Master Directory (GCMD) Project Keywords
  • ESRL > Earth System Research Laboratory (NOAA)
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 as: Elkins, James W.; Nance, David, Bradley Hall, and NOAA ESRL (2017): Earth System Research Laboratory Halocarbons and Other Atmospheric Trace Gases Radiatively Important Trace Species (RITS) Measurements, Version 1. [indicate subset used]. NOAA National Centers for Environmental Information. doi:10.7289/V51N7ZDK [access date].
  • The information contained herein is provided as a public service, with the understanding that the NOAA/ESRL Global Monitoring Divison makes no warranties, either expressed or implied, concerning the accuracy, completeness, reliability, or suitability of the information.
  • 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 Raw data were collected at field sites, transferred to NOAA where initial processing was performed. Quality control and processing were conducted on a desktop computer.
Processor
  • DOC/NOAA/ESRL/GMD > Global Monitoring Division, Earth System Research Laboratory, NOAA, U.S. Department of Commerce
Processing Steps
  • Typical data processing involves peak integration, calculating detector response and correcting for drift, applying calibrations, calculating mixing ratios. Quality control and data flagging may occur at any of these steps.
Processing Environment Initial peak integration of chromatograms was conducted on HP digital integration machines or workstations. Quality control and mixing ratios were calculated via custom software on HP workstations.
Source Datasets
  • Earth System Research Laboratory Halocarbons and Other Atmospheric Trace Gases Radiatively Important Trace Species (RITS) Measurements
    • Description of Source: ESRL GMD HATS RITS Instrument Measurements
    • Temporal extent used: 1987-08-01 to 2001-08-31
    • Spatial extent used: N:90.0 S:-90.0 E:180.0 W:-180.0
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: 2018-11-05
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