Iceland Polar Vortex 2016 campaign: Winter and high-altitude dust size distributions with the balloon-borne Light Optical Aerosol Counter (LOAC)
International audience Iceland has the largest area of volcaniclastic sandy desert on Earth where dust is originating from volcanic, but also glaciogenic sediments. Total Icelandic desert areas cover 44,000 km2 which makes Iceland the largest Arctic as well as European desert. The mean frequency of...
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ftobservparis:oai:HAL:insu-03568153v1 2024-09-15T18:13:18+00:00 Iceland Polar Vortex 2016 campaign: Winter and high-altitude dust size distributions with the balloon-borne Light Optical Aerosol Counter (LOAC) Renard, Jean-Baptiste Dagsson-Waldhauserova, Pavla Olafsson, Haraldur Arnalds, Olafur Vignelles, Damien Verdier, Nicolas Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E) Observatoire des Sciences de l'Univers en région Centre (OSUC) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales Paris (CNES) Centre National d'Études Spatiales Toulouse (CNES) Vienne, Austria 2017-04-23 https://insu.hal.science/insu-03568153 https://insu.hal.science/insu-03568153/document https://insu.hal.science/insu-03568153/file/EGU2017-3320.pdf en eng HAL CCSD insu-03568153 https://insu.hal.science/insu-03568153 https://insu.hal.science/insu-03568153/document https://insu.hal.science/insu-03568153/file/EGU2017-3320.pdf BIBCODE: 2017EGUGA.19.3320R http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess 19th EGU General Assembly https://insu.hal.science/insu-03568153 19th EGU General Assembly, Apr 2017, Vienne, Austria. pp.3320 [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/conferenceObject Conference papers 2017 ftobservparis 2024-06-25T00:01:25Z International audience Iceland has the largest area of volcaniclastic sandy desert on Earth where dust is originating from volcanic, but also glaciogenic sediments. Total Icelandic desert areas cover 44,000 km2 which makes Iceland the largest Arctic as well as European desert. The mean frequency of days with dust suspension was to 135 dust days annually in 1949-2011. The annual dust deposition was calculated as 31 - 40.1 million tons yr-1 affecting the area of > 500,000 km2. About 50% of the suspended PM10 are submicron particles. Icelandic dust is of volcanic origin; it is very dark in colour and contains sharp-tipped shards with bubbles. Such properties allow even large particles to be easily transported long distances as revealed on the satellite MODIS images with dust plumes traveling over 1000 km at times. There is a need to understand better the vertical distribution of such aerosols as well as their residence time in the atmosphere, especially during occasions such as polar vortex. Four LOAC flights were performed under meteorological balloons in Iceland in January 9-13 2016 when stratospheric polar vortex occurred above Iceland. LOAC is an optical aerosol counter that uses a new optical design to retrieve the size concentrations in 19 size classes between 0.2 and 100 micrometers, and to provide an estimate of the main nature of aerosols. Vertical profile of aerosol size distribution showed the presence of volcanic dust particles up to altitudes of 8 km for two of the flights (9-10 January). The MODIS satellite images confirmed a dust plume present above the southern coast from the deposits of September 2015 glacial outburst flood (jökulhlaup) while the rest of the country was covered by snow. These deposits had been actively suspended in November and December 2015. The ground PM10 mass concentration measurements in Reykjavik showed elevated PM measurements over 100 micrograms.m-3, confirming the particle presence 250 km far from the source. The number concentration exceeded 200 particles cm-3 at ... Conference Object Iceland Archive de l'Observatoire de Paris (HAL) |
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Open Polar |
collection |
Archive de l'Observatoire de Paris (HAL) |
op_collection_id |
ftobservparis |
language |
English |
topic |
[SDU]Sciences of the Universe [physics] |
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[SDU]Sciences of the Universe [physics] Renard, Jean-Baptiste Dagsson-Waldhauserova, Pavla Olafsson, Haraldur Arnalds, Olafur Vignelles, Damien Verdier, Nicolas Iceland Polar Vortex 2016 campaign: Winter and high-altitude dust size distributions with the balloon-borne Light Optical Aerosol Counter (LOAC) |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
International audience Iceland has the largest area of volcaniclastic sandy desert on Earth where dust is originating from volcanic, but also glaciogenic sediments. Total Icelandic desert areas cover 44,000 km2 which makes Iceland the largest Arctic as well as European desert. The mean frequency of days with dust suspension was to 135 dust days annually in 1949-2011. The annual dust deposition was calculated as 31 - 40.1 million tons yr-1 affecting the area of > 500,000 km2. About 50% of the suspended PM10 are submicron particles. Icelandic dust is of volcanic origin; it is very dark in colour and contains sharp-tipped shards with bubbles. Such properties allow even large particles to be easily transported long distances as revealed on the satellite MODIS images with dust plumes traveling over 1000 km at times. There is a need to understand better the vertical distribution of such aerosols as well as their residence time in the atmosphere, especially during occasions such as polar vortex. Four LOAC flights were performed under meteorological balloons in Iceland in January 9-13 2016 when stratospheric polar vortex occurred above Iceland. LOAC is an optical aerosol counter that uses a new optical design to retrieve the size concentrations in 19 size classes between 0.2 and 100 micrometers, and to provide an estimate of the main nature of aerosols. Vertical profile of aerosol size distribution showed the presence of volcanic dust particles up to altitudes of 8 km for two of the flights (9-10 January). The MODIS satellite images confirmed a dust plume present above the southern coast from the deposits of September 2015 glacial outburst flood (jökulhlaup) while the rest of the country was covered by snow. These deposits had been actively suspended in November and December 2015. The ground PM10 mass concentration measurements in Reykjavik showed elevated PM measurements over 100 micrograms.m-3, confirming the particle presence 250 km far from the source. The number concentration exceeded 200 particles cm-3 at ... |
author2 |
Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E) Observatoire des Sciences de l'Univers en région Centre (OSUC) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales Paris (CNES) Centre National d'Études Spatiales Toulouse (CNES) |
format |
Conference Object |
author |
Renard, Jean-Baptiste Dagsson-Waldhauserova, Pavla Olafsson, Haraldur Arnalds, Olafur Vignelles, Damien Verdier, Nicolas |
author_facet |
Renard, Jean-Baptiste Dagsson-Waldhauserova, Pavla Olafsson, Haraldur Arnalds, Olafur Vignelles, Damien Verdier, Nicolas |
author_sort |
Renard, Jean-Baptiste |
title |
Iceland Polar Vortex 2016 campaign: Winter and high-altitude dust size distributions with the balloon-borne Light Optical Aerosol Counter (LOAC) |
title_short |
Iceland Polar Vortex 2016 campaign: Winter and high-altitude dust size distributions with the balloon-borne Light Optical Aerosol Counter (LOAC) |
title_full |
Iceland Polar Vortex 2016 campaign: Winter and high-altitude dust size distributions with the balloon-borne Light Optical Aerosol Counter (LOAC) |
title_fullStr |
Iceland Polar Vortex 2016 campaign: Winter and high-altitude dust size distributions with the balloon-borne Light Optical Aerosol Counter (LOAC) |
title_full_unstemmed |
Iceland Polar Vortex 2016 campaign: Winter and high-altitude dust size distributions with the balloon-borne Light Optical Aerosol Counter (LOAC) |
title_sort |
iceland polar vortex 2016 campaign: winter and high-altitude dust size distributions with the balloon-borne light optical aerosol counter (loac) |
publisher |
HAL CCSD |
publishDate |
2017 |
url |
https://insu.hal.science/insu-03568153 https://insu.hal.science/insu-03568153/document https://insu.hal.science/insu-03568153/file/EGU2017-3320.pdf |
op_coverage |
Vienne, Austria |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
19th EGU General Assembly https://insu.hal.science/insu-03568153 19th EGU General Assembly, Apr 2017, Vienne, Austria. pp.3320 |
op_relation |
insu-03568153 https://insu.hal.science/insu-03568153 https://insu.hal.science/insu-03568153/document https://insu.hal.science/insu-03568153/file/EGU2017-3320.pdf BIBCODE: 2017EGUGA.19.3320R |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
_version_ |
1810450968742985728 |