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Description

This dataset provides atmospheric carbon dioxide (CO2), methane (CH4), carbon monoxide (CO), molecular hydrogen (H2), nitrous oxide (N2O), sulfur hexafluoride (SF6), and other trace gas mole fractions (i.e., concentrations) from airborne campaigns over North America for the NASA Atmospheric Carbon and Transport - America (ACT-America) project. ACT-America's mission spanned five years and included five six-week field campaigns covering all four seasons and three regions of the central and eastern United States. Two instrumented aircraft platforms, the NASA Langley Beechcraft B-200 King Air and the NASA Goddard Space Flight Center's C-130 Hercules, were used to collect high-quality in situ measurements across a variety of continental surfaces and atmospheric conditions. The data were derived from laboratory measurements of whole air samples collected by Programmable Flask Packages (PFP) onboard the two ACT-America aircraft. Approximately 10 - 12 discrete flask samples were captured during each of the 195 flights. This dataset provides results from all five campaigns, including Summer 2016, Winter 2017, Fall 2017, Spring 2018, and Summer 2019.

Product Summary

Platforms
B-200 ,
C-130
Instruments
FLASKS
Spatial Extent

N: 49.4031 S: 27.7853 E: -72.9424 W: -105.887

Location
UNITED STATES OF AMERICA ,
MID-LATITUDE ,
WESTERN HEMISPHERE
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
2016-05-27 to 2019-07-27
Data Partner
THE OAK RIDGE NATIONAL LABORATORY (ORNL) DISTRIBUTED ACTIVE ARCHIVE CENTER (DAAC) (ORNL_DAAC)
Concept ID
C2706340483-ORNL_CLOUD
Data State
COMPLETE
Number of Files/Granules
390
Processing Level
2
Published
Updated
Science Keywords
Atmospheric Carbon Dioxide ,
Atmospheric Carbon Monoxide ,
Halocarbons And Halogens ,
Trace Gases/Trace Species ,
Methane ,
Carbon And Hydrocarbon Compounds

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Sweeney, C., Baier, B. C., Miller, J. B., Lang, P., Miller, B. R., Lehman, S., Michel, S. E., & Yang, M. M. (2018). ACT-America: L2 In Situ Atmospheric Gas Concentrations from Flasks, Eastern USA (Version 1.2). ORNL Distributed Active Archive Center. https://doi.org/10.3334/ORNLDAAC/1575 Date Accessed: 2026-05-15

Documents

Publications Citing This Dataset

Filters
Title Year Author Topic
Mid-Atlantic US observations of radiocarbon in CO2: fossil Baier, Bianca C., Miller, John B., Sweeney, Colm, Lehman, Scott J., Wolak, Chad, DiGangi, Joshua P., Choi, Yonghoon, Davis, Kenneth, Feng, Sha, Lauvaux, Thomas Atmospheric Carbon Dioxide, Methane, Atmospheric Ozone, Carbon And Hydrocarbon Compounds, Atmospheric Carbon Monoxide, Halocarbons And Halogens, Trace Gases/Trace Species, Airspeed/Ground Speed, Altitude, Vertical Profiles, Attitude Characteristics, Flight Level Winds, Wind Speed, Dew Point Temperature, Wind Direction
Quantifying European SF6 emissions from 2005 to 2021 using a large inversion ensemble Vojta, Martin, Plach, Andreas, Thompson, Rona L., Purohit, Pallav, Stanley, Kieran, O'Doherty, Simon, Young, Dickon, Pitt, Joe, Arduini, Jgor, Lan, Xin, Stohl, Andreas Population Density, Atmospheric Carbon Dioxide, Atmospheric Carbon Monoxide, Halocarbons And Halogens, Trace Gases/Trace Species, Methane, Carbon And Hydrocarbon Compounds
Atmospheric Carbon and TransportAmerica (ACTAmerica) data sets: Description, management, and delivery Wei, Y., Shrestha, R., Pal, S., Gerken, T., Feng, S., McNelis, J., Singh, D., Thornton, M. M., Boyer, A. G., Shook, M. A., Chen, G., Baier, B. C., Barkley, Z. R., Barrick, J. D., Bennett, J. R., Browell, E. V., Campbell, J. F., Campbell, L. J., Choi, Y., Collins, J., Dobler, J., Eckl, M., Fiehn, A., Fried, A., Digangi, J. P., BartonGrimley, R., Halliday, H., Klausner, T., Kooi, S., Kostinek, J., Lauvaux, T., Lin, B., McGill, M. J., Meadows, B., Miles, N. L., Nehrir, A. R., Nowak, J. B., Obland, M., ODell, C., Fao, R. M. P., Richardson, S. J., Richter, D., Roiger, A., Sweeney, C., Walega, J., Weibring, P., Williams, C. A., Yang, M. M., Zhou, Y., Davis, K. J. Primary Production, Ecosystems, Respiration Rate, Atmospheric Carbon Dioxide, Methane, Atmospheric Carbon Monoxide, Atmospheric Ozone, Carbon And Hydrocarbon Compounds, Cloud Top Height, Planetary Boundary Layer Height, Aerosol Backscatter, Nitrogen Compounds, Longwave Radiation, Shortwave Radiation, Air Temperature, Precipitation Amount, Agricultural Lands, Land Use/Land Cover Classification, Leaf Characteristics, Soil Chemistry, Soil Classification, Halocarbons And Halogens, Trace Gases/Trace Species, Water Vapor Mixing Ratio Profiles, Airspeed/Ground Speed, Altitude, Vertical Profiles, Attitude Characteristics, Flight Level Winds, Wind Speed, Dew Point Temperature, Wind Direction, Carbon, Weather Events, Flight Data Logs
Quantifying Nitrous Oxide Emissions in the US Midwest: A Top-Down Study Eckl, Maximilian, Roiger, Anke, Kostinek, Julian, Fiehn, Alina, Huntrieser, Heidi, Knote, Christoph, Barkley, Zachary R., Ogle, Stephen M., Baier, Bianca C., Sweeney, Colm, Davis, Kenneth J. Atmospheric Carbon Dioxide, Atmospheric Carbon Monoxide, Halocarbons And Halogens, Trace Gases/Trace Species, Methane, Carbon And Hydrocarbon Compounds
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