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Description

This dataset provides the mixing ratios of reactive nitrogen and halogen species measured by the NOAA Iodide Ion Time-of-Flight Chemical Ionization Mass Spectrometer (NOAA CIMS) during airborne campaigns conducted by NASA's Atmospheric Tomography (ATom) mission for ATom-3 and ATom-4 campaigns. The NOAA CIMS uses chemical ionization mass spectrometric detection of gas phase organic and inorganic analytes via I- adduct formation. Measurements for ATom include N2O5 (dinitrogen pentoxide), ClNO2 (chloro nitrite), Cl2 (Chlorine), HCOOH (formic acid), C2H4O3S (hydroperoxymethyl thioformate), BrCl (bromine monochloride), BrCN (cyanogen bromide), and BrO (bromine monoxide). ATom deploys an extensive gas and aerosol payload on the NASA DC-8 aircraft for systematic, global-scale sampling of the atmosphere, profiling continuously from 0.2-13 km altitude. This comprehensive dataset will be used to improve the representation of chemically reactive gases and short-lived climate forcers in global models of atmospheric chemistry and climate.

Product Summary

Platforms
NASA DC-8
Instruments
CIT-ToF-CIMS
Projects
ATom
Spatial Extent

N: 82.9406 S: -86.1769 E: 180 W: -180

Location
GLOBAL
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
2017-09-28 to 2018-05-21
Data Partner
THE OAK RIDGE NATIONAL LABORATORY (ORNL) DISTRIBUTED ACTIVE ARCHIVE CENTER (DAAC) (ORNL_DAAC)
Concept ID
C2677134970-ORNL_CLOUD
Data State
COMPLETE
Number of Files/Granules
200
Processing Level
2
Published
Updated
Science Keywords
Halocarbons And Halogens ,
Air Quality ,
Nitrogen 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

Veres, P. R., Neuman, J. A., & Ryerson, T. B. (2021). ATom: L2 Measurements from NOAA ToF Chemical Ionization Mass Spectrometer, Version 2 (Version 2). ORNL Distributed Active Archive Center. https://doi.org/10.3334/ORNLDAAC/1921 Date Accessed: 2026-10-08

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Publications Citing This Dataset

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Title Authors Year Referenced Datasets
Impacts of Socio-Economic Development Scenarios on Long-Term Oceanic
  • Roozitalab, Behrooz, Hornbrook, Rebecca S., Kinnison, Douglas E., Fernandez, Rafael P., Gaubert, Benjamin, Cuevas, Carlos A., Hills, Alan J., SaizLopez, Alfonso, Emmons, Louisa K., Apel, Eric C.
Contribution of expanded marine sulfur chemistry to the seasonal variability of dimethyl sulfide oxidation products and size-resolved sulfate aerosol
  • Tashmim, Linia, Porter, William C., Chen, Qianjie, Alexander, Becky, Fite, Charles H., Holmes, Christopher D., Pierce, Jeffrey R., Croft, Betty, Ishino, Sakiko
Simulation of organics in the atmosphere: evaluation of EMACv2. 54 with the Mainz Organic Mechanism (MOM) coupled to the ORACLE (v1. 0) submodel
  • Pozzer, Andrea, Reifenberg, Simon F., Kumar, Vinod, Franco, Bruno, Kohl, Matthias, Taraborrelli, Domenico, Gromov, Sergey, Ehrhart, Sebastian, Jockel, Patrick, Sander, Rolf, Fall, Veronica, Rosanka, Simon, Karydis, Vlassis, Akritidis, Dimitris, Emmerichs, Tamara, Crippa, Monica, Guizzardi, Diego, Kaiser, Johannes W., Clarisse, Lieven, Kiendler-Scharr, Astrid, Tost, Holger, Tsimpidi, Alexandra
Rapid cloud removal of dimethyl sulfide oxidation products limits SO2
  • Novak, Gordon A., Fite, Charles H., Holmes, Christopher D., Veres, Patrick R., Neuman, J. Andrew, Faloona, Ian, Thornton, Joel A., Wolfe, Glenn M., Vermeuel, Michael P., Jernigan, Christopher M., Peischl, Jeff, Ryerson, Thomas B., Thompson, Chelsea R., Bourgeois, Ilann, Warneke, Carsten, Gkatzelis, Georgios I., Coggon, Mathew M., Sekimoto, Kanako, Bui, T. Paul, Dean-Day, Jonathan, Diskin, Glenn S., DiGangi, Joshua P., Nowak, John B., Moore, Richard H., Wiggins, Elizabeth B., Winstead, Edward L., Robinson, Claire, Thornhill, K. Lee, Sanchez, Kevin J., Hall, Samuel R., Ullmann, Kirk, Dollner, Maximilian, Weinzierl, Bernadett, Blake, Donald R., Bertram, Timothy H.
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