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

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Mei, Fan ^[1] ; Wang, Jian ^{[2, 3]} ; Comstock, Jennifer M. ^[1] ; Weigel, Ralf ^[4] ; Kraemer, Martina ^{[4, 5]} ; Mahnke, Christoph ^{[6, 4]} ; Shilling, John E. ^[1] ; Schneider, Johannes ^[6] ; Schulz, Christiane ^[6] ; Long, Charles N. ^[7] ; Wendisch, Manfred ^[8] ; Machado, Luiz A. T. ^[9] ; Schmid, Beat ^[1] ; Krisna, Trismono ^[8] ; Pekour, Mikhail ^[1] ; Hubbe, John ^[1] ; Giez, Andreas ^[10] ; Weinzierl, Bernadett ^[11] ; Zoeger, Martin ^[10] ; Poehlker, Mira L. ^[6] ; Schlager, Hans ^[10] ; Cecchini, Micael A. ^[12] ; Andreae, Meinrat O. ^{[13, 6]} ; Martin, Scot T. ^[14] ; de Sa, Suzane S. ^[14] ; Fan, Jiwen ^[1] ; Tomlinson, Jason ^[1] ; Springston, Stephen ^[2] ; Poeschl, Ulrich ^[6] ; Artaxo, Paulo ^[15] ; Poehlker, Christopher ^[6] ; Klimach, Thomas ^[6] ; Minikin, Andreas ^[16] ; Afchine, Armin ^[5] ; Borrmann, Stephan ^{[6, 4]}

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^[1] Pacific Northwest Natl Lab, Richland, WA 99352 - USA

^[2] Brookhaven Natl Lab, Upton, NY 11973 - USA

^[3] Washington Univ, Ctr Aerosol Sci & Engn, Dept Energy Environm & Chem Engn, St Louis, MO 63110 - USA

^[4] Johannes Gutenberg Univ Mainz, Inst Phys Atmosphere, Mainz - Germany

^[5] Res Ctr Julich, Inst Energy & Climate Res Stratosphere IEK 7 7, Julich - Germany

^[6] Max Planck Inst Chem, Mainz - Germany

^[7] NOAA, ESRL, CIRES, GMD, Boulder, CO - USA

^[8] Univ Leipzig, Leipzig - Germany

^[9] Natl Inst Space Res INPE, Sao Paulo - Brazil

^[10] Deutsch Zentrum Luft & Raumfahrt DLR, Oberpfaffenhofen - Germany

^[11] Univ Vienna, Vienna - Austria

^[12] Univ Sao Paulo, Sao Paulo - Brazil

^[13] Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 - USA

^[14] Harvard Univ, Cambridge, MA 02138 - USA

^[15] Univ Sao Paulo, Inst Fis, Sao Paulo - Brazil

^[16] DLR Oberpfaffenhofen, Flight Expt Facil, Wessling - Germany

• Tipo de documento: Artigo Científico
• Fonte: Atmospheric Measurement Techniques; v. 13, n. 2, p. 661-684, FEB 11 2020.
• Citações Web of Science: 0

Resumo

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. (AU)

• Processo FAPESP: 17/04654-6 - Estudo dos espaços de fase macro e microfísicos em tempestades: perspectivas para o nowcasting
• Beneficiário: Micael Amore Cecchini
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 13/05014-0 - GoAmazon: interação da pluma urbana de Manaus com emissões biogênicas da Floresta Amazônica
• Beneficiário: Paulo Eduardo Artaxo Netto
• Modalidade de apoio: Auxílio à Pesquisa - Programa de Pesquisa sobre Mudanças Climáticas Globais - Temático
• Processo FAPESP: 09/15235-8 - Processos de nuvens associados aos principais sistemas precipitantes no Brasil: uma contribuição à modelagem da escala de nuvens e ao GPM (Medida Global de Precipitação)
• Beneficiário: Luiz Augusto Toledo Machado
• Modalidade de apoio: Auxílio à Pesquisa - Temático