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During ITOP the National Taiwan University DOTSTAR Astra jet released a total of 94 dropsondes in six flights over the Pacific Ocean near Taiwan during the months of August, September, and October 2010. This data set includes the high resolution (0.25 second winds and 0.5 second pressure, temperature and humidity) DOTSTAR dropsonde data set in the EOL columnar ASCII sounding format. This data set has undergone the NCAR/EOL quality control processing and includes the calculated vertical winds. See the readme for details on the QC process and data quality issues.

Data access

  • ORDER data for delivery by FTP

Additional information

Data Quality final
  • 1.0 (2011-09-09)
  • 1.2 (2016-06-24):

    This dataset has been corrected for a dry bias, the filenames have been changed, and the directory changed.

  • 2.0 (2016-06-24):

    This dataset has been corrected for a temperature dependent dry bias and the filenames have been changed.

  • 3.0 (2016-07-27):

    Version 3.0 was corrected for a temperature dependent relative humidity and dewpoint dry bias.  This is the most current version of the dataset.

(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 point
Frequency criteria
Language English
GCMD Science Keywords Expand keywords
Related links

Temporal coverage

Begin datetime 2010-08-31 10:08:00
End datetime 2010-10-17 02:00:59

Spatial coverage

Map data from IBCSO, IBCAO, and Global Topography.

Maximum (North) Latitude: 29.9126, Minimum (South) Latitude: 17.01084
Minimum (West) Longitude: 116.36204, Maximum (East) Longitude: 130.96794

Primary point of contact information

EOL Data Support <>


UCAR/NCAR - Earth Observing Laboratory. 2016. DOTSTAR ASTRA NCAR/EOL Dropsonde Data. Version 3.0. UCAR/NCAR - Earth Observing Laboratory. Accessed 28 May 2024.

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Ancillary information

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