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Low Rate (LRT - 1 sps) Navigation, State Parameter, and Microphysics Flight-Level Data


This data set includes airborne measurements obtained from the NSF/NCAR C-130 aircraft (Tail Number N130AR) during the Front Range Air Pollution and Photochemistry Experiment (FRAPPE) project. This dataset contains low rate navigation, state parameter, and microphysics flight-level data in netCDF format.

Data access

  • ORDER data for delivery by FTP

Additional information

Data Quality final
  • 1.0 (2015-02-24)
  • 1.1 (2015-05-28):

    These files are exactly the same as version 1.0 with the addition of two Terrain Height vars: ALTG_SRTM,  SFC_SRTM.

  • 2.0 (2019-06-17):

    Removal of variables from redundant sensors that are not typically released as a part of the final dataset.

    Updated PCORS resulting in pressures different on the order of 1 mbar and corrected wind speed components different on the order of 0.5 to 1 m/s, relative to previous versions.

    ALTG_SRTM and SFC_SRTM remain in version 2.0 as they were in version 1.1.

    Geo-potential height was added and DVALUE uses that instead of GPS altitude.

(Only the current version of the data is available to order. If you have questions about a prior version, please email us.)
Metadata download

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Related projects
Spatial Type point
Frequency 1 second
Language English
Related links

Temporal coverage

Begin datetime 2014-07-26 15:39:00
End datetime 2014-08-19 02:42:59

Spatial coverage

Map data from IBCSO, IBCAO, and Global Topography.

Maximum (North) Latitude: 43.00, Minimum (South) Latitude: 35.00
Minimum (West) Longitude: -111.00, Maximum (East) Longitude: -99.00

Primary point of contact information

EOL Data Support <>


Example citation following ESIP guidelines:

UCAR/NCAR - Earth Observing Laboratory. 2019. Low Rate (LRT - 1 sps) Navigation, State Parameter, and Microphysics Flight-Level Data. Version 2.0. UCAR/NCAR - Earth Observing Laboratory. Accessed 22 Oct 2019.

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

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