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Observations of carbon dioxide (CO2), methane (CH4), and carbon monoxide (CO) mole fractions from the NIST Northeast Corridor urban testbed

Published by National Institute of Standards and Technology | National Institute of Standards and Technology | Catalog Last Checked: September 10, 2026 at 05:52 PM | Dataset Last Updated: May 03, 2023
NOTE: please see the latest (March 2025) update at https://doi.org/10.18434/mds2-3765 . This archive is from May 2023. See Updates document for specific major and minor changes. Here we provide hourly observations of carbon dioxide (CO2), methane (CH4), and carbon monoxide (CO) from tower- based sites in the NIST Northeast Corridor network. Each *.tgz (tar/gzip) archive contains data files for a given site location, nam ed by its 3-letter code (see NEC_sites.csv for codes and locations). To extract on a unix platform, use "tar -xvzf ". Data files within the .tgz archives are comma delimited (CSV); data files within the _NC.tgz archives are in NetCDF format. Site locations, heights, and other information are in a separate ascii (CSV) file (NEC_sites.csv), and also within each data file. D ata in this archive is reported for the years 2015-2022. An ASCII Readme file (NEC_Readme_05052023) is also posted, along with an Up dates_05052023.txt file that includes additional information on updates. Note about calibrations: CO2 data are reported on the NOAA/ WMO X2007 calibration scale. CH4 data are reported on the NOAA/WMO X2004A calibration scale; CO data, where available, are reported on the NOAA/WMO X2014 scale. This archive, with CO2 data on the X2007 scale, will no longer be updated. A full revision of all the d ata on the NOAA/WMO X2019 scale for CO2 is forthcoming, and will be linked here; that archive will maintain its own record and DOI, include CH4 and CO, and will be continually updated. This data is being freely distributed for research, academic and related non-co mmercial purposes consistent with NIST's mandate to further the science and the promulgation of appropriate standards. Current updat e: May 5, 2023.

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Complete Metadata
@type dcat:Dataset
accessLevel public
bureauCode 
[
  "006:55"
]
contactPoint 
{
  "fn": "Anna Karion",
  "hasEmail": "mailto:anna.karion@nist.gov"
}
description NOTE: please see the latest (March 2025) update at https://doi.org/10.18434/mds2-3765 . This archive is from May 2023. See Updates document for specific major and minor changes. Here we provide hourly observations of carbon dioxide (CO2), methane (CH4), and carbon monoxide (CO) from tower- based sites in the NIST Northeast Corridor network. Each *.tgz (tar/gzip) archive contains data files for a given site location, nam ed by its 3-letter code (see NEC_sites.csv for codes and locations). To extract on a unix platform, use "tar -xvzf <filename>". Data files within the <site>.tgz archives are comma delimited (CSV); data files within the <site>_NC.tgz archives are in NetCDF format. Site locations, heights, and other information are in a separate ascii (CSV) file (NEC_sites.csv), and also within each data file. D ata in this archive is reported for the years 2015-2022. An ASCII Readme file (NEC_Readme_05052023) is also posted, along with an Up dates_05052023.txt file that includes additional information on updates. Note about calibrations: CO2 data are reported on the NOAA/ WMO X2007 calibration scale. CH4 data are reported on the NOAA/WMO X2004A calibration scale; CO data, where available, are reported on the NOAA/WMO X2014 scale. This archive, with CO2 data on the X2007 scale, will no longer be updated. A full revision of all the d ata on the NOAA/WMO X2019 scale for CO2 is forthcoming, and will be linked here; that archive will maintain its own record and DOI, include CH4 and CO, and will be continually updated. This data is being freely distributed for research, academic and related non-co mmercial purposes consistent with NIST's mandate to further the science and the promulgation of appropriate standards. Current updat e: May 5, 2023.
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identifier ark:/88434/mds2-3012
issued 2023-05-08
keyword 
[
  "GHG concentration measurements",
  "Greenhouse gas measurements and models",
  "emission inventories",
  "urban greenhouse gas domes"
]
landingPage https://data.nist.gov/od/id/mds2-3012
language 
[
  "en"
]
license https://www.nist.gov/open/license
modified 2023-05-03 00:00:00
programCode 
[
  "006:047"
]
publisher 
{
  "name": "National Institute of Standards and Technology",
  "@type": "org:Organization"
}
references 
[
  "https://doi.org/10.5194/essd-12-699-2020"
]
spatial United States
temporal 2015-01-01/2022-12-31
theme 
[
  "Environment:Greenhouse gas measurements"
]
title Observations of carbon dioxide (CO2), methane (CH4), and carbon monoxide (CO) mole fractions from the NIST Northeast Corridor urban testbed

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