Long-term observations of aerosol optical depth and their relation to in-situ aerosol properties in the Svalbard region (LOAD-RIS)
This is chapter 2 of the State of Environmental Science in Svalbard (SESS) report 2022. Aerosols are an important constituent of the atmosphere both influencing the climate system and contributing to increasing pollution of the Arctic. At the same time, their adequate monitoring is a big challenge,...
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ftzenodo:oai:zenodo.org:7376140 2024-09-15T17:59:58+00:00 Long-term observations of aerosol optical depth and their relation to in-situ aerosol properties in the Svalbard region (LOAD-RIS) Hansen, Georg Kouremeti, Natalia Gilardoni, Stefania Stebel, Kerstin Evangeliou, Nikolaos Ritter, Christoph Zielinski, Tymon Herrero, Sara Kazadzis, Stelios Mateos, David Mazzola, Mauro Pakszys, Paulina Eleftheriadis, Konstantinos 2023-01-23 https://doi.org/10.5281/zenodo.7376140 eng eng Svalbard Integrated Arctic Earth Observing System https://zenodo.org/communities/sios https://doi.org/10.5281/zenodo.7376139 https://doi.org/10.5281/zenodo.7376140 oai:zenodo.org:7376140 info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode Aerosols Arctic haze biomass burning black carbon optical thickness info:eu-repo/semantics/report 2023 ftzenodo https://doi.org/10.5281/zenodo.737614010.5281/zenodo.7376139 2024-07-25T10:17:31Z This is chapter 2 of the State of Environmental Science in Svalbard (SESS) report 2022. Aerosols are an important constituent of the atmosphere both influencing the climate system and contributing to increasing pollution of the Arctic. At the same time, their adequate monitoring is a big challenge, as instruments on the ground only can sample aerosols in the lowermost atmosphere. For this reason, these measurements are complemented with observations of aerosol optical depth (AOD) which quantify the total amount of aerosols throughout the atmosphere from the attenuation of direct sunlight (and moonlight). This procedure requires extremely careful instrument calibration and removal of cloud contaminated data. In Svalbard, such measurements have been performed by several research groups with different instruments, mostly in Ny-Ålesund and in Hornsund, but also on research vessels offshore. In the framework of the SSF Strategic Grant project ReHearsol, all AOD data from the Svalbard region since 2002 have been collected and made available to the SIOS research community. They indicate that number and intensity of Arctic haze episodes occurring in late winter and spring have decreased consistently and significantly in the last 20 years, while pollution events in summer/early autumn, caused by boreal biomass burning, are on the rise, though not as consistently. Comparison between in-situ measurements at Gruvebadet Atmosphere Laboratory in Ny-Ålesund and AOD measurements indicate that most (more than 65%) of the episodes with high aerosol load are not captured by surface measurements. This finding does not change when one includes in-situ measurements at Zeppelin Observatory (475 m a.s.l.). Studying extensive high-AOD episodes such as those in summer 2019 requires a multi-tool approach including in-situ and remote-sensing measurements combined with model tools. Report black carbon Hornsund Ny Ålesund Ny-Ålesund Svalbard Zenodo |
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Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
English |
topic |
Aerosols Arctic haze biomass burning black carbon optical thickness |
spellingShingle |
Aerosols Arctic haze biomass burning black carbon optical thickness Hansen, Georg Kouremeti, Natalia Gilardoni, Stefania Stebel, Kerstin Evangeliou, Nikolaos Ritter, Christoph Zielinski, Tymon Herrero, Sara Kazadzis, Stelios Mateos, David Mazzola, Mauro Pakszys, Paulina Eleftheriadis, Konstantinos Long-term observations of aerosol optical depth and their relation to in-situ aerosol properties in the Svalbard region (LOAD-RIS) |
topic_facet |
Aerosols Arctic haze biomass burning black carbon optical thickness |
description |
This is chapter 2 of the State of Environmental Science in Svalbard (SESS) report 2022. Aerosols are an important constituent of the atmosphere both influencing the climate system and contributing to increasing pollution of the Arctic. At the same time, their adequate monitoring is a big challenge, as instruments on the ground only can sample aerosols in the lowermost atmosphere. For this reason, these measurements are complemented with observations of aerosol optical depth (AOD) which quantify the total amount of aerosols throughout the atmosphere from the attenuation of direct sunlight (and moonlight). This procedure requires extremely careful instrument calibration and removal of cloud contaminated data. In Svalbard, such measurements have been performed by several research groups with different instruments, mostly in Ny-Ålesund and in Hornsund, but also on research vessels offshore. In the framework of the SSF Strategic Grant project ReHearsol, all AOD data from the Svalbard region since 2002 have been collected and made available to the SIOS research community. They indicate that number and intensity of Arctic haze episodes occurring in late winter and spring have decreased consistently and significantly in the last 20 years, while pollution events in summer/early autumn, caused by boreal biomass burning, are on the rise, though not as consistently. Comparison between in-situ measurements at Gruvebadet Atmosphere Laboratory in Ny-Ålesund and AOD measurements indicate that most (more than 65%) of the episodes with high aerosol load are not captured by surface measurements. This finding does not change when one includes in-situ measurements at Zeppelin Observatory (475 m a.s.l.). Studying extensive high-AOD episodes such as those in summer 2019 requires a multi-tool approach including in-situ and remote-sensing measurements combined with model tools. |
format |
Report |
author |
Hansen, Georg Kouremeti, Natalia Gilardoni, Stefania Stebel, Kerstin Evangeliou, Nikolaos Ritter, Christoph Zielinski, Tymon Herrero, Sara Kazadzis, Stelios Mateos, David Mazzola, Mauro Pakszys, Paulina Eleftheriadis, Konstantinos |
author_facet |
Hansen, Georg Kouremeti, Natalia Gilardoni, Stefania Stebel, Kerstin Evangeliou, Nikolaos Ritter, Christoph Zielinski, Tymon Herrero, Sara Kazadzis, Stelios Mateos, David Mazzola, Mauro Pakszys, Paulina Eleftheriadis, Konstantinos |
author_sort |
Hansen, Georg |
title |
Long-term observations of aerosol optical depth and their relation to in-situ aerosol properties in the Svalbard region (LOAD-RIS) |
title_short |
Long-term observations of aerosol optical depth and their relation to in-situ aerosol properties in the Svalbard region (LOAD-RIS) |
title_full |
Long-term observations of aerosol optical depth and their relation to in-situ aerosol properties in the Svalbard region (LOAD-RIS) |
title_fullStr |
Long-term observations of aerosol optical depth and their relation to in-situ aerosol properties in the Svalbard region (LOAD-RIS) |
title_full_unstemmed |
Long-term observations of aerosol optical depth and their relation to in-situ aerosol properties in the Svalbard region (LOAD-RIS) |
title_sort |
long-term observations of aerosol optical depth and their relation to in-situ aerosol properties in the svalbard region (load-ris) |
publisher |
Svalbard Integrated Arctic Earth Observing System |
publishDate |
2023 |
url |
https://doi.org/10.5281/zenodo.7376140 |
genre |
black carbon Hornsund Ny Ålesund Ny-Ålesund Svalbard |
genre_facet |
black carbon Hornsund Ny Ålesund Ny-Ålesund Svalbard |
op_relation |
https://zenodo.org/communities/sios https://doi.org/10.5281/zenodo.7376139 https://doi.org/10.5281/zenodo.7376140 oai:zenodo.org:7376140 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.737614010.5281/zenodo.7376139 |
_version_ |
1810437086727110656 |