Overview of the Antarctic Circumnavigation Expedition: Study of Preindustrial-like Aerosols and Their Climate Effects (ACE-SPACE)
Uncertainty in radiative forcing caused by aerosol–cloud interactions is about twice as large as for CO2 and remains the least well understood anthropogenic contribution to climate change. A major cause of uncertainty is the poorly quantified state of aerosols in the pristine preindustrial atmospher...
Published in: | Bulletin of the American Meteorological Society |
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Online Access: | https://doi.org/10.1175/BAMS-D-18-0187.1 http://infoscience.epfl.ch/record/279809 |
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ftinfoscience:oai:infoscience.epfl.ch:279809 2023-05-15T13:44:31+02:00 Overview of the Antarctic Circumnavigation Expedition: Study of Preindustrial-like Aerosols and Their Climate Effects (ACE-SPACE) Baccarini, Andrea Schmale, Julia Thurnherr, Iris Henning, Silvia Efraim, Avichay Regayre, Leighton Bolas, Conor Hartmann, Markus Welti, André Lehtipalo, Katrianne Aemisegger, Franziska Tatzelt, Christian Landwehr, Sebastian Modini, Robin L. Tummon, Fiona Johnson, Jill S. Harris, Neil Schnaiter, Martin Toffoli, Alessandro Derkani, Marzieh Bukowiecki, Nicolas Stratmann, Frank Dommen, Josef Baltensperger, Urs Wernli, Heini Rosenfeld, Daniel Gysel-Beer, Martin Carslaw, Ken S. 2020-09-04T16:14:04Z https://doi.org/10.1175/BAMS-D-18-0187.1 http://infoscience.epfl.ch/record/279809 unknown doi:10.1175/BAMS-D-18-0187.1 http://infoscience.epfl.ch/record/279809 http://infoscience.epfl.ch/record/279809 Text 2020 ftinfoscience https://doi.org/10.1175/BAMS-D-18-0187.1 2023-02-13T23:01:28Z Uncertainty in radiative forcing caused by aerosol–cloud interactions is about twice as large as for CO2 and remains the least well understood anthropogenic contribution to climate change. A major cause of uncertainty is the poorly quantified state of aerosols in the pristine preindustrial atmosphere, which defines the baseline against which anthropogenic effects are calculated. The Southern Ocean is one of the few remaining near-pristine aerosol environments on Earth, but there are very few measurements to help evaluate models. The Antarctic Circumnavigation Expedition: Study of Preindustrial-like Aerosols and their Climate Effects (ACE-SPACE) took place between December 2016 and March 2017 and covered the entire Southern Ocean region (Indian, Pacific, and Atlantic Oceans; length of ship track >33,000 km) including previously unexplored areas. In situ measurements covered aerosol characteristics [e.g., chemical composition, size distributions, and cloud condensation nuclei (CCN) number concentrations], trace gases, and meteorological variables. Remote sensing observations of cloud properties, the physical and microbial ocean state, and back trajectory analyses are used to interpret the in situ data. The contribution of sea spray to CCN in the westerly wind belt can be larger than 50%. The abundance of methanesulfonic acid indicates local and regional microbial influence on CCN abundance in Antarctic coastal waters and in the open ocean. We use the in situ data to evaluate simulated CCN concentrations from a global aerosol model. The extensive, available ACE-SPACE dataset (https://zenodo.org/communities/spi-ace?page=1&size=20) provides an unprecedented opportunity to evaluate models and to reduce the uncertainty in radiative forcing associated with the natural processes of aerosol emission, formation, transport, and processing occurring over the pristine Southern Ocean. Text Antarc* Antarctic Southern Ocean EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) Antarctic Indian Pacific Southern Ocean The Antarctic Bulletin of the American Meteorological Society 100 11 2260 2283 |
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EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) |
op_collection_id |
ftinfoscience |
language |
unknown |
description |
Uncertainty in radiative forcing caused by aerosol–cloud interactions is about twice as large as for CO2 and remains the least well understood anthropogenic contribution to climate change. A major cause of uncertainty is the poorly quantified state of aerosols in the pristine preindustrial atmosphere, which defines the baseline against which anthropogenic effects are calculated. The Southern Ocean is one of the few remaining near-pristine aerosol environments on Earth, but there are very few measurements to help evaluate models. The Antarctic Circumnavigation Expedition: Study of Preindustrial-like Aerosols and their Climate Effects (ACE-SPACE) took place between December 2016 and March 2017 and covered the entire Southern Ocean region (Indian, Pacific, and Atlantic Oceans; length of ship track >33,000 km) including previously unexplored areas. In situ measurements covered aerosol characteristics [e.g., chemical composition, size distributions, and cloud condensation nuclei (CCN) number concentrations], trace gases, and meteorological variables. Remote sensing observations of cloud properties, the physical and microbial ocean state, and back trajectory analyses are used to interpret the in situ data. The contribution of sea spray to CCN in the westerly wind belt can be larger than 50%. The abundance of methanesulfonic acid indicates local and regional microbial influence on CCN abundance in Antarctic coastal waters and in the open ocean. We use the in situ data to evaluate simulated CCN concentrations from a global aerosol model. The extensive, available ACE-SPACE dataset (https://zenodo.org/communities/spi-ace?page=1&size=20) provides an unprecedented opportunity to evaluate models and to reduce the uncertainty in radiative forcing associated with the natural processes of aerosol emission, formation, transport, and processing occurring over the pristine Southern Ocean. |
format |
Text |
author |
Baccarini, Andrea Schmale, Julia Thurnherr, Iris Henning, Silvia Efraim, Avichay Regayre, Leighton Bolas, Conor Hartmann, Markus Welti, André Lehtipalo, Katrianne Aemisegger, Franziska Tatzelt, Christian Landwehr, Sebastian Modini, Robin L. Tummon, Fiona Johnson, Jill S. Harris, Neil Schnaiter, Martin Toffoli, Alessandro Derkani, Marzieh Bukowiecki, Nicolas Stratmann, Frank Dommen, Josef Baltensperger, Urs Wernli, Heini Rosenfeld, Daniel Gysel-Beer, Martin Carslaw, Ken S. |
spellingShingle |
Baccarini, Andrea Schmale, Julia Thurnherr, Iris Henning, Silvia Efraim, Avichay Regayre, Leighton Bolas, Conor Hartmann, Markus Welti, André Lehtipalo, Katrianne Aemisegger, Franziska Tatzelt, Christian Landwehr, Sebastian Modini, Robin L. Tummon, Fiona Johnson, Jill S. Harris, Neil Schnaiter, Martin Toffoli, Alessandro Derkani, Marzieh Bukowiecki, Nicolas Stratmann, Frank Dommen, Josef Baltensperger, Urs Wernli, Heini Rosenfeld, Daniel Gysel-Beer, Martin Carslaw, Ken S. Overview of the Antarctic Circumnavigation Expedition: Study of Preindustrial-like Aerosols and Their Climate Effects (ACE-SPACE) |
author_facet |
Baccarini, Andrea Schmale, Julia Thurnherr, Iris Henning, Silvia Efraim, Avichay Regayre, Leighton Bolas, Conor Hartmann, Markus Welti, André Lehtipalo, Katrianne Aemisegger, Franziska Tatzelt, Christian Landwehr, Sebastian Modini, Robin L. Tummon, Fiona Johnson, Jill S. Harris, Neil Schnaiter, Martin Toffoli, Alessandro Derkani, Marzieh Bukowiecki, Nicolas Stratmann, Frank Dommen, Josef Baltensperger, Urs Wernli, Heini Rosenfeld, Daniel Gysel-Beer, Martin Carslaw, Ken S. |
author_sort |
Baccarini, Andrea |
title |
Overview of the Antarctic Circumnavigation Expedition: Study of Preindustrial-like Aerosols and Their Climate Effects (ACE-SPACE) |
title_short |
Overview of the Antarctic Circumnavigation Expedition: Study of Preindustrial-like Aerosols and Their Climate Effects (ACE-SPACE) |
title_full |
Overview of the Antarctic Circumnavigation Expedition: Study of Preindustrial-like Aerosols and Their Climate Effects (ACE-SPACE) |
title_fullStr |
Overview of the Antarctic Circumnavigation Expedition: Study of Preindustrial-like Aerosols and Their Climate Effects (ACE-SPACE) |
title_full_unstemmed |
Overview of the Antarctic Circumnavigation Expedition: Study of Preindustrial-like Aerosols and Their Climate Effects (ACE-SPACE) |
title_sort |
overview of the antarctic circumnavigation expedition: study of preindustrial-like aerosols and their climate effects (ace-space) |
publishDate |
2020 |
url |
https://doi.org/10.1175/BAMS-D-18-0187.1 http://infoscience.epfl.ch/record/279809 |
geographic |
Antarctic Indian Pacific Southern Ocean The Antarctic |
geographic_facet |
Antarctic Indian Pacific Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
http://infoscience.epfl.ch/record/279809 |
op_relation |
doi:10.1175/BAMS-D-18-0187.1 http://infoscience.epfl.ch/record/279809 |
op_doi |
https://doi.org/10.1175/BAMS-D-18-0187.1 |
container_title |
Bulletin of the American Meteorological Society |
container_volume |
100 |
container_issue |
11 |
container_start_page |
2260 |
op_container_end_page |
2283 |
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1766202816300318720 |