Skip to data content Skip to data search

UW CIMS (Chemical Ionization Mass Spectrometer) HNO3 Data



UW CIMS (Chemical Ionization Mass Spectrometer) HN03 Data collected from NSF/NCAR C-130 flights during the WE-CAN (Western Wildfire Experiment for Cloud Chemistry, Aerosol, Absorption and Nitrogen) field project from 24 July through 28 August 2018. This data set is in ICARTT format. Please see the header portion of the data files for details on instruments, parameters, quality assurance, quality control, contact information, and data set comments.

Data access

  • ORDER data for delivery by FTP

Additional information

Data Quality final
  • 0.1 (2018-11-19):

    RA: Preliminary field data.

  • 0.2 (2018-12-12):

    RB: Fixed a bug that caused estimated 0-40 percent discrepancies in concentrations of 9 of the 14 compounds reported in RA.

  • 0.3 (2018-12-20):

    R0: No substantial changes to data since RB with the exception of a time adjustment for RF01 (July 24, 2018). Variable names for all flights have been appended with "_UWCIMS".

  • 1.0 (2019-05-14):

    R1: several of the calibration factors and water vapor corrections have been updated.

  • 2.0 (2019-12-09):

    R2: HONO calibration has been updated. Detection limits were instituted as well (denoted as -8888).

  • 3.0 (2020-05-26):

    R3: C6H6O (phenol) calibration has been updated. Several other phenolic compounds are available upon request.

(Only the current version of the data is available to order. If you have questions about a prior version, please email us.)
Subscribe Subscribe to receive email when new or updated data is available.
Related projects
Spatial Type point
Frequency continuous
Language English
GCMD Science Keywords Expand keywords
Related links

Temporal coverage

Begin datetime 2018-07-24 00:00:00
End datetime 2018-08-28 23:59:59

Spatial coverage

Map data from IBCSO, IBCAO, and Global Topography.

Maximum (North) Latitude: 49.00, Minimum (South) Latitude: 35.00
Minimum (West) Longitude: -125.00, Maximum (East) Longitude: -100.00

Primary point of contact information

EOL Data Support <>

Additional contact information


Thornton, J. 2020. UW CIMS (Chemical Ionization Mass Spectrometer) HNO3 Data. Version 3.0. UCAR/NCAR - Earth Observing Laboratory. Accessed 18 Jun 2024.

Today's date is shown: please replace with the date of your most recent access.

Additional citation styles

The citation text below is from the DataCite Content Resolver service and may take a few seconds to load. The styles and locales are obtained from CrossCite, which also provides a citation formatter. See ReFindit for another alternative. Formatting is not perfect: please verify and edit before use. Today's date is shown: please replace with the date of your most recent access.

Style: Locale:

Ancillary information

Metadata download

Note that your browser may not display the above metadata links, but automatically save them as files in a folder such as "Downloads"