A. Stickler, A. N. Grant, T. Ewen, T. F. Ross, R. S. Vose, J.
Comeaux, P. Bessemoulin, K. Jylhä, W. K. Adam, P. Jeannet, A.
Nagurny, A. M. Sterin, R. Allan, G. P. Compo, T. Griesser, and S.
Brönnimann, 2010: The Comprehensive Historical Upper-Air Network.
Bulletin of the American Meteorological Society, 91(6), 741-751
(DOI: 10.1175/2009BAMS2852.1), URL:
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.