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@ARTICLE{Witte:834183,
author = {Witte, Jacquelyn C. and Thompson, Anne M. and Smit, Herman
G.J. and Fujiwara, Masatomo and Posny, Francoise and
Coetzee, Gert J. R. and Northam, Edward T. and Johnson,
Bryan J. and Sterling, Chance W. and Mohamad, Maznorizan and
Ogino, Shin-Ya and Jordan, Allen and da Silva, Francisco R.},
title = {{F}irst reprocessing of {S}outhern {H}emisphere
{AD}ditional {OZ}onesondes ({SHADOZ}) profile records
(1998-2015): 1. {M}ethodology and evaluation},
journal = {Journal of geophysical research / Atmospheres},
volume = {122},
number = {12},
issn = {2169-897X},
address = {Hoboken, NJ},
publisher = {Wiley},
reportid = {FZJ-2017-04173},
pages = {6611–6636},
year = {2017},
abstract = {Electrochemical concentration cell ozonesonde measurements
are an important source of highly resolved vertical profiles
of ozone (O3) with long-term data records for deriving O3
trends, model development, satellite validation, and air
quality studies. Ozonesonde stations employ a range of
operational and data processing procedures, metadata
reporting, and instrument changes that have resulted in
inhomogeneities within individual station data records. A
major milestone is the first reprocessing of seven Southern
Hemisphere ADditional OZonesondes (SHADOZ) station
ozonesonde records to account for errors and biases in
operating/processing procedures. Ascension Island, Hanoi,
Irene, Kuala Lumpur, La Réunion, Natal, and Watukosek
station records all show an overall increase in O3 after
reprocessing. Watukosek shows the largest increase of 9.0 ±
2.1 Dobson Units (DU) in total column O3; Irene and Hanoi
show a 5.5 ± 2.5 DU increase, while remaining sites show
statistically insignificant enhancements. Negligible to
modest O3 enhancements are observed after reprocessing in
the troposphere (up to $8\%)$ and stratosphere (up to
$6\%),$ except at La Réunion for which the application of
background currents reduces tropospheric O3 (−2.1 ± 1.3
DU). Inhomogeneities due to ozonesonde/solution-type changes
at Ascension, Natal, and La Réunion are resolved with the
application of transfer functions. Comparisons with EP-TOMS,
Aura's Ozone Monitoring Instrument and Microwave Limb
Sounder (MLS) satellite O3 overpasses show an overall
improvement in agreement after reprocessing. Most
reprocessed data sets show a significant reduction in biases
with MLS at the ozone maximum region (50–10 hPa). Changes
in radiosonde/ozonesonde system and nonstandard solution
types can account for remaining discrepancies observed at
several sites when compared to satellites.},
cin = {IEK-8},
ddc = {550},
cid = {I:(DE-Juel1)IEK-8-20101013},
pnm = {243 - Tropospheric trace substances and their
transformation processes (POF3-243)},
pid = {G:(DE-HGF)POF3-243},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000405514000027},
doi = {10.1002/2016JD026403},
url = {https://juser.fz-juelich.de/record/834183},
}