A 25‐year climatology of low‐tropospheric temperature and humidity inversions for contrasting synoptic regimes at Neumayer Station, Antarctica
Abstract A 25‐year set of daily radiosonde data was used to investigate temperature and humidity inversions at Neumayer Station, coastal Dronning Maud Land, Antarctica. For the first time, inversions were studied differentiating between different synoptic conditions and different height levels. It w...
Published in: | International Journal of Climatology |
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crwiley:10.1002/joc.7780 2024-06-02T07:58:08+00:00 A 25‐year climatology of low‐tropospheric temperature and humidity inversions for contrasting synoptic regimes at Neumayer Station, Antarctica Silva, Tiago Schlosser, Elisabeth Lehner, Manuela Austrian Science Fund Universität Innsbruck 2022 http://dx.doi.org/10.1002/joc.7780 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.7780 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.7780 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.7780 en eng Wiley http://creativecommons.org/licenses/by/4.0/ International Journal of Climatology volume 43, issue 1, page 456-479 ISSN 0899-8418 1097-0088 journal-article 2022 crwiley https://doi.org/10.1002/joc.7780 2024-05-03T11:20:40Z Abstract A 25‐year set of daily radiosonde data was used to investigate temperature and humidity inversions at Neumayer Station, coastal Dronning Maud Land, Antarctica. For the first time, inversions were studied differentiating between different synoptic conditions and different height levels. It was shown that, generally, inversions occurred on the majority (78%) of the days, with simultaneous occurrence of humidity and temperature inversions being observed on approximately two thirds of all days. Multiple inversions are common in all seasons for cyclonic and noncyclonic conditions, however, typically occur more frequently under cyclonic conditions. The seasonality of inversion occurrence and features, that is, inversion strength, depth and vertical gradients, was analysed statistically. Different formation mechanisms depending on inversion levels and prevailing weather situations are related to typical annual courses of certain inversion features. Winter maxima were found for the features that are mostly connected to the temperature close to the surface, which is mainly a result of the negative energy balance, thus influencing surface‐based inversions. At the second level, both temperature and humidity inversions are often caused by advection of comparably warm and moist air masses related to the passage of cyclones and their frontal systems. Hence, maxima in several inversion features are found in spring and fall, when cyclonic activity is strongest. Monthly mean profiles of humidity and temperature inversions reveal that elevated inversions are often obscured in average profiles due to large variations in inversion height and depth. Article in Journal/Newspaper Antarc* Antarctica Dronning Maud Land Wiley Online Library Dronning Maud Land Neumayer Neumayer Station International Journal of Climatology |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract A 25‐year set of daily radiosonde data was used to investigate temperature and humidity inversions at Neumayer Station, coastal Dronning Maud Land, Antarctica. For the first time, inversions were studied differentiating between different synoptic conditions and different height levels. It was shown that, generally, inversions occurred on the majority (78%) of the days, with simultaneous occurrence of humidity and temperature inversions being observed on approximately two thirds of all days. Multiple inversions are common in all seasons for cyclonic and noncyclonic conditions, however, typically occur more frequently under cyclonic conditions. The seasonality of inversion occurrence and features, that is, inversion strength, depth and vertical gradients, was analysed statistically. Different formation mechanisms depending on inversion levels and prevailing weather situations are related to typical annual courses of certain inversion features. Winter maxima were found for the features that are mostly connected to the temperature close to the surface, which is mainly a result of the negative energy balance, thus influencing surface‐based inversions. At the second level, both temperature and humidity inversions are often caused by advection of comparably warm and moist air masses related to the passage of cyclones and their frontal systems. Hence, maxima in several inversion features are found in spring and fall, when cyclonic activity is strongest. Monthly mean profiles of humidity and temperature inversions reveal that elevated inversions are often obscured in average profiles due to large variations in inversion height and depth. |
author2 |
Austrian Science Fund Universität Innsbruck |
format |
Article in Journal/Newspaper |
author |
Silva, Tiago Schlosser, Elisabeth Lehner, Manuela |
spellingShingle |
Silva, Tiago Schlosser, Elisabeth Lehner, Manuela A 25‐year climatology of low‐tropospheric temperature and humidity inversions for contrasting synoptic regimes at Neumayer Station, Antarctica |
author_facet |
Silva, Tiago Schlosser, Elisabeth Lehner, Manuela |
author_sort |
Silva, Tiago |
title |
A 25‐year climatology of low‐tropospheric temperature and humidity inversions for contrasting synoptic regimes at Neumayer Station, Antarctica |
title_short |
A 25‐year climatology of low‐tropospheric temperature and humidity inversions for contrasting synoptic regimes at Neumayer Station, Antarctica |
title_full |
A 25‐year climatology of low‐tropospheric temperature and humidity inversions for contrasting synoptic regimes at Neumayer Station, Antarctica |
title_fullStr |
A 25‐year climatology of low‐tropospheric temperature and humidity inversions for contrasting synoptic regimes at Neumayer Station, Antarctica |
title_full_unstemmed |
A 25‐year climatology of low‐tropospheric temperature and humidity inversions for contrasting synoptic regimes at Neumayer Station, Antarctica |
title_sort |
25‐year climatology of low‐tropospheric temperature and humidity inversions for contrasting synoptic regimes at neumayer station, antarctica |
publisher |
Wiley |
publishDate |
2022 |
url |
http://dx.doi.org/10.1002/joc.7780 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.7780 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.7780 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.7780 |
geographic |
Dronning Maud Land Neumayer Neumayer Station |
geographic_facet |
Dronning Maud Land Neumayer Neumayer Station |
genre |
Antarc* Antarctica Dronning Maud Land |
genre_facet |
Antarc* Antarctica Dronning Maud Land |
op_source |
International Journal of Climatology volume 43, issue 1, page 456-479 ISSN 0899-8418 1097-0088 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/joc.7780 |
container_title |
International Journal of Climatology |
_version_ |
1800741404475916288 |