The Comprehensive Historical Upper Air Network

The Comprehensive Historical Upper-Air Network (CHUAN) represents a global, historical upper-air dataset that has been derived from heterogeneous data available from various sources, including newly digitized data. The data have been derived from radiosondes, pilot balloons, registering balloons and kites and has been subjected to a systematic quality assessment. CHUAN has focused on collecting data for pre-1957 .

This product is the "V1.7" corrected (quality controlled) data with no bias or radiation correction applied ("CDC" in CHUAN documentation). There are other products available in "V1.7", like corrected data with bias and radiation corrections and the raw (non quality controlled) soundings, along with others, that are not available at this time.

A new version is expected to be available in mid 2014.

To Access Resource:

Questions? Email Resource Support Contact:

  • Doug Schuster
    UCAR/NCAR - Research Data Archive

Temporal Range

  • Begin:  1904-01-01
    End:  2007-03-27


Resource Type dataset
Temporal Range Begin 1904-01-01
Temporal Range End 2007-03-27
Temporal Resolution N/A
Bounding Box North Lat N/A
Bounding Box South Lat N/A
Bounding Box West Long N/A
Bounding Box East Long N/A
Spatial Representation N/A
Spatial Resolution N/A
Related Links

Related Resource #1 : Comprehensive Historical Upper-Air Network Data from the University of Bern

Additional Information N/A
Resource Format ASCII
Standardized Resource Format N/A
Asset Size 17747 MB
Legal Constraints

Use of this dataset is subject to UCAR's Terms of Use, except that commercial use is generally not prohibited.

Access Constraints Registration on the RDA web site is a requirement for access to the data.
Software Implementation Language N/A

Resource Support Name Doug Schuster
Resource Support Email
Resource Support Organization UCAR/NCAR - Research Data Archive
Distributor NCAR Research Data Archive
Metadata Contact Name N/A
Metadata Contact Email
Metadata Contact Organization NCAR Research Data Archive

Author Bronnimann, Stefan
Stickler, Alexander
Publisher Research Data Archive at the National Center for Atmospheric Research, Computational and Information Systems Laboratory
Publication Date 2013-11-21
Digital Object Identifier (DOI)
Alternate Identifier ds352.0
Resource Version N/A
Topic Category climatologyMeteorologyAtmosphere
Progress completed
Metadata Date 2019-03-04T15:05:02-07:00
Metadata Record Identifier edu.ucar.rda::ds352.0
Metadata Language eng; USA
Suggested Citation Bronnimann, Stefan, Stickler, Alexander. (2013). The Comprehensive Historical Upper Air Network. Research Data Archive at the National Center for Atmospheric Research, Computational and Information Systems Laboratory. Accessed 07 June 2023.

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