Observations of Aerosol, Cloud, Turbulence, and Radiation Properties at the Top of the Marine Boundary Layer over the Eastern North Atlantic Ocean: The ACORES Campaign
We report on the Azores Stratocumulus Measurements of Radiation, Turbulence and Aerosols (ACORES) campaign, which took place around Graciosa and Pico Islands/Azores in July 2017. The main objective was to investigate the vertical distribution of aerosol particles, strato- cumulus microphysical and r...
Published in: | Bulletin of the American Meteorological Society |
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Online Access: | http://www.osti.gov/servlets/purl/1788052 https://www.osti.gov/biblio/1788052 https://doi.org/10.1175/BAMS-D-19-0191.1 |
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ftosti:oai:osti.gov:1788052 2023-07-30T04:05:21+02:00 Observations of Aerosol, Cloud, Turbulence, and Radiation Properties at the Top of the Marine Boundary Layer over the Eastern North Atlantic Ocean: The ACORES Campaign Siebert, Holger Luke, Edward Szodry, K.-E. Egerer, U. Wehner, B. Henning, S. Chevalier, K. Lückerath, J. Welz, O. Weinhold, K. Lauermann, F. Gottschalk, M. Ehrlich, A. Wendisch, M. Fialho, P. Roberts, G. Allwayin, N. Schum, S. Shaw, R. A. Mazzoleni, C. Mazzoleni, L. Nowak, J. L. Malinowski, S. P. Karpinska, K. Kumala, W. Czyzewska, D. Luke, E. P. Kollias, P. Wood, R. Mellado, J. P. 2022-01-26 application/pdf http://www.osti.gov/servlets/purl/1788052 https://www.osti.gov/biblio/1788052 https://doi.org/10.1175/BAMS-D-19-0191.1 unknown http://www.osti.gov/servlets/purl/1788052 https://www.osti.gov/biblio/1788052 https://doi.org/10.1175/BAMS-D-19-0191.1 doi:10.1175/BAMS-D-19-0191.1 54 ENVIRONMENTAL SCIENCES 2022 ftosti https://doi.org/10.1175/BAMS-D-19-0191.1 2023-07-11T10:04:12Z We report on the Azores Stratocumulus Measurements of Radiation, Turbulence and Aerosols (ACORES) campaign, which took place around Graciosa and Pico Islands/Azores in July 2017. The main objective was to investigate the vertical distribution of aerosol particles, strato- cumulus microphysical and radiative properties, and turbulence parameters in the eastern North Atlantic. The vertical exchange of mass, momentum, and energy between the free troposphere (FT) and the cloudy marine boundary layer (MBL) was explored over a range of scales from sub- meters to kilometers. To cover these spatial scales with appropriate measurements, helicopter- borne observations with unprecedented high resolution were realized using the Airborne Cloud Turbulence Observation System (ACTOS) and Spectral Modular Airborne Radiation Measurement System-Helicopter-Borne Observations (SMART-HELIOS) instrumental payloads. The helicopter- borne observations were combined with ground-based aerosol measurements collected at two continuously running field stations on Pico Mountain (2,225 m above sea level, in the FT), and at the Atmospheric Radiation Measurement (ARM) station on Graciosa (at sea level). First findings from the ACORES observations we are discussing in the paper are as follows: (i) we have observed a high variability of the turbulent cloud-top structure on horizontal scales below 100 m with local temperature gradients of up to 4 K over less than 1 m vertical distance, (ii) we have collected strictly collocated radiation measurements supporting the relevance of small-scale processes by revealing significant inhomogeneities in cloud-top brightness temperature to scales well below 100 m, and (iii) we have concluded that aerosol properties are completely different in the MBL and FT with often-complex stratification and frequently observed burst-like new particle formation. Other/Unknown Material North Atlantic SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Helios ENVELOPE(162.317,162.317,-77.450,-77.450) Bulletin of the American Meteorological Society 102 1 E123 E147 |
institution |
Open Polar |
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SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
54 ENVIRONMENTAL SCIENCES |
spellingShingle |
54 ENVIRONMENTAL SCIENCES Siebert, Holger Luke, Edward Szodry, K.-E. Egerer, U. Wehner, B. Henning, S. Chevalier, K. Lückerath, J. Welz, O. Weinhold, K. Lauermann, F. Gottschalk, M. Ehrlich, A. Wendisch, M. Fialho, P. Roberts, G. Allwayin, N. Schum, S. Shaw, R. A. Mazzoleni, C. Mazzoleni, L. Nowak, J. L. Malinowski, S. P. Karpinska, K. Kumala, W. Czyzewska, D. Luke, E. P. Kollias, P. Wood, R. Mellado, J. P. Observations of Aerosol, Cloud, Turbulence, and Radiation Properties at the Top of the Marine Boundary Layer over the Eastern North Atlantic Ocean: The ACORES Campaign |
topic_facet |
54 ENVIRONMENTAL SCIENCES |
description |
We report on the Azores Stratocumulus Measurements of Radiation, Turbulence and Aerosols (ACORES) campaign, which took place around Graciosa and Pico Islands/Azores in July 2017. The main objective was to investigate the vertical distribution of aerosol particles, strato- cumulus microphysical and radiative properties, and turbulence parameters in the eastern North Atlantic. The vertical exchange of mass, momentum, and energy between the free troposphere (FT) and the cloudy marine boundary layer (MBL) was explored over a range of scales from sub- meters to kilometers. To cover these spatial scales with appropriate measurements, helicopter- borne observations with unprecedented high resolution were realized using the Airborne Cloud Turbulence Observation System (ACTOS) and Spectral Modular Airborne Radiation Measurement System-Helicopter-Borne Observations (SMART-HELIOS) instrumental payloads. The helicopter- borne observations were combined with ground-based aerosol measurements collected at two continuously running field stations on Pico Mountain (2,225 m above sea level, in the FT), and at the Atmospheric Radiation Measurement (ARM) station on Graciosa (at sea level). First findings from the ACORES observations we are discussing in the paper are as follows: (i) we have observed a high variability of the turbulent cloud-top structure on horizontal scales below 100 m with local temperature gradients of up to 4 K over less than 1 m vertical distance, (ii) we have collected strictly collocated radiation measurements supporting the relevance of small-scale processes by revealing significant inhomogeneities in cloud-top brightness temperature to scales well below 100 m, and (iii) we have concluded that aerosol properties are completely different in the MBL and FT with often-complex stratification and frequently observed burst-like new particle formation. |
author |
Siebert, Holger Luke, Edward Szodry, K.-E. Egerer, U. Wehner, B. Henning, S. Chevalier, K. Lückerath, J. Welz, O. Weinhold, K. Lauermann, F. Gottschalk, M. Ehrlich, A. Wendisch, M. Fialho, P. Roberts, G. Allwayin, N. Schum, S. Shaw, R. A. Mazzoleni, C. Mazzoleni, L. Nowak, J. L. Malinowski, S. P. Karpinska, K. Kumala, W. Czyzewska, D. Luke, E. P. Kollias, P. Wood, R. Mellado, J. P. |
author_facet |
Siebert, Holger Luke, Edward Szodry, K.-E. Egerer, U. Wehner, B. Henning, S. Chevalier, K. Lückerath, J. Welz, O. Weinhold, K. Lauermann, F. Gottschalk, M. Ehrlich, A. Wendisch, M. Fialho, P. Roberts, G. Allwayin, N. Schum, S. Shaw, R. A. Mazzoleni, C. Mazzoleni, L. Nowak, J. L. Malinowski, S. P. Karpinska, K. Kumala, W. Czyzewska, D. Luke, E. P. Kollias, P. Wood, R. Mellado, J. P. |
author_sort |
Siebert, Holger |
title |
Observations of Aerosol, Cloud, Turbulence, and Radiation Properties at the Top of the Marine Boundary Layer over the Eastern North Atlantic Ocean: The ACORES Campaign |
title_short |
Observations of Aerosol, Cloud, Turbulence, and Radiation Properties at the Top of the Marine Boundary Layer over the Eastern North Atlantic Ocean: The ACORES Campaign |
title_full |
Observations of Aerosol, Cloud, Turbulence, and Radiation Properties at the Top of the Marine Boundary Layer over the Eastern North Atlantic Ocean: The ACORES Campaign |
title_fullStr |
Observations of Aerosol, Cloud, Turbulence, and Radiation Properties at the Top of the Marine Boundary Layer over the Eastern North Atlantic Ocean: The ACORES Campaign |
title_full_unstemmed |
Observations of Aerosol, Cloud, Turbulence, and Radiation Properties at the Top of the Marine Boundary Layer over the Eastern North Atlantic Ocean: The ACORES Campaign |
title_sort |
observations of aerosol, cloud, turbulence, and radiation properties at the top of the marine boundary layer over the eastern north atlantic ocean: the acores campaign |
publishDate |
2022 |
url |
http://www.osti.gov/servlets/purl/1788052 https://www.osti.gov/biblio/1788052 https://doi.org/10.1175/BAMS-D-19-0191.1 |
long_lat |
ENVELOPE(162.317,162.317,-77.450,-77.450) |
geographic |
Helios |
geographic_facet |
Helios |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
http://www.osti.gov/servlets/purl/1788052 https://www.osti.gov/biblio/1788052 https://doi.org/10.1175/BAMS-D-19-0191.1 doi:10.1175/BAMS-D-19-0191.1 |
op_doi |
https://doi.org/10.1175/BAMS-D-19-0191.1 |
container_title |
Bulletin of the American Meteorological Society |
container_volume |
102 |
container_issue |
1 |
container_start_page |
E123 |
op_container_end_page |
E147 |
_version_ |
1772817202454462464 |