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@ARTICLE{Mei:884279,
author = {Mei, Fan and Wang, Jian and Comstock, Jennifer M. and
Weigel, Ralf and Krämer, Martina and Mahnke, Christoph and
Shilling, John E. and Schneider, Johannes and Schulz,
Christiane and Long, Charles N. and Wendisch, Manfred and
Machado, Luiz A. T. and Schmid, Beat and Krisna, Trismono
and Pekour, Mikhail and Hubbe, John and Giez, Andreas and
Weinzierl, Bernadett and Zoeger, Martin and Pöhlker, Mira
L. and Schlager, Hans and Cecchini, Micael A. and Andreae,
Meinrat O. and Martin, Scot T. and de Sá, Suzane S. and
Fan, Jiwen and Tomlinson, Jason and Springston, Stephen and
Pöschl, Ulrich and Artaxo, Paulo and Pöhlker, Christopher
and Klimach, Thomas and Minikin, Andreas and Afchine, Armin
and Borrmann, Stephan},
title = {{C}omparison of aircraft measurements during
{G}o{A}mazon2014/5 and {ACRIDICON}-{CHUVA}},
journal = {Atmospheric measurement techniques},
volume = {13},
number = {2},
issn = {1867-8548},
address = {Katlenburg-Lindau},
publisher = {Copernicus},
reportid = {FZJ-2020-03171},
pages = {661 - 684},
year = {2020},
abstract = {The indirect effect of atmospheric aerosol particles on the
Earth's radiation balance remains one of the most uncertain
components affecting climate change throughout the
industrial period. The large uncertainty is partly due to
the incomplete understanding of aerosol–cloud
interactions. One objective of the GoAmazon2014/5 and the
ACRIDICON (Aerosol, Cloud, Precipitation, and Radiation
Interactions and Dynamics of Convective Cloud Systems)-CHUVA
(Cloud Processes of the Main Precipitation Systems in
Brazil) projects was to understand the influence of
emissions from the tropical megacity of Manaus (Brazil) on
the surrounding atmospheric environment of the rainforest
and to investigate its role in the life cycle of convective
clouds. During one of the intensive observation periods
(IOPs) in the dry season from 1 September to 10 October
2014, comprehensive measurements of trace gases and aerosol
properties were carried out at several ground sites. In a
coordinated way, the advanced suites of sophisticated in
situ instruments were deployed aboard both the US Department
of Energy Gulfstream-1 (G1) aircraft and the German High
Altitude and Long-Range Research Aircraft (HALO) during
three coordinated flights on 9 and 21 September and 1
October. Here, we report on the comparison of measurements
collected by the two aircraft during these three flights.
Such comparisons are challenging but essential for assessing
the data quality from the individual platforms and
quantifying their uncertainty sources. Similar instruments
mounted on the G1 and HALO collected vertical profile
measurements of aerosol particle number concentrations and
size distribution, cloud condensation nuclei concentrations,
ozone and carbon monoxide mixing ratios, cloud droplet size
distributions, and downward solar irradiance. We find that
the above measurements from the two aircraft agreed within
the measurement uncertainties. The relative fraction of the
aerosol chemical composition measured by instruments on HALO
agreed with the corresponding G1 data, although the total
mass loadings only have a good agreement at high altitudes.
Furthermore, possible causes of the discrepancies between
measurements on the G1 and HALO are examined in this paper.
Based on these results, criteria for meaningful aircraft
measurement comparisons are discussed.},
cin = {IEK-7},
ddc = {550},
cid = {I:(DE-Juel1)IEK-7-20101013},
pnm = {244 - Composition and dynamics of the upper troposphere and
middle atmosphere (POF3-244)},
pid = {G:(DE-HGF)POF3-244},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000514113600001},
doi = {10.5194/amt-13-661-2020},
url = {https://juser.fz-juelich.de/record/884279},
}