Arctic warming, moisture increase and circulation changes observed in the Ny-Ålesund homogenized radiosonde record
Radiosonde measurements obtained at the Arctic site Ny-Ålesund (78.9°N, 11.9°E), Svalbard, from 1993 to 2014 have been homogenized accounting for instrumentation discontinuities by correcting known errors in the manufacturer provided profiles. The resulting homogenized radiosonde record is provided...
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ftawi:oai:epic.awi.de:41239 2024-09-15T17:51:14+00:00 Arctic warming, moisture increase and circulation changes observed in the Ny-Ålesund homogenized radiosonde record Maturilli, Marion Kayser, Markus 2016-07-08 application/pdf https://epic.awi.de/id/eprint/41239/ https://epic.awi.de/id/eprint/41239/1/Maturilli_and_Kayser_TAAC2016.pdf https://hdl.handle.net/10013/epic.49286 https://hdl.handle.net/10013/epic.49286.d001 unknown SPRINGER WIEN https://epic.awi.de/id/eprint/41239/1/Maturilli_and_Kayser_TAAC2016.pdf https://hdl.handle.net/10013/epic.49286.d001 Maturilli, M. orcid:0000-0001-6818-7383 and Kayser, M. (2016) Arctic warming, moisture increase and circulation changes observed in the Ny-Ålesund homogenized radiosonde record , Theoretical and Applied Climatology . doi:10.1007/s00704-016-1864-0 <https://doi.org/10.1007/s00704-016-1864-0> , hdl:10013/epic.49286 EPIC3Theoretical and Applied Climatology, SPRINGER WIEN, ISSN: 0177-798X Article isiRev 2016 ftawi https://doi.org/10.1007/s00704-016-1864-0 2024-06-24T04:14:20Z Radiosonde measurements obtained at the Arctic site Ny-Ålesund (78.9°N, 11.9°E), Svalbard, from 1993 to 2014 have been homogenized accounting for instrumentation discontinuities by correcting known errors in the manufacturer provided profiles. The resulting homogenized radiosonde record is provided as supplementary material at http://doi.pangaea.de/10.1594/PANGAEA.845373. From the homogenized data record, the first Ny-Ålesund upper-air climatology of wind, temperature and humidity is presented, forming the background for the analysis of changes during the 22-year period. Particularly during the winter season, a strong increase in atmospheric temperature and humidity is observed, with a significant warming of the free troposphere in January and February up to 3 K per decade. This winter warming is even more pronounced in the boundary layer below 1 km, presumably amplified by mesoscale processes including e.g. orographic effects or the boundary layer capping inversion. Though the largest contribution to the increasing atmospheric water vapour column in winter originates from the lowermost 2 km, no increase in the contribution by specific humidity inversions is detected. Instead, we find an increase in the humidity content of the large-scale background humidity profiles. At the same time, the tropospheric flow in winter is found to occur less frequent from northerly directions and to the same amount more frequent from the South. We conclude that changes in the atmospheric circulation lead to an enhanced advection of warm and moist air from lower latitudes to the Svalbard region in the winter season, causing the warming and moistening of the atmospheric column above Ny-Ålesund, and link the observations to changes in the Arctic Oscillation. Article in Journal/Newspaper Arctic Ny Ålesund Ny-Ålesund Svalbard Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Theoretical and Applied Climatology 130 1-2 1 17 |
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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 |
Radiosonde measurements obtained at the Arctic site Ny-Ålesund (78.9°N, 11.9°E), Svalbard, from 1993 to 2014 have been homogenized accounting for instrumentation discontinuities by correcting known errors in the manufacturer provided profiles. The resulting homogenized radiosonde record is provided as supplementary material at http://doi.pangaea.de/10.1594/PANGAEA.845373. From the homogenized data record, the first Ny-Ålesund upper-air climatology of wind, temperature and humidity is presented, forming the background for the analysis of changes during the 22-year period. Particularly during the winter season, a strong increase in atmospheric temperature and humidity is observed, with a significant warming of the free troposphere in January and February up to 3 K per decade. This winter warming is even more pronounced in the boundary layer below 1 km, presumably amplified by mesoscale processes including e.g. orographic effects or the boundary layer capping inversion. Though the largest contribution to the increasing atmospheric water vapour column in winter originates from the lowermost 2 km, no increase in the contribution by specific humidity inversions is detected. Instead, we find an increase in the humidity content of the large-scale background humidity profiles. At the same time, the tropospheric flow in winter is found to occur less frequent from northerly directions and to the same amount more frequent from the South. We conclude that changes in the atmospheric circulation lead to an enhanced advection of warm and moist air from lower latitudes to the Svalbard region in the winter season, causing the warming and moistening of the atmospheric column above Ny-Ålesund, and link the observations to changes in the Arctic Oscillation. |
format |
Article in Journal/Newspaper |
author |
Maturilli, Marion Kayser, Markus |
spellingShingle |
Maturilli, Marion Kayser, Markus Arctic warming, moisture increase and circulation changes observed in the Ny-Ålesund homogenized radiosonde record |
author_facet |
Maturilli, Marion Kayser, Markus |
author_sort |
Maturilli, Marion |
title |
Arctic warming, moisture increase and circulation changes observed in the Ny-Ålesund homogenized radiosonde record |
title_short |
Arctic warming, moisture increase and circulation changes observed in the Ny-Ålesund homogenized radiosonde record |
title_full |
Arctic warming, moisture increase and circulation changes observed in the Ny-Ålesund homogenized radiosonde record |
title_fullStr |
Arctic warming, moisture increase and circulation changes observed in the Ny-Ålesund homogenized radiosonde record |
title_full_unstemmed |
Arctic warming, moisture increase and circulation changes observed in the Ny-Ålesund homogenized radiosonde record |
title_sort |
arctic warming, moisture increase and circulation changes observed in the ny-ålesund homogenized radiosonde record |
publisher |
SPRINGER WIEN |
publishDate |
2016 |
url |
https://epic.awi.de/id/eprint/41239/ https://epic.awi.de/id/eprint/41239/1/Maturilli_and_Kayser_TAAC2016.pdf https://hdl.handle.net/10013/epic.49286 https://hdl.handle.net/10013/epic.49286.d001 |
genre |
Arctic Ny Ålesund Ny-Ålesund Svalbard |
genre_facet |
Arctic Ny Ålesund Ny-Ålesund Svalbard |
op_source |
EPIC3Theoretical and Applied Climatology, SPRINGER WIEN, ISSN: 0177-798X |
op_relation |
https://epic.awi.de/id/eprint/41239/1/Maturilli_and_Kayser_TAAC2016.pdf https://hdl.handle.net/10013/epic.49286.d001 Maturilli, M. orcid:0000-0001-6818-7383 and Kayser, M. (2016) Arctic warming, moisture increase and circulation changes observed in the Ny-Ålesund homogenized radiosonde record , Theoretical and Applied Climatology . doi:10.1007/s00704-016-1864-0 <https://doi.org/10.1007/s00704-016-1864-0> , hdl:10013/epic.49286 |
op_doi |
https://doi.org/10.1007/s00704-016-1864-0 |
container_title |
Theoretical and Applied Climatology |
container_volume |
130 |
container_issue |
1-2 |
container_start_page |
1 |
op_container_end_page |
17 |
_version_ |
1810293085346725888 |