Moisture transformation in Arctic warm airmass intrusions: process attribution with stable water isotopes
Warm airmass intrusions (WAIs) from the mid-latitudes significantly impact the Arctic water budget. Here, we combine water vapor isotopes measurements from the MOSAiC expedition, with a Lagrangian-based process attribution diagnostic to track moisture origin and transformation in the central Arctic...
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Authorea, Inc.
2024
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Online Access: | http://dx.doi.org/10.22541/au.171156523.37370586/v1 |
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crwinnower:10.22541/au.171156523.37370586/v1 2024-06-02T08:00:25+00:00 Moisture transformation in Arctic warm airmass intrusions: process attribution with stable water isotopes Brunello, Camilla Francesca Gebhardt, Florian Rinke, Annette Duetsch, Marina Bucci, Silvia Meyer, Hanno Mellat, Moein Werner, Martin 2024 http://dx.doi.org/10.22541/au.171156523.37370586/v1 unknown Authorea, Inc. posted-content 2024 crwinnower https://doi.org/10.22541/au.171156523.37370586/v1 2024-05-07T14:19:29Z Warm airmass intrusions (WAIs) from the mid-latitudes significantly impact the Arctic water budget. Here, we combine water vapor isotopes measurements from the MOSAiC expedition, with a Lagrangian-based process attribution diagnostic to track moisture origin and transformation in the central Arctic Ocean during two WAIs, under contrasting sea-ice concentrations (SIC). During winter with high SIC, two moisture states emerge: the local in-Arctic moisture, for which the isotope signal is influenced by kinetic processes in ice-cloud formation, is rapidly overprinted by low-latitude moisture advected poleward during WAI. In summer under low SIC, moisture is supplied through evaporation from land and ocean, with moisture distillation via liquid-cloud formation. The isotopic composition reflects the influence of higher humidity at the evaporation sites. Given the projected increase of frequency and duration of WAIs, our study contributes to assess process changes in the Arctic water cycle. Other/Unknown Material Arctic Arctic Ocean Sea ice The Winnower Arctic Arctic Ocean |
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Open Polar |
collection |
The Winnower |
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crwinnower |
language |
unknown |
description |
Warm airmass intrusions (WAIs) from the mid-latitudes significantly impact the Arctic water budget. Here, we combine water vapor isotopes measurements from the MOSAiC expedition, with a Lagrangian-based process attribution diagnostic to track moisture origin and transformation in the central Arctic Ocean during two WAIs, under contrasting sea-ice concentrations (SIC). During winter with high SIC, two moisture states emerge: the local in-Arctic moisture, for which the isotope signal is influenced by kinetic processes in ice-cloud formation, is rapidly overprinted by low-latitude moisture advected poleward during WAI. In summer under low SIC, moisture is supplied through evaporation from land and ocean, with moisture distillation via liquid-cloud formation. The isotopic composition reflects the influence of higher humidity at the evaporation sites. Given the projected increase of frequency and duration of WAIs, our study contributes to assess process changes in the Arctic water cycle. |
format |
Other/Unknown Material |
author |
Brunello, Camilla Francesca Gebhardt, Florian Rinke, Annette Duetsch, Marina Bucci, Silvia Meyer, Hanno Mellat, Moein Werner, Martin |
spellingShingle |
Brunello, Camilla Francesca Gebhardt, Florian Rinke, Annette Duetsch, Marina Bucci, Silvia Meyer, Hanno Mellat, Moein Werner, Martin Moisture transformation in Arctic warm airmass intrusions: process attribution with stable water isotopes |
author_facet |
Brunello, Camilla Francesca Gebhardt, Florian Rinke, Annette Duetsch, Marina Bucci, Silvia Meyer, Hanno Mellat, Moein Werner, Martin |
author_sort |
Brunello, Camilla Francesca |
title |
Moisture transformation in Arctic warm airmass intrusions: process attribution with stable water isotopes |
title_short |
Moisture transformation in Arctic warm airmass intrusions: process attribution with stable water isotopes |
title_full |
Moisture transformation in Arctic warm airmass intrusions: process attribution with stable water isotopes |
title_fullStr |
Moisture transformation in Arctic warm airmass intrusions: process attribution with stable water isotopes |
title_full_unstemmed |
Moisture transformation in Arctic warm airmass intrusions: process attribution with stable water isotopes |
title_sort |
moisture transformation in arctic warm airmass intrusions: process attribution with stable water isotopes |
publisher |
Authorea, Inc. |
publishDate |
2024 |
url |
http://dx.doi.org/10.22541/au.171156523.37370586/v1 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Sea ice |
genre_facet |
Arctic Arctic Ocean Sea ice |
op_doi |
https://doi.org/10.22541/au.171156523.37370586/v1 |
_version_ |
1800744417932345344 |