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NACP MCI: Tower Atmospheric CO2 Concentrations, Upper Midwest Region, USA, 2007-2009

Data Set Overview

Data setNACP MCI: Tower Atmospheric CO2 Concentrations, Upper Midwest Region, USA, 2007-2009
Release date2014-01-16
ProjectNorth American Carbon Program (NACP)
Time Period2007-01-01 to 2009-12-31


This data set provides high precision and high accuracy atmospheric CO2 data from seven instrumented communication towers located in the U.S. Upper Midwest. The overall sampling period was from January 2007 through December 2009 although actual sampling dates vary within this time period for individual towers and sampling heights above ground level. The measurements were obtained in support of the North American Carbon Program (NACP) Mid-Continent Intensive (MCI) campaign. The sampling network included: the five Ring 2 towers (Centerville (Iowa), Galesville (Wisconsin), Kewanee (Illinois), Mead (Nebraska), and Round Lake (Minnesota)) deployed and operated by PSU; the Missouri Ozarks (Missouri) co-located AmeriFlux site (PSU/Oak Ridge National Laboratory (ORNL)); and the Rosemount (Minnesota) tall tower trace gas observatory (University of Minnesota, Rosemount Research and Outreach Center (RROC)). Hourly CO2 dry mole fractions (in ppm) were averaged from measurements made at different above-ground levels on the towers and are reported in Coordinated Universal Time (UTC). For the five Ring 2 sites, daily daytime average CO2 dry mole fractions were also calculated, from hourly values between 12:00-17:00 local standard time and reported in UTC. There are seven compressed (.zip) data files and one comma-separated (.csv) file with this data set. Data quality flags are provided in each file.


Data set reference document


Miles, N.L., S.J. Richardson, K.J. Davis, A.E. Andrews, T.J. Griffis, V. Bandaru, and K.P. Hosman. 2013. NACP MCI: Tower Atmospheric CO2 Concentrations, Upper Midwest Region, USA, 2007-2009. ORNL DAAC, Oak Ridge, Tennessee, USA.
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North American Carbon Program (NACP): The North American Carbon Program (NACP) is a multidisciplinary research program designed to obtain scientific understanding of North America's carbon sources and sinks and of changes in carbon stocks needed to meet societal concerns and to provide tools for decision makers.

Project data set list for North American Carbon Program (NACP).

Companion Files

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  • Kewanee_RING2_readme.pdf
  • Rosemount_readme.pdf
  • Galesville_RING2_readme.pdf
  • Round_Lake_RING2_readme.pdf
  • NACP_MCI_US_County_Names.csv
  • Missouri_Ozarks_readme.pdf
  • Mead_RING2_readme.pdf
  • Centerville_RING2_readme.pdf
  • NACP_MCI_CO2_Measurements.pdf

Data Files

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Data File (Granule)File SizeDatesLatitudeLongitude 328.3 KB 2007-05-01 - 2009-11-04 41.14N96.46W 339.9 KB 2007-05-03 - 2009-11-04 43.53N95.41W 333.1 KB 2007-06-30 - 2009-11-04 44.09N91.34W 308.6 KB 2007-04-28 - 2009-11-04 40.79N92.88W 244.0 KB 2007-01-01 - 2009-12-31 44.69N93.07W 97.7 KB 2007-01-01 - 2009-03-06 38.74N92.20W
ring2_mci_sites.csv 1.4 KB 2007-01-01 - 2009-12-31 44.69N To 38.74N89.97W To 96.46W 317.3 KB 2007-04-27 - 2009-11-04 41.28N89.97W

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Files related to this data set have been downloaded on 49 occasions since 2014-04-09, totaling 311 files.