First steps towards assessing the radiation budget in the shelf areas of the Laptev Sea by remote sensing and radiative transfer modelling
The Arctic Ocean receives considerable input of terrigenous carbon supplied by the Arctic rivers. In the context of climate change and thawing permafrost in Eastern Siberia, freshwater discharge and subsequently the riverine input may increase in the future, affecting the radiation budget in the reg...
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ftawi:oai:epic.awi.de:48419 2023-05-15T15:01:59+02:00 First steps towards assessing the radiation budget in the shelf areas of the Laptev Sea by remote sensing and radiative transfer modelling Pefanis, Vasileios Altenburg Soppa, Mariana Hellmann, Sebastian Hoelemann, Jens Janout, Markus Martynov, Fedor Heim, Birgit Rozanov, Vladimir Loza, Svetlana Dinter, Tilman Bracher, Astrid 2018-09 https://epic.awi.de/id/eprint/48419/ https://hdl.handle.net/10013/epic.f8ae3f60-e2fc-455d-a582-789941f29aad unknown Pefanis, V. orcid:0000-0002-9082-7153 , Altenburg Soppa, M. , Hellmann, S. , Hoelemann, J. orcid:0000-0001-5102-4086 , Janout, M. orcid:0000-0003-4908-2855 , Martynov, F. , Heim, B. orcid:0000-0003-2614-9391 , Rozanov, V. , Loza, S. orcid:0000-0003-2153-1954 , Dinter, T. and Bracher, A. orcid:0000-0003-3025-5517 (2018) First steps towards assessing the radiation budget in the shelf areas of the Laptev Sea by remote sensing and radiative transfer modelling , 15th International Circumpolar Remote Sensing Symposium, Potsdam, Germany, 10 September 2018 - 14 September 2018 . hdl:10013/epic.f8ae3f60-e2fc-455d-a582-789941f29aad EPIC315th International Circumpolar Remote Sensing Symposium, Potsdam, Germany, 2018-09-10-2018-09-14 Conference notRev 2018 ftawi 2021-12-24T15:44:17Z The Arctic Ocean receives considerable input of terrigenous carbon supplied by the Arctic rivers. In the context of climate change and thawing permafrost in Eastern Siberia, freshwater discharge and subsequently the riverine input may increase in the future, affecting the radiation budget in the region. Here, we examine the effect of the water optically active constituents on the radiation budget of the Laptev Sea surface waters. We use a coupled atmosphere-ocean radiative transfer model (RTM), MERIS data and in situ measurements of CDOM absorption (aCDOM), total suspended matter (TSM) and chlorophyll concentration (Chla) to simulate the radiative heating. As a first step, we evaluate RTM simulation capabilities by implementing MERIS imaging geometry and collocating every in-situ station to MERIS data to simulate the top of the atmosphere radiance. Additionally, we demonstrate the significant influence of CDOM and TSM on the energy budget of the Laptev Sea surface waters. Results show that high CDOM absorption may lead to 11.4% more absorbed energy in the surface layer (upper 2m) compared to low CDOM waters, which corresponds to an increased heating rate of about 1.3°C/day. Regarding TSM, high concentration leads to an increase of 10.6% in the absorbed energy and 1.2°C/day in the heating rate compared to low concentrations, while the impact of phytoplankton is almost negligible. As more energy is trapped in the surface, cooling occurs in the sub-surface layer (>2m). We further examine the influence of the absorbed solar energy on the melting of sea ice and the induced surface fluxes to the atmosphere. In addition, using satellite remote sensing retrievals of aCDOM, TSM, Chla and sea surface temperature data as input to the RTM simulations, we present the spatial distribution of potential radiative heating of Laptev Sea surface waters. Conference Object Arctic Arctic Ocean Climate change Ice laptev Laptev Sea permafrost Phytoplankton Sea ice Siberia Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Arctic Ocean Laptev Sea |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
The Arctic Ocean receives considerable input of terrigenous carbon supplied by the Arctic rivers. In the context of climate change and thawing permafrost in Eastern Siberia, freshwater discharge and subsequently the riverine input may increase in the future, affecting the radiation budget in the region. Here, we examine the effect of the water optically active constituents on the radiation budget of the Laptev Sea surface waters. We use a coupled atmosphere-ocean radiative transfer model (RTM), MERIS data and in situ measurements of CDOM absorption (aCDOM), total suspended matter (TSM) and chlorophyll concentration (Chla) to simulate the radiative heating. As a first step, we evaluate RTM simulation capabilities by implementing MERIS imaging geometry and collocating every in-situ station to MERIS data to simulate the top of the atmosphere radiance. Additionally, we demonstrate the significant influence of CDOM and TSM on the energy budget of the Laptev Sea surface waters. Results show that high CDOM absorption may lead to 11.4% more absorbed energy in the surface layer (upper 2m) compared to low CDOM waters, which corresponds to an increased heating rate of about 1.3°C/day. Regarding TSM, high concentration leads to an increase of 10.6% in the absorbed energy and 1.2°C/day in the heating rate compared to low concentrations, while the impact of phytoplankton is almost negligible. As more energy is trapped in the surface, cooling occurs in the sub-surface layer (>2m). We further examine the influence of the absorbed solar energy on the melting of sea ice and the induced surface fluxes to the atmosphere. In addition, using satellite remote sensing retrievals of aCDOM, TSM, Chla and sea surface temperature data as input to the RTM simulations, we present the spatial distribution of potential radiative heating of Laptev Sea surface waters. |
format |
Conference Object |
author |
Pefanis, Vasileios Altenburg Soppa, Mariana Hellmann, Sebastian Hoelemann, Jens Janout, Markus Martynov, Fedor Heim, Birgit Rozanov, Vladimir Loza, Svetlana Dinter, Tilman Bracher, Astrid |
spellingShingle |
Pefanis, Vasileios Altenburg Soppa, Mariana Hellmann, Sebastian Hoelemann, Jens Janout, Markus Martynov, Fedor Heim, Birgit Rozanov, Vladimir Loza, Svetlana Dinter, Tilman Bracher, Astrid First steps towards assessing the radiation budget in the shelf areas of the Laptev Sea by remote sensing and radiative transfer modelling |
author_facet |
Pefanis, Vasileios Altenburg Soppa, Mariana Hellmann, Sebastian Hoelemann, Jens Janout, Markus Martynov, Fedor Heim, Birgit Rozanov, Vladimir Loza, Svetlana Dinter, Tilman Bracher, Astrid |
author_sort |
Pefanis, Vasileios |
title |
First steps towards assessing the radiation budget in the shelf areas of the Laptev Sea by remote sensing and radiative transfer modelling |
title_short |
First steps towards assessing the radiation budget in the shelf areas of the Laptev Sea by remote sensing and radiative transfer modelling |
title_full |
First steps towards assessing the radiation budget in the shelf areas of the Laptev Sea by remote sensing and radiative transfer modelling |
title_fullStr |
First steps towards assessing the radiation budget in the shelf areas of the Laptev Sea by remote sensing and radiative transfer modelling |
title_full_unstemmed |
First steps towards assessing the radiation budget in the shelf areas of the Laptev Sea by remote sensing and radiative transfer modelling |
title_sort |
first steps towards assessing the radiation budget in the shelf areas of the laptev sea by remote sensing and radiative transfer modelling |
publishDate |
2018 |
url |
https://epic.awi.de/id/eprint/48419/ https://hdl.handle.net/10013/epic.f8ae3f60-e2fc-455d-a582-789941f29aad |
geographic |
Arctic Arctic Ocean Laptev Sea |
geographic_facet |
Arctic Arctic Ocean Laptev Sea |
genre |
Arctic Arctic Ocean Climate change Ice laptev Laptev Sea permafrost Phytoplankton Sea ice Siberia |
genre_facet |
Arctic Arctic Ocean Climate change Ice laptev Laptev Sea permafrost Phytoplankton Sea ice Siberia |
op_source |
EPIC315th International Circumpolar Remote Sensing Symposium, Potsdam, Germany, 2018-09-10-2018-09-14 |
op_relation |
Pefanis, V. orcid:0000-0002-9082-7153 , Altenburg Soppa, M. , Hellmann, S. , Hoelemann, J. orcid:0000-0001-5102-4086 , Janout, M. orcid:0000-0003-4908-2855 , Martynov, F. , Heim, B. orcid:0000-0003-2614-9391 , Rozanov, V. , Loza, S. orcid:0000-0003-2153-1954 , Dinter, T. and Bracher, A. orcid:0000-0003-3025-5517 (2018) First steps towards assessing the radiation budget in the shelf areas of the Laptev Sea by remote sensing and radiative transfer modelling , 15th International Circumpolar Remote Sensing Symposium, Potsdam, Germany, 10 September 2018 - 14 September 2018 . hdl:10013/epic.f8ae3f60-e2fc-455d-a582-789941f29aad |
_version_ |
1766333983994413056 |