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...

Full description

Bibliographic Details
Published in:Theoretical and Applied Climatology
Main Authors: Maturilli, Marion, Kayser, Markus
Format: Article in Journal/Newspaper
Language:unknown
Published: SPRINGER WIEN 2016
Subjects:
Online Access: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
id ftawi:oai:epic.awi.de:41239
record_format openpolar
spelling ftawi:oai:epic.awi.de:41239 2023-05-15T14:27:06+02:00 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 2021-12-24T15:41:43Z 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 Arctic Ny Ålesund Ny-Ålesund Svalbard Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Ny-Ålesund Svalbard Theoretical and Applied Climatology 130 1-2 1 17
institution Open Polar
collection 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
geographic Arctic
Ny-Ålesund
Svalbard
geographic_facet Arctic
Ny-Ålesund
Svalbard
genre Arctic
Arctic
Ny Ålesund
Ny-Ålesund
Svalbard
genre_facet Arctic
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_ 1766300682483138560