A systematic assessment of water vapor products in the Arctic: from instantaneous measurements to monthly means
Water vapor is an important component in the water and energy cycle of the Arctic. Especially in light of Arctic amplification, changes in water vapor are of high interest but are difficult to observe due to the data sparsity of the region. The ACLOUD/PASCAL campaigns performed in May/June 2017 in t...
Published in: | Atmospheric Measurement Techniques |
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ftcopernicus:oai:publications.copernicus.org:amt91753 2023-05-15T14:38:47+02:00 A systematic assessment of water vapor products in the Arctic: from instantaneous measurements to monthly means Crewell, Susanne Ebell, Kerstin Konjari, Patrick Mech, Mario Nomokonova, Tatiana Radovan, Ana Strack, David Triana-Gómez, Arantxa M. Noël, Stefan Scarlat, Raul Spreen, Gunnar Maturilli, Marion Rinke, Annette Gorodetskaya, Irina Viceto, Carolina August, Thomas Schröder, Marc 2021-07-09 application/pdf https://doi.org/10.5194/amt-14-4829-2021 https://amt.copernicus.org/articles/14/4829/2021/ eng eng doi:10.5194/amt-14-4829-2021 https://amt.copernicus.org/articles/14/4829/2021/ eISSN: 1867-8548 Text 2021 ftcopernicus https://doi.org/10.5194/amt-14-4829-2021 2021-07-12T16:22:14Z Water vapor is an important component in the water and energy cycle of the Arctic. Especially in light of Arctic amplification, changes in water vapor are of high interest but are difficult to observe due to the data sparsity of the region. The ACLOUD/PASCAL campaigns performed in May/June 2017 in the Arctic North Atlantic sector offers the opportunity to investigate the quality of various satellite and reanalysis products. Compared to reference measurements at R/V Polarstern frozen into the ice (around 82 ∘ N, 10 ∘ E) and at Ny-Ålesund, the integrated water vapor (IWV) from Infrared Atmospheric Sounding Interferometer (IASI) L2PPFv6 shows the best performance among all satellite products. Using all radiosonde stations within the region indicates some differences that might relate to different radiosonde types used. Atmospheric river events can cause rapid IWV changes by more than a factor of 2 in the Arctic. Despite the relatively dense sampling by polar-orbiting satellites, daily means can deviate by up to 50 % due to strong spatio-temporal IWV variability. For monthly mean values, this weather-induced variability cancels out, but systematic differences dominate, which particularly appear over different surface types, e.g., ocean and sea ice. In the data-sparse central Arctic north of 84 ∘ N, strong differences of 30 % in IWV monthly means between satellite products occur in the month of June, which likely result from the difficulties in considering the complex and changing surface characteristics of the melting ice within the retrieval algorithms. There is hope that the detailed surface characterization performed as part of the recently finished Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) will foster the improvement of future retrieval algorithms. Text Arctic North Atlantic Ny Ålesund Ny-Ålesund Sea ice Copernicus Publications: E-Journals Arctic Ny-Ålesund Atmospheric Measurement Techniques 14 7 4829 4856 |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
Water vapor is an important component in the water and energy cycle of the Arctic. Especially in light of Arctic amplification, changes in water vapor are of high interest but are difficult to observe due to the data sparsity of the region. The ACLOUD/PASCAL campaigns performed in May/June 2017 in the Arctic North Atlantic sector offers the opportunity to investigate the quality of various satellite and reanalysis products. Compared to reference measurements at R/V Polarstern frozen into the ice (around 82 ∘ N, 10 ∘ E) and at Ny-Ålesund, the integrated water vapor (IWV) from Infrared Atmospheric Sounding Interferometer (IASI) L2PPFv6 shows the best performance among all satellite products. Using all radiosonde stations within the region indicates some differences that might relate to different radiosonde types used. Atmospheric river events can cause rapid IWV changes by more than a factor of 2 in the Arctic. Despite the relatively dense sampling by polar-orbiting satellites, daily means can deviate by up to 50 % due to strong spatio-temporal IWV variability. For monthly mean values, this weather-induced variability cancels out, but systematic differences dominate, which particularly appear over different surface types, e.g., ocean and sea ice. In the data-sparse central Arctic north of 84 ∘ N, strong differences of 30 % in IWV monthly means between satellite products occur in the month of June, which likely result from the difficulties in considering the complex and changing surface characteristics of the melting ice within the retrieval algorithms. There is hope that the detailed surface characterization performed as part of the recently finished Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) will foster the improvement of future retrieval algorithms. |
format |
Text |
author |
Crewell, Susanne Ebell, Kerstin Konjari, Patrick Mech, Mario Nomokonova, Tatiana Radovan, Ana Strack, David Triana-Gómez, Arantxa M. Noël, Stefan Scarlat, Raul Spreen, Gunnar Maturilli, Marion Rinke, Annette Gorodetskaya, Irina Viceto, Carolina August, Thomas Schröder, Marc |
spellingShingle |
Crewell, Susanne Ebell, Kerstin Konjari, Patrick Mech, Mario Nomokonova, Tatiana Radovan, Ana Strack, David Triana-Gómez, Arantxa M. Noël, Stefan Scarlat, Raul Spreen, Gunnar Maturilli, Marion Rinke, Annette Gorodetskaya, Irina Viceto, Carolina August, Thomas Schröder, Marc A systematic assessment of water vapor products in the Arctic: from instantaneous measurements to monthly means |
author_facet |
Crewell, Susanne Ebell, Kerstin Konjari, Patrick Mech, Mario Nomokonova, Tatiana Radovan, Ana Strack, David Triana-Gómez, Arantxa M. Noël, Stefan Scarlat, Raul Spreen, Gunnar Maturilli, Marion Rinke, Annette Gorodetskaya, Irina Viceto, Carolina August, Thomas Schröder, Marc |
author_sort |
Crewell, Susanne |
title |
A systematic assessment of water vapor products in the Arctic: from instantaneous measurements to monthly means |
title_short |
A systematic assessment of water vapor products in the Arctic: from instantaneous measurements to monthly means |
title_full |
A systematic assessment of water vapor products in the Arctic: from instantaneous measurements to monthly means |
title_fullStr |
A systematic assessment of water vapor products in the Arctic: from instantaneous measurements to monthly means |
title_full_unstemmed |
A systematic assessment of water vapor products in the Arctic: from instantaneous measurements to monthly means |
title_sort |
systematic assessment of water vapor products in the arctic: from instantaneous measurements to monthly means |
publishDate |
2021 |
url |
https://doi.org/10.5194/amt-14-4829-2021 https://amt.copernicus.org/articles/14/4829/2021/ |
geographic |
Arctic Ny-Ålesund |
geographic_facet |
Arctic Ny-Ålesund |
genre |
Arctic North Atlantic Ny Ålesund Ny-Ålesund Sea ice |
genre_facet |
Arctic North Atlantic Ny Ålesund Ny-Ålesund Sea ice |
op_source |
eISSN: 1867-8548 |
op_relation |
doi:10.5194/amt-14-4829-2021 https://amt.copernicus.org/articles/14/4829/2021/ |
op_doi |
https://doi.org/10.5194/amt-14-4829-2021 |
container_title |
Atmospheric Measurement Techniques |
container_volume |
14 |
container_issue |
7 |
container_start_page |
4829 |
op_container_end_page |
4856 |
_version_ |
1766310812717154304 |