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  Comparison of aircraft measurements during GoAmazon2014/5 and ACRIDICON-CHUVA

Mei, F., Wang, J., Comstock, J. M., Weigel, R., Kraemer, M., Mahnke, C., et al. (2020). Comparison of aircraft measurements during GoAmazon2014/5 and ACRIDICON-CHUVA. Atmospheric Measurement Techniques, 13(2), 661-684. doi:10.5194/amt-13-661-2020.

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Mei, Fan1, Author
Wang, Jian1, Author
Comstock, Jennifer M.1, Author
Weigel, Ralf1, Author
Kraemer, Martina1, Author
Mahnke, Christoph1, Author
Shilling, John E.1, Author
Schneider, Johannes2, Author           
Schulz, Christiane2, Author           
Long, Charles N.1, Author
Wendisch, Manfred1, Author
Machado, Luiz A. T.1, Author
Schmid, Beat1, Author
Krisna, Trismono1, Author
Pekour, Mikhail1, Author
Hubbe, John1, Author
Giez, Andreas1, Author
Weinzierl, Bernadett1, Author
Zoeger, Martin1, Author
Pöhlker, Mira L.3, Author           
Schlager, Hans1, AuthorCecchini, Micael A.1, AuthorAndreae, Meinrat O.4, Author           Martin, Scot T.1, Authorde Sa, Suzane S.1, AuthorFan, Jiwen1, AuthorTomlinson, Jason1, AuthorSpringston, Stephen1, AuthorPöschl, Ulrich3, Author           Artaxo, Paulo1, AuthorPöhlker, Christopher3, Author           Klimach, Thomas3, Author           Minikin, Andreas1, AuthorAfchine, Armin1, AuthorBorrmann, Stephan2, Author            more..
1external, ou_persistent22              
2Particle Chemistry, Max Planck Institute for Chemistry, Max Planck Society, ou_1826291              
3Multiphase Chemistry, Max Planck Institute for Chemistry, Max Planck Society, ou_1826290              
4Biogeochemistry, Max Planck Institute for Chemistry, Max Planck Society, ou_1826286              


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 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.


 Dates: 2020
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000514113600001
DOI: 10.5194/amt-13-661-2020
 Degree: -



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Title: Atmospheric Measurement Techniques
  Abbreviation : AMT
Source Genre: Journal
Publ. Info: Göttingen : European Geosciences Union, Copernicus
Pages: - Volume / Issue: 13 (2) Sequence Number: - Start / End Page: 661 - 684 Identifier: ISSN: 1867-1381
CoNE: https://pure.mpg.de/cone/journals/resource/1867-1381