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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 NCAR Research Aviation Facility (RAF) Gulfstream V (HIAPER) aircraft (Tail Number N677F) during the "Stratosphere- Troposphere Analyses of Regional Transport 2008 " (START08) project. This data set contains merged Low-Rate (LRT, 1 sps) production, DGPS, and CO data. This data also contains updates to dewpoint measurement and dependent variables; 2D-C concentrations, histograms and related variables; solar zenith angle variables. The files are in netCDF format. This dataset was updated March 25, 2010.

Data access

Additional information

Data Quality final
  • 0.8 (2008-12-11)
  • 0.9 (2009-04-30)
  • 1.0 (2011-05-17)
  • 2.0 (2019-01-25):

    This version uses exact circle fitting for measuring particle size and limits accepted particles to center-in images.

    In this process, variables with 1DC in the name have been replaced with 2DC.

(Only the current version of the data is available to order. If you have questions about a prior version, please email us.)
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Related projects
Spatial Type raster
Frequency 1 second
Language English
GCMD Science Keywords Expand keywords
Related links

Temporal coverage

Begin datetime 2008-04-18 00:00:00
End datetime 2008-06-27 23:59:59

Spatial coverage

Map data from IBCSO, IBCAO, and Global Topography.

Maximum (North) Latitude: 63.00, Minimum (South) Latitude: 25.00
Minimum (West) Longitude: -118.00, Maximum (East) Longitude: -86.00

Primary point of contact information

EOL Data Support <>

Additional contact information


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 09 Jul 2020.

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