Comparison of aircraft measurements during GoAmazon2014/5 and ACRIDICON-CHUVA
<p>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 interaction...
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Copernicus Publications
2020-02-01
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Series: | Atmospheric Measurement Techniques |
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doaj-20932e5e3a6b4546a18d9d9db6d44ff5 |
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record_format |
Article |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
F. Mei J. Wang J. Wang J. M. Comstock R. Weigel M. Krämer M. Krämer C. Mahnke C. Mahnke J. E. Shilling J. Schneider C. Schulz C. N. Long M. Wendisch L. A. T. Machado B. Schmid T. Krisna M. Pekour J. Hubbe A. Giez B. Weinzierl M. Zoeger M. L. Pöhlker H. Schlager M. A. Cecchini M. O. Andreae M. O. Andreae S. T. Martin S. S. de Sá J. Fan J. Tomlinson S. Springston U. Pöschl P. Artaxo C. Pöhlker T. Klimach A. Minikin A. Afchine S. Borrmann S. Borrmann |
spellingShingle |
F. Mei J. Wang J. Wang J. M. Comstock R. Weigel M. Krämer M. Krämer C. Mahnke C. Mahnke J. E. Shilling J. Schneider C. Schulz C. N. Long M. Wendisch L. A. T. Machado B. Schmid T. Krisna M. Pekour J. Hubbe A. Giez B. Weinzierl M. Zoeger M. L. Pöhlker H. Schlager M. A. Cecchini M. O. Andreae M. O. Andreae S. T. Martin S. S. de Sá J. Fan J. Tomlinson S. Springston U. Pöschl P. Artaxo C. Pöhlker T. Klimach A. Minikin A. Afchine S. Borrmann S. Borrmann Comparison of aircraft measurements during GoAmazon2014/5 and ACRIDICON-CHUVA Atmospheric Measurement Techniques |
author_facet |
F. Mei J. Wang J. Wang J. M. Comstock R. Weigel M. Krämer M. Krämer C. Mahnke C. Mahnke J. E. Shilling J. Schneider C. Schulz C. N. Long M. Wendisch L. A. T. Machado B. Schmid T. Krisna M. Pekour J. Hubbe A. Giez B. Weinzierl M. Zoeger M. L. Pöhlker H. Schlager M. A. Cecchini M. O. Andreae M. O. Andreae S. T. Martin S. S. de Sá J. Fan J. Tomlinson S. Springston U. Pöschl P. Artaxo C. Pöhlker T. Klimach A. Minikin A. Afchine S. Borrmann S. Borrmann |
author_sort |
F. Mei |
title |
Comparison of aircraft measurements during GoAmazon2014/5 and ACRIDICON-CHUVA |
title_short |
Comparison of aircraft measurements during GoAmazon2014/5 and ACRIDICON-CHUVA |
title_full |
Comparison of aircraft measurements during GoAmazon2014/5 and ACRIDICON-CHUVA |
title_fullStr |
Comparison of aircraft measurements during GoAmazon2014/5 and ACRIDICON-CHUVA |
title_full_unstemmed |
Comparison of aircraft measurements during GoAmazon2014/5 and ACRIDICON-CHUVA |
title_sort |
comparison of aircraft measurements during goamazon2014/5 and acridicon-chuva |
publisher |
Copernicus Publications |
series |
Atmospheric Measurement Techniques |
issn |
1867-1381 1867-8548 |
publishDate |
2020-02-01 |
description |
<p>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<span id="page662"/> 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.</p> |
url |
https://www.atmos-meas-tech.net/13/661/2020/amt-13-661-2020.pdf |
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doaj-20932e5e3a6b4546a18d9d9db6d44ff52020-11-25T01:19:52ZengCopernicus PublicationsAtmospheric Measurement Techniques1867-13811867-85482020-02-011366168410.5194/amt-13-661-2020Comparison of aircraft measurements during GoAmazon2014/5 and ACRIDICON-CHUVAF. Mei0J. Wang1J. Wang2J. M. Comstock3R. Weigel4M. Krämer5M. Krämer6C. Mahnke7C. Mahnke8J. E. Shilling9J. Schneider10C. Schulz11C. N. Long12M. Wendisch13L. A. T. Machado14B. Schmid15T. Krisna16M. Pekour17J. Hubbe18A. Giez19B. Weinzierl20M. Zoeger21M. L. Pöhlker22H. Schlager23M. A. Cecchini24M. O. Andreae25M. O. Andreae26S. T. Martin27S. S. de Sá28J. Fan29J. Tomlinson30S. Springston31U. Pöschl32P. Artaxo33C. Pöhlker34T. Klimach35A. Minikin36A. Afchine37S. Borrmann38S. Borrmann39Pacific Northwest National Laboratory, Richland, WA, USABrookhaven National Laboratory, Upton, NY, USACenter for Aerosol Science and Engineering, Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, St. Louis, MO, USAPacific Northwest National Laboratory, Richland, WA, USAInstitute for Physics of the Atmosphere, Johannes Gutenberg University, Mainz, GermanyInstitute for Physics of the Atmosphere, Johannes Gutenberg University, Mainz, GermanyResearch Centre Jülich, Institute for Energy and Climate Research 7: Stratosphere (IEK-7), Jülich, GermanyInstitute for Physics of the Atmosphere, Johannes Gutenberg University, Mainz, GermanyMax Planck Institute for Chemistry, Mainz, GermanyPacific Northwest National Laboratory, Richland, WA, USAMax Planck Institute for Chemistry, Mainz, GermanyMax Planck Institute for Chemistry, Mainz, GermanyNOAA ESRL GMD/CIRES, Boulder, CO, USAUniversity of Leipzig, Leipzig, GermanyNational Institute for Space Research (INPE), São Paulo, BrazilPacific Northwest National Laboratory, Richland, WA, USAUniversity of Leipzig, Leipzig, GermanyPacific Northwest National Laboratory, Richland, WA, USAPacific Northwest National Laboratory, Richland, WA, USADeutsches Zentrum für Luft- und Raumfahrt (DLR), Oberpfaffenhofen, GermanyUniversity of Vienna, Vienna, AustriaDeutsches Zentrum für Luft- und Raumfahrt (DLR), Oberpfaffenhofen, GermanyMax Planck Institute for Chemistry, Mainz, GermanyDeutsches Zentrum für Luft- und Raumfahrt (DLR), Oberpfaffenhofen, GermanyUniversity of São Paulo (USP), São Paulo, BrazilMax Planck Institute for Chemistry, Mainz, GermanyScripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USAHarvard University, Cambridge, MA, USAHarvard University, Cambridge, MA, USAPacific Northwest National Laboratory, Richland, WA, USAPacific Northwest National Laboratory, Richland, WA, USABrookhaven National Laboratory, Upton, NY, USAMax Planck Institute for Chemistry, Mainz, GermanyInstituto de Física, Universidade de São Paulo, São Paulo, BrazilMax Planck Institute for Chemistry, Mainz, GermanyMax Planck Institute for Chemistry, Mainz, GermanyDLR Oberpfaffenhofen, Flight Experiments Facility, Wessling, GermanyResearch Centre Jülich, Institute for Energy and Climate Research 7: Stratosphere (IEK-7), Jülich, GermanyInstitute for Physics of the Atmosphere, Johannes Gutenberg University, Mainz, GermanyMax Planck Institute for Chemistry, Mainz, Germany<p>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<span id="page662"/> 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.</p>https://www.atmos-meas-tech.net/13/661/2020/amt-13-661-2020.pdf |